01920nas a2200229   4500008004100000022001400041245008800055210006900143260007300212300001200285490000800297520112800305653003001433653000901463653000901472653002501481653000801506100002501514700002001539700001901559856011201578       2005                        eng d  a0169-433200aDeposition of PTFE thin films by RF plasma sputtering on < 100 > silicon substrates0 aDeposition of PTFE thin films by RF plasma sputtering on 100 sil  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a202-2070 v2453 a<p>Polymers have been studied extensively due to the wonderful array of properties presented by them. Polymer materials can be coated/deposited by various techniques like sputtering (magnetron, ion beam, RF or dc), plasma polymerization, etc. and can be used in coatings, paint industries, etc. The present study deals with the RF sputter deposition of poly(tetrafluoro ethylene) (PTFE), commonly known as Teflon. Depositions were carried out on mirror polished silicon (1 0 0) substrates at different powers in the range of 100-200 W. The deposition time was kept constant at 60 min. The sputtered film shows lower contact angle of 50&amp;DEG; with water and 44&amp;DEG; with diiodomethane, a lower interfacial tension value of 0.76 dyne/cm, indicating hydrophilicity and good adhesion of the film with the substrate. FHR indicates presence of C-F, C-F-2 bonding groups in the deposited film. Further, XPS study shows presence of CF3 (292.2 eV), CF2 (290.8 eV), C-F (288.0 eV) and C-CF (286.4 eV) moieties indicating deposition of PTFE films at higher power levels of plasma. © 2004 Elsevier B.V. All rights reserved.</p>10aContact angle measurement10aFTIR10aPTFE10aRF plasma sputtering10aXPS1 aBodas, Dhananjay, S.1 aMandale, A., B.1 aGangal, S., A.  uhttps://library.ncl.res.in/content/deposition-ptfe-thin-films-rf-plasma-sputtering-100-silicon-substrates-002702nas a2200337   4500008004100000022001400041245012800055210006900183260007300252300001200325490000700337520156900344653003201913653002601945653001601971653001701987653001402004653001302018653001702031653002302048653001702071653003002088653002002118653000802138100001302146700001502159700001802174700001502192700003002207856012702237       2005                        eng d  a0926-337300aIn situ XPS investigations of Cu1-xNixZnAl-mixed metal oxide catalysts used in the oxidative steam reforming of bio-ethanol0 aIn situ XPS investigations of Cu1xNixZnAlmixed metal oxide catal  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcFEB  a287-2990 v553 a<p>A series of CuNiZnAl-multicomponent mixed metal oxide catalysts with various Cu/Ni ratios were prepared by the thermal decomposition of Cu1-xNixZnAl-hydrotalcite-like precursors and tested for oxidative steam reforming of bio-ethanol. Dehydrogenation of EtOH to CH3CHO is favored by Cu-rich catalyst. Introduction of Ni leads to C-C bond rupture and producing CO, CO2 and CH4. H-2 yield (selectivity) varied between 2.6-3.0 mol/mol of ethanol converted (50-55%) for all catalysts at 300 degreesC. The above catalysts were subjected to in situ XPS studies to understand the nature of active species involved in the catalytic reaction. Core level and valence band XPS as well as Auger electron spectroscopy revealed the existence of Cu2+, Ni2+ and Zn2+ ions on calcined materials. Upon in situ reduction at reactions temperatures, the Cu2+ was fully reduced to Cu-0. while Ni2+ and Zn2+ were partially reduced to Ni-0 and Zn-0, respectively. On reduction, the nature of ZnO on Cu-rich catalyst changes from crystalline to amorphous, relatively inert and highly stabilized electronically. Relative concentration of the Ni-0 and Zn-0 increases upon reduction with decreasing Cu-content. Valence band results demonstrated that the overlap between 3d bands of Cu and Ni was marginal on calcined materials, and no overlap due to metallic clusters formation after reduction. Nonetheless, the density of states at Fermi level increases dramatically for Ni-rich catalysts and likely this influences the product selectivity. (C) 2004 Elsevier B.V. All rights reserved.</p>10aauger electron spectroscopy10aAutothermal reforming10aBio-ethanol10acopper oxide10afuel cell10aHydrogen10ahydrotalcite10amixed metal oxides10anickel oxide10aoxidative steam reforming10aSteam reforming10aXPS1 aVelu, S.1 aSuzuki, K.1 aVijayaraj, M.1 aBarman, S.1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/situ-xps-investigations-cu1-xnixznal-mixed-metal-oxide-catalysts-used-oxidative-steam-002227nas a2200265   4500008004100000022001400041245014400055210006900199260009500268300001000363490000800373520126800381653001201649653001201661653002001673653001801693653001101711653001501722653002501737653000801762653000801770100002401778700003001802856012901832       2006                        eng d  a0021-951700aOn the ``Active spacer and stabilizer'' role of Zn in Cu1-xZnxFe2O4 in the selective mono-N-methylation of aniline: XPS and catalysis study0 aActive spacer and stabilizer role of Zn in Cu1xZnxFe2O4 in the s  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcJUL  a83-950 v2413 a<p>A systematic catalytic methylation study on ferrospinel materials led to the selective production of N-methylaniline (NMA) with Cu1-xZnxFe2O4. Aniline methylation was carried out on Cu1-xZnxFe2O4 with a feed composition of CH3OH:PhNH2:H2O = 3:1:1 at 513-633 K. NMA was formed selectively on all of the catalyst compositions, with trace amounts of secondary products under most of the conditions. Cu0.5Zn0.5Fe2O4 composition showed high catalytic activity and stability up to 100 h. Although the Cu2+ was responsible for methylation activity, Zn2+ enhanced the overall stability of the catalyst system. XPS investigations revealed that the degree of Cu2+ reduction decreased dramatically from x = 0.05/0.25 to 0.5/0.75 on spent catalysts. TPR studies indicated that the reducibility of Cu2+ decreased from fully reducible at 523 K with Cu-rich compositions to partially reducible at 573 K on x = 0.5. Stable activity observed on Cu0.5Zn0.5Fe2O4 can be attributed to the highly heterogeneous distribution of metal ions. This heterogeneous distribution indicates an important role of zinc, likely as an ``active spacer cum stabilizee' that hinders the reduction of active Cu2+ and contributes to prolonged activity. (c) 2006 Elsevier Inc. All rights reserved.</p>10aAniline10aFerrite10aN-methylaniline10aN-methylation10aspacer10astabilizer10asurface distribution10aTPR10aXPS1 aVijayaraj, Munusamy1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/active-spacer-and-stabilizer-role-zn-cu1-xznxfe2o4-selective-mono-n-methylation-aniline-102690nas a2200313   4500008004100000022001400041245011600055210006900171260009500240300001200335490000800347520155000355653003601905653002801941653001101969653003001980653002002010653001802030653000802048100001902056700001702075700001702092700003502109700002702144700003002171700001902201700002602220856013002246       2006                        eng d  a0021-951700aEffect of spacer groups on the performance of MCM-41-supported platinum cluster-derived hydrogenation catalysts0 aEffect of spacer groups on the performance of MCM41supported pla  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcSEP  a332-3390 v2423 a<p>MCM-41 was functionalized with (EtO)(3)SiCH2Cl, (MeO)(3)SiCH2CH2CH2Cl, and (CH3)Cl2SiCH2Cl. The functionalized materials were characterized by solid-state NMR (CPMAS, Si-29 and C-13) and XPS. The NMR data indicate that three new silicon environments were created by(EtO)(3)SiCH2Cl and (MeO)(3)SiCH2CH2CH2Cl, whereas with (CH3)Cl2SiCH2Cl, two new silicon environments were obtained. XPS results from Si 2p core level and the valence band from the material functionalized by (MeO)(3)Si(CH2)(3)Cl was found to be the same as that of the corresponding fresh catalyst (1a), in contrast to that of the materials functionalized by the other two silane reagents. After further functionalization with triethylamine, these materials were used as inorganic anion exchangers to support the cluster anion [Pt-12(CO)(24)](2-). Solid-state NMR (29Si, C-13, N-15) was used to establish the presence of the quaternary ammonium group in the cluster-supported species. Analogous materials were also created using fumed silica as the support, and all of the cluster-supported materials were tested as catalysts for the hydrogenation of methyl pyruvate, acetophenone, nitrobenzene, benzonitrile, ethylacetoacetate, 4-nitrotoluene, cyclohexanone, allyl alcohol, and styrene. The best activity was obtained for the catalyst that had MCM-41 as the support and chloropropyl as the spacer group. TEM showed that the supports and the spacer groups had observable effects on the platinum crystallite size of the catalysts. (c) 2006 Elsevier Inc. All rights reserved.</p>10afunctionalized inorganic oxides10ahydrogenation catalysts10aMCM-4110aplatinum carbonyl cluster10aSolid-state NMR10aspacer groups10aXPS1 aMaity, Niladri1 aBasu, Susmit1 aMapa, Maitri1 aRajamohanan, Pattuparambil, R.1 aGanapathy, Subramanian1 aGopinath, Chinnakonda, S.1 aBhaduri, Sumit1 aLahiri, Goutam, Kumar  uhttps://library.ncl.res.in/content/effect-spacer-groups-performance-mcm-41-supported-platinum-cluster-derived-hydrogenation-101771nas a2200253   4500008004100000022001400041245009900055210006900154260007300223300001400296490000700310520087300317653003001190653000901220653001301229653002501242653000801267100002201275700002501297700002001322700001901342700002601361856013001387       2006                        eng d  a0167-577X00aElectron beam induced surface cross-linking of functional monomers coated on silicon substrate0 aElectron beam induced surface crosslinking of functional monomer  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a1360-13650 v603 a<p>A 3: 1 composition of functional monomer: multifunctional acrylate was spin coated and later cross-linked under the influence of keV electron irradiation on the surface of silicon to generate a surface-anchored cross-linked network bearing functional moieties. Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM) as well as wetting angle measurements were used for the analysis of functional monomer cross-linked surfaces. Results of the surface reconstruction of surfaces and electron irradiated on coated silicon wafers reveal that long-term hydrophilic surfaces can be achieved. Thus, the surface architecture can be favorably manipulated by using this remarkable technique with a Suitable combination of functional monomers and cross-linkers. (c) 2005 Elsevier B.V. All rights reserved.</p>10aelectron beam irradiation10aFTIR10aPolymers10asurface modification10aXPS1 aMahapatra, S., K.1 aBodas, Dhananjay, S.1 aMandale, A., B.1 aGangal, S., A.1 aBhoraskar, Vasant, N.  uhttps://library.ncl.res.in/content/electron-beam-induced-surface-cross-linking-functional-monomers-coated-silicon-substrate-002409nas a2200289   4500008004100000022001400041245009300055210006900148260009200217300001200309490000800321520145200329653001801781653001501799653000801814653000901822653001401831653000801845653001601853653000801869100003001877700002001907700002201927700002001949700002601969856012401995       2006                        eng d  a1042-015000aIrradiation effects of 12 eV oxygen ions on polyimide and fluorinated ethylene propylene0 aIrradiation effects of 12 eV oxygen ions on polyimide and fluori  a4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDbTAYLOR & FRANCIS LTDcAUG  a495-5040 v1613 a<p>Polyimide (PI) and Fluorinated Ethylene Propylene (FEP) samples (15mm x 15mm x 50 mu m ) were exposed to atomic oxygen ions of average energy similar to 12 eV and flux similar to 5x10(13) ions cm(-2) s(-1) , produced in the Electron Cyclotron Resonance (ECR) plasma. The energy and the flux of the oxygen ions at different positions in the plasma were measured by a retarding field analyzer. The fluence of the oxygen ions was varied from sample to sample in the range of similar to 5x10(16) to 2x10(17) ions cm(-2) by changing the irradiation period. The pre- and the post-irradiated samples were characterized by the weight loss, Scanning Electron Microscopy (SEM), X-ray Photoelectron Spectroscopy (XPS), and Fourier Transform Infrared (FTIR) techniques. The weight of the PI and FEP samples decreased with increasing the ion fluence. However, the erosion yield for the PI is found to be higher, by almost a factor five, when compared with that of FEP. On the surface region of irradiated samples, the concentrations of the carbon, fluorine, and oxygen and their corresponding chemical bonds have changed appreciably. Moreover, blisters and nanoglobules were also observed even at a fluence of similar to 10(17) ions cm(-2) . This oxygen ion fluence is almost two orders of magnitude lower than that of the 5 eV atomic oxygen, which a satellite encounters in the space, at the low Earth orbit, during its mission period of about 7 years.</p>10aatomic oxygen10aECR plasma10aFEP10aFTIR10aPolyimide10aSEM10aweight loss10aXPS1 aMajeed, Riyadh, M A Abdul1 aPurohit, V., S.1 aBhoraskar, S., V.1 aMandale, A., B.1 aBhoraskar, Vasant, N.  uhttps://library.ncl.res.in/content/irradiation-effects-12-ev-oxygen-ions-polyimide-and-fluorinated-ethylene-propylene-001611nas a2200289   4500008004100000022001400041245012700055210006900182260010600251300001400357490000700371520056300378653002200941653003200963653001400995653002701009653000801036100002201044700002001066700002401086700001701110700001901127700001801146700001601164700002201180856011901202       2006                        eng d  a1359-646200aPreparation of gamma-Fe2O3 nanoparticles using DC thermal arc-plasma route, their characterization and magnetic properties0 aPreparation of gammaFe2O3 nanoparticles using DC thermal arcplas  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAPR  a1235-12400 v543 a<p>gamma-Fe2O3 particles were prepared, for the first time, using a direct current thermal arc-plasma route. The powder was characterized using X-ray diffraction, Mossbauer spectroscopy, X-ray photoelectron spectroscopy, chemical analysis, vibrating sample magnetometry C and transmission electron microscopy. The high purity, stoichiometry and spherical morphology of the gamma-Fe2O3 particles (saturation magnetization = 79 emu g(-1) and coercivity = 348 Oe) were confirmed. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.</p>10achemical analysis10aDC thermal arc-plasma route10amaghemite10aMossbauer spectroscopy10aXPS1 aBanerjee, Indrani1 aKhollam, Y., B.1 aBalasubramanian, C.1 aPasricha, R.1 aBakare, P., P.1 aPatil, K., R.1 aDas, A., K.1 aBhoraskar, S., V.  uhttps://library.ncl.res.in/content/preparation-gamma-fe2o3-nanoparticles-using-dc-thermal-arc-plasma-route-their-001735nas a2200253   4500008004100000022001400041245010500055210006900160260007100229300001200300490000700312520087800319653002401197653001501221653001301236653001701249653002001266653000801286100001201294700001401306700001701320700001501337856012901352       2006                        eng d  a1520-610600aRole of halide ions and temperature on the morphology of biologically synthesized gold nanotriangles0 aRole of halide ions and temperature on the morphology of biologi  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJAN  a736-7410 v223 a<p>{In this paper, we demonstrate the effect of halide ions on the formation of biogenically prepared gold nanotriangles using the leaf extract of lemongrass (Cymbopogonflextiosus) plant. We have also studied the effect of halide ions on the morphology of biogenic nanotriangles. It has been shown that iodide ions have a greater propensity to transform flat gold nanotriangles into circular disklike structures as compared to other halide ions. The study also suggests that the presence of Cl- ions during the synthesis promotes the growth of nanotriangles, whereas the presence of I- ions distorts the nanotriangle morphology and induces the formation of aggregated spherical nanoparticles. The change in the morphology of gold nanotriangles has been explained in terms of the ability of the halide ions to stabilize or inhibit the formation of (I 11) faces to form [</p>10aDME steam reforming10afuel cells10aHydrogen10aMixed oxides10asupported Ga2O310aXPS1 aRai, A.1 aSingh, A.1 aAhmad, Absar1 aSastry, M.  uhttps://library.ncl.res.in/content/role-halide-ions-and-temperature-morphology-biologically-synthesized-gold-nanotriangles-102463nas a2200253   4500008004100000022001400041245009700055210006900152260009500221300001200316490000800328520157000336653002201906653002101928653001001949653001801959653000801977653001801985653002102003653000802024100002402032700003002056856012302086       2006                        eng d  a0021-951700aSelective production of methoxyphenols from dihydroxybenzenes on alkali metal ion-loaded MgO0 aSelective production of methoxyphenols from dihydroxybenzenes on  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcOCT  a376-3880 v2433 a<p>Selective O-methylation of dihydroxybenzenes (DHBs; catechol, resorcinol, and hydroquinone) to methoxyphenols (MPs) was carried out with dimethylcarbonate on MgO and alkali metal ion (Li, K, and Cs)-loaded MgO between 523 and 603 K. Catalytic activity and product selectivity varied with respect to DHB substrates. Selectivity for O-methylated products increased with increasing basicity of alkali ions; however, K-MgO showed high and stable activity toward MPs. Selectivity for MPs obtained from three substrates increased in the following order: catechol &lt; resorcinol &lt; hydroquinone. The mode of interaction of substrates on the catalysts surface influenced reactivity and product selectivity. It is likely that the low reaction temperatures used (&lt; 603 K) kinetically control and favor high MP selectivity from DHBs. Calcined and spent catalysts were characterized by XRD, surface area, SEM, thermal analysis, NMR, and XPS. XRD analysis revealed the formation of alkali oxide phases on alkali-loaded MgO. Crystallite size and surface area of the catalysts decreased after methylation reactions, except on K-MgO. TGA showed 4060 wt% coke deposition on spent catalysts. TGA in N-2 followed by air and C-13 CP-MAS NMR measurements indicated the nature of deposited carbon to be molecular species, graphite, MgCO3 and polyaromatics. XPS revealed the nature and availability of active sites on the spent catalysts, as well as the same changes with reaction conditions and correlated with catalytic activity. (c) 2006 Elsevier Inc. All rights reserved.</p>10aalkali-loaded MgO10adihydroxybenzene10aK-MgO10amethoxyphenol10aMgO10aO-methylation10athermal analysis10aXPS1 aVijayaraj, Munusamy1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/selective-production-methoxyphenols-dihydroxybenzenes-alkali-metal-ion-loaded-mgo-002004nas a2200217   4500008004100000022001400041245010200055210006900157260009800226300001200324490000700336520117300343653004001516653001701556653001101573653002301584653000801607100001901615700002501634856012701659       2006                        eng d  a0959-810300aSilica-supported bis(imino)pyridyl iron(II) catalyst: nature of the support-catalyst interactions0 aSilicasupported bisiminopyridyl ironII catalyst nature of the su  aTHE ATRIUM, SOUTHERN GATE, CHICHESTER PO19 8SQ, W SUSSEX, ENGLANDbJOHN WILEY & SONS LTDcAUG  a854-8610 v553 a<p>Ethylene polymerizations were performed using silica-supported 2,6-bis[1-(2,6-diisopropylphenylimino) ethyl] pyridine iron(II) dichloride with methylaluminoxane (MAO) as co-catalyst. Silica was calcined at 600, 400 and 200 degrees C under vacuum for 8 h. The effect of calcination temperature of silica on the polymerization activity and the properties of the polymers obtained were examined. Catalyst-support interactions were examined by both a chemical method and XPS. It was observed that upon supporting the catalyst on the surface of silica, there is an increase in the binding energy of the metal center. However, no change in the metal binding energy was observed on supporting the catalyst to silica calcined at different temperatures. Ethylene polymerizations were performed using MAO as co-catalyst. Catalysts were also prepared by first pretreating silica with NIAO, followed by addition of the Fe(II) catalyst and contacting a complex of Fe(II) catalyst-MAO with silica previously calcined at 400 degrees C for 8 h. The results indicate that there is no chemical bonding between the support and the catalyst. (C). 2006 Society of Chemical Industry.</p>10abis(imino) pyridyl iron(II) complex10aPolyethylene10asilica10asupported catalyst10aXPS1 aRay, Saptarshi1 aSivaram, Swaminathan  uhttps://library.ncl.res.in/content/silica-supported-bisiminopyridyl-ironii-catalyst-nature-support-catalyst-interactions-101738nas a2200277   4500008004100000022001400041245009300055210006900148260007300217300001400290490000600304520087800310653000801188653001001196653001101206653000801217653001201225653001101237653001901248653001101267653000801278653000801286100002001294700001901314856012701333       2006                        eng d  a1566-736700aSynthesis and characterization of TAPO-31 molecular sieves using tripropylamine template0 aSynthesis and characterization of TAPO31 molecular sieves using   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC  a1015-10210 v73 a<p>TAPO-31 was synthesized hydrothermally using a novel template tri-n-propylamine for the first time. C and N analysis shows the butanol from titanium tetrabutoxide plays an important role in the synthesis. The incorporation of titanium into framework of phosphorous and both aluminiurn and phosphorous sites was suggested from elemental analysis. Isomorphous substitution of titanium (III) in AlPO framework was confirmed from ESR and (31)p MASNMR spectra. UV-Vis and XPS spectra revealed a partial oxidation of framework titanium (III) into titanium (IV) in the calcined TAPO-31 and thus the presence of redox centers in the products. The higher titanium content (Al/Ti = 10) TAPO-31 sample shows higher activity for phenol hydroxylation compared to lower titanium content (Al/Ti = 20) and Titanium impregnated AIPO(4)-31. (c) 2006 Elsevier B.V. All rights reserved.</p>10aESR10aFT-IR10aMASNMR10aSEM10aTAPO-3110aTG/DTA10atripropylamine10aUV-Vis10aXPS10aXRD1 aVenkatathri, N.1 aShetty, V., N.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-tapo-31-molecular-sieves-using-tripropylamine-template-002023nas a2200277   4500008004100000022001400041245014800055210006900203260007300272300001000345490000800355520110600363653002301469653000801492653001001500653001201510653001601522653000801538653001101546653001101557653001201568653000801580653000801588100002001596856012901616       2006                        eng d  a0926-860X00aSynthesis, characterization and catalytic properties of vanadium aluminophosphate molecular sieves VAPO-31 and VAPSO-Amr from non-aqueous media0 aSynthesis characterization and catalytic properties of vanadium   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAUG  a31-390 v3103 a<p>Vanadium samples containing aluminophosphate molecular sieve (VAPO-31) and amorphous vanadium silicoaluminophosphate (VAPSO-Amr) have been synthesized using hexamethyleneimine template from non-aqueous media for the first time. XRD and SEM analyses confirm the phase purity of the synthesized samples. FT-IR analysis suggests the incorporation of V4+ in the aluminophosphate framework. ESR, UV-vis spectroscopic, and XPS techniques and cyclicvoltametric studies confirm the incorporation of vanadium and reveal its presence in tetrahedral and square pyramidal environments in the as-synthesized samples. Cyclic voltammetry reveals the presence of two redox couples in VAPO-31. This catalyst is found to be a good oxidation catalyst. Although most of the properties of VAPO-31NA and VAPSO-Amr are similar, the latter can access more vanadium and V4+ ions. Compared to aqueous media samples, it can incorporate more vanadium especially V5+, ions and has been found to be better oxidation catalyst. The physicochemical properties also change with media. (C) 2006 Elsevier B.V. All rights reserved.</p>10acyclic voltammetry10aESR10aFT-IR10aMAS NMR10anon-aqueous10aSEM10aTG/DTA10aUV-Vis10aVAPO-3110aXPS10aXRD1 aVenkatathri, N.  uhttps://library.ncl.res.in/content/synthesis-characterization-and-catalytic-properties-vanadium-aluminophosphate-molecular-000850nas a2200241   4500008004100000022001400041245008700055210006900142260009500211300001200306490000800318653002900326653000900355653001000364653003000374653001100404653000800415100002200423700001500445700001900460700001900479856011000498       2007                        eng d  a0021-979700aInterfacial deposition of Ag on Au seeds leading to AucoreAgshell in organic media0 aInterfacial deposition of Ag on Au seeds leading to AucoreAgshel  a525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USAbACADEMIC PRESS INC ELSEVIER SCIENCEcAUG  a498-5050 v31210acore-shell nanoparticles10aGold10aHRTEM10ainterfacial seeded growth10aSilver10aXPS1 aChandran, Prathap1 aGhatak, J.1 aSatyam, P., V.1 aSastry, Murall  uhttps://library.ncl.res.in/content/interfacial-deposition-ag-au-seeds-leading-aucoreagshell-organic-media02132nas a2200253   4500008004100000022001400041245017900055210006900234260007300303300001400376490000800390520117100398653000801569653001301577653001501590653001801605653002201623653000801645100002101653700002701674700002401701700002501725856012801750       2007                        eng d  a0927-775700aInvestigating organization of molecules that facilitates intermolecular acyl transfer in crystals: reactivity and x-ray structures of O-benzoyl-myo-inositol 1,3,5-orthoesters0 aInvestigating organization of molecules that facilitates intermo  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcFEB  a1153-11590 v2933 a<p>{Crystal structure analysis of racemic 2,6-di-O-benzoyl-myo-inositol 1,3,5-orthobenzoate reveals helical organization of the molecules, remarkably similar to that observed earlier in crystals of racemic 2,6-di-O-benzoyl-myo-inositol 1,3,5-orthoformate. Both these dibenzoates are isostructural despite the bulkier phenyl substituent in place of hydrogen. The latter compound shows highly facile intermolecular benzoyl transfer reactivity in its crystals and as anticipated from the crystal structure, the orthobenzoate indeed exhibits facile benzoyl transfer reactivity in its crystals. 2-O-Benzoyl-myo-inositol 1,3,5-orthoformate and the corresponding orthobenzoate also undergo transesterification in their crystals, but the specificity of acyl transfer is very low, and the reaction yields a mixture of products. The parameters of helical molecular assembly that facilitates acyl transfer in crystals have been investigated. A comparison of the molecular assemblies and lattice interactions in crystals of all the four compounds with the observed reactivity patterns show that facile acyl transfer reaction is brought about by a modular ``reaction tunnel''</p>10aAOT10aCdS-Ag2S10acore-shell10aNanoparticles10aw/o microemulsion10aXPS1 aMurali, Chebrolu1 aShashidhar, Mysore, S.1 aGonnade, Rajesh, G.1 aBhadbhade, Mohan, M.  uhttps://library.ncl.res.in/content/investigating-organization-molecules-facilitates-intermolecular-acyl-transfer-crystals-001692nas a2200241   4500008004100000022001400041245017500055210006900230260010600299300001400405490000700419520072700426653002901153653000901182653001001191653003001201653001101231653000801242100002401250700003001274700002301304856012301327       2007                        eng d  a0957-416600aShort synthesis of (+)-harzialactone A and (R)-(+)-4-hexanolide via proline-catalyzed sequential alpha-aminooxylation and horner-wadsworth-emmons olefination of aldehydes0 aShort synthesis of harzialactone A and R4hexanolide via prolinec  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAUG  a1795-17980 v183 a<p>{In melts, ring polymers assume more compact conformations compared to linear chains with the same degree of polymerization N-r, i.e. R-r similar to N-r(nu) with nu approximate to 0.4, where R-r is the radius of gyration. Upon gradually substituting some of the ring polymers with linear chains, the ring molecules swell. In the limit of infinite dilution, their size scales as R-r similar to N-r(0.5). We present a scaling argument based on the blob model to capture this transition. Ring-linear blends are modeled as a semidilute solution of ring polymers in a theta-solvent consisting of linear chains. The model predicts that the size of the ring polymer remains unchanged up to the overlap concentration c(r)(*</p>10acore-shell nanoparticles10aGold10aHRTEM10ainterfacial seeded growth10aSilver10aXPS1 aKotkar, Shriram, P.1 aSuryavanshi, Gurunath, S.1 aSudalai, Arumugarn  uhttps://library.ncl.res.in/content/short-synthesis-harzialactone-and-r-4-hexanolide-proline-catalyzed-sequential-alpha01757nas a2200277   4500008004100000022001400041245006100055210006000116260009200176300001400268490000600282520086800288653002401156653001801180653000801198653000801206653000801214100002201222700001801244700002301262700002301285700002301308700003001331700002401361856009401385       2008                        eng d  a1533-488000aBacterial synthesis of copper/copper oxide nanoparticles0 aBacterial synthesis of coppercopper oxide nanoparticles  a26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USAbAMER SCIENTIFIC PUBLISHERScJUN  a3191-31960 v83 a<p>A bacterial mediated synthesis of copper/copper oxide nanoparticle composite is reported. A Gram-negative bacterium belonging to the genus Serratia was isolated from the midgut of Stibara sp., an insect of the Cerambycidae family of beetles found in the Northwestern Ghats of India. This is a unique bacterium that is quite specific for the synthesis of copper oxide nanoparticles as several other strains isolated from the same insect and common Indian mosquitoes did not result in nanoparticle formation. By following the reaction systematically, we could delineate that the nanoparticle formation occurs intracellularly. However, the process results in the killing of bacterial cells. Subsequently the nanoparticles leak out as the cell wall disintegrates. The nanoparticles formed are thoroughly characterized by UV-Vis, TEM, XRD, XPS and FTIR studies.</p>10abacterial synthesis10aNanoparticles10aTEM10aXPS10aXRD1 aHasan, Syed, Saif1 aSingh, Sanjay1 aParikh, Rasesh, Y.1 aDharne, Mahesh, S.1 aPatole, Milind, S.1 aPrasad, Bhagavatula L. V.1 aShouche, Yogesh, S.  uhttps://library.ncl.res.in/content/bacterial-synthesis-coppercopper-oxide-nanoparticles-002354nas a2200253   4500008004100000022001400041245012100055210006900176260009200245300001200337490000700349520144900356653000901805653001601814653001201830653002101842653000801863100002101871700002601892700002001918700001801938700001801956856012601974       2008                        eng d  a1478-643500aPhotocatalytic activity and characterization of sol-gel-derived Cr(III)-doped TiO(2)-coated active carbon composites0 aPhotocatalytic activity and characterization of solgelderived Cr  a4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDbTAYLOR & FRANCIS LTDcAPR  a767-7790 v883 a<p>Cr(III)-doped, TiO(2)-coated active carbon (Cr-TiO(2)/AC) were prepared by a sol-gel method. The effect of supports, including TiO(2) and active carbon (AC), on the molecular structure and photocatalytic activity of chromium oxide for complete decomposition of EDTA has been examined with respect to the content of Cr on the catalyst surface. The photocatalytic activity of the Cr-TiO(2)/AC composites was evaluated in the decomposition of EDTA solution under UV irradiation. The results indicate that Cr-TiO(2)/AC has a higher efficiency in decomposition of EDTA than TiO(2), TiO(2)/AC or active carbon. This was attributed to the different functions of active carbon and chromate species. (1) Nanosize TiO(2) particles on composites were not reunited, possible because active carbon retards transformation of anatase into rutile and decreases the crystallite size. (2) Production of high concentrations of organic compound near Cr-TiO(2). (3) Carbon in active carbon causes some of the TiO(2) to reduce to Ti(3+) ions, which prevents electron-hole pair recombination. (4) Formation of polychromate species, with a stronger redox capability, on the surface of TiO(2)/AC. It was found that the addition of Cr to TiO(2) sol could suppress the grain growth of TiO(2) crystals and increase the hydroxyl content on the surface of TiO(2)/AC. The photocatalytic efficiency and activity of the composites remained good, even after three cycles.</p>10aEDTA10aphotoactive10asol-gel10aTitanium dioxide10aXPS1 aGambhire, A., B.1 aLande, Machhindra, K.1 aMandale, A., B.1 aPatil, K., R.1 aArbad, B., R.  uhttps://library.ncl.res.in/content/photocatalytic-activity-and-characterization-sol-gel-derived-criii-doped-tio2-coated-001941nas a2200241   4500008004100000022001400041245008900055210006900144260007300213300001000286490000800296520113700304653001001441653001301451653002301464653000801487653000801495100002301503700002001526700001901546700001701565856011701582       2008                        eng d  a0926-860X00aReaction kinetics of liquid phase air oxidation of p-cresol to p-hydroxybenzaldehyde0 aReaction kinetics of liquid phase air oxidation of pcresol to ph  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a28-350 v3393 a<p>The kinetics of liquid phase oxidation of p-cresol to p-hydroxybenzaldehyde has been investigated using insoluble cobalt oxide (CO3O4) catalyst at oxygen partial pressures in the range 0.1-1.5 MPa, reaction temperatures 333-393 K, p-cresol concentrations 0.49-1.53 kmol/m(3) and catalyst loadings 0.38-3.03 kg/m(3). The effects of oxygen partial pressure, reaction temperature, p-cresol concentration and catalyst loading on the initial rate of reaction have been studied. The initial rate varied linearly with catalyst loading up to 1.5 kg/m(3) beyond which it was independent of the catalyst loading while first-order dependence was observed with variation in oxygen partial pressure. A rate expression has been proposed considering Langmuir-Hinshelwood (LH) type mechanism, based on the initial rate data. A batch reactor model was also developed based on the kinetics studied and the concentration time profile predicted by the model was in good agreement with the experimental data. The activation energy for the liquid phase oxidation of p-cresol was found to be 39.6 kJ/mol. (c) 2008 Elsevier B.V. All rights reserved.</p>10aCo3O410akinetics10ap-cresol oxidation10aXPS10aXRD1 aKshirsagar, V., S.1 aNadgeri, J., M.1 aTayade, P., R.1 aRode, C., V.  uhttps://library.ncl.res.in/content/reaction-kinetics-liquid-phase-air-oxidation-p-cresol-p-hydroxybenzaldehyde-002275nas a2200253   4500008004100000022001400041245013000055210006900185260006900254300001400323490000800337520136500345653002001710653002001730653000801750653002401758653002301782653001601805653000801821100002201829700002201851700001701873856013101890       2009                        eng d  a0379-677900aInfluence of dopant ions on properties of conducting polypyrrole and its electrocatalytic activity towards methanol oxidation0 aInfluence of dopant ions on properties of conducting polypyrrole  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcAUG  a1682-16880 v1593 a<p>The polypyrrole (PPy) films were deposited on vacuum metallized substrates by electro-oxidation of pyrrole monomer. These electrodes were then modified with a range of metal halides having different electronegativities. The modified polypyrrole electrodes were employed to investigate electrocatalytic activity towards methanol electrochemical oxidation by means of cyclic voltammetry in 0.1 M HClO(4) as supporting electrolyte. It was found that the electronegativity of the dopant ion incorporated in the PPy film governs the electrocatalytic activity towards methanol oxidation. Among different dopant anions used in the present work, the PPy doped with zirconium chloride gave the highest anodic current of 10 mA cm(-2) at the oxidation potential of methanol. Electrical property and the charge created due to doping in the polymers were measured using X-ray photoelectron spectroscopy (XPS) and Electron spin resonance spectroscopy (ESR). Electrocatalytic activity of the modified electrodes was correlated with various factors obtained from different polymer characterization experiments. The results were explained on the basis of the charge-transfer efficiency at the electrode I electrolyte interface, which was associated with the acceptor state created by the dopant in the semi-conducting polymer. (C) 2009 Elsevier B.V. All rights reserved.</p>10acharge transfer10aelectrocatalyst10aESR10aMetal halide dopant10aMethanol oxidation10apolypyrrole10aXPS1 aAdhikari, Arindam1 aRadhakrishnan, S.1 aPatil, Rahul  uhttps://library.ncl.res.in/content/influence-dopant-ions-properties-conducting-polypyrrole-and-its-electrocatalytic-activity-001257nas a2200253   4500008004100000022001400041245006000055210005900115260007500174300001200249490000700261520042900268653001600697653002700713653001300740653002600753653000800779100002600787700002100813700002500834700002100859700002900880856009400909       2009                        eng d  a1022-552800aLiquid phase oxidation of p-cresol over cobalt saponite0 aLiquid phase oxidation of pcresol over cobalt saponite  a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGER/PLENUM PUBLISHERScJUN  a784-7880 v523 a<p>Liquid phase oxidation of p-cresol was carried out over a Co-saponite catalyst in a temperature and pressure range of 333-393 K and 20-827 kPa, respectively in n-propanol. Co-saponites with varying cobalt content (5-30%) were prepared and screened among which 13% Co-saponite gave the highest conversion of 92% of p-cresol with 92% selectivity to p-hydroxybenzaldehyde without formation of any non-oxidation products.</p>10aCo-saponite10aLiquid phase oxidation10ap-Cresol10ap-Hydroxybenzaldehyde10aXPS1 aKshirsagar, Vikas, S.1 aGarade, Ajit, C.1 aPatil, Kashinath, R.1 aShirai, Masayuki1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/liquid-phase-oxidation-p-cresol-over-cobalt-saponite-001533nas a2200253   4500008004100000022001400041245008500055210006900140260009200209300001800301490000700319520064400326653001400970653001800984653000801002100002101010700002601031700002001057700002001077700001801097700002701115700001801142856011901160       2009                        eng d  a0950-083900aSynthesis and characterization of high-surface-area Ag2O-doped SnO2 nanomaterial0 aSynthesis and characterization of highsurfacearea Ag2Odoped SnO2  a4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDbTAYLOR & FRANCIS LTDcMAR  aPII 9092573590 v893 a<p>Nanosized tin dioxide-based powders containing silver and palladium oxides have been prepared by coprecipitation reaction. XRD, TEM, and XPS analysis were carried out for investigation of crystalline structure and surface morphology. The best reactive conditions were determined, such as the concentration of the reactants, pH value, surfactants, reaction temperature, and time. The material obtained is nanocrystalline, having a particle size in the range of 5.21-7.42 nm. Effect of doped-Ag2O on the crystal size of the nanoparticles and the influence of the presence of a second dopant (Pd) on the Ag2O/SnO2 matrix was discussed.</p>10aAg2O:SnO210aNanomaterials10aXPS1 aGambhire, A., B.1 aLande, Machhindra, K.1 aKalokhe, S., B.1 aShirsat, M., D.1 aPatil, K., R.1 aGholap, Ramkrishna, S.1 aArbad, B., R.  uhttps://library.ncl.res.in/content/synthesis-and-characterization-high-surface-area-ag2o-doped-sno2-nanomaterial-001813nas a2200241   4500008004100000022001400041245007500055210006900130260007300199300001200272490000800284520100300292653001901295653002201314653001501336653001601351653001301367653000801380100002401388700002501412700002501437856010901462       2010                        eng d  a0304-389400aEcofriendly synthesis and solar photocatalytic activity of S-doped ZnO0 aEcofriendly synthesis and solar photocatalytic activity of Sdope  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV  a315-3230 v1833 a<p>The S-doped ZnO was prepared by new ecofriendly method, which involves simple mechanochemical synthesis followed by thermal decomposition of bisthiourea zinc oxalate (BTZO) powders. The BTZO was characterized by FTIR and TG-DTA analysis while S-doped ZnO crystallite was characterized by XRD, XPS, SEM, EDXS, and photoluminescence (PL) spectra. X-ray diffraction data suggest the single phase wurtzite structure for S-doped ZnO and the incorporation of sulfur expand the lattice constants of ZnO. Room temperature PL spectra show more number of oxygen vacancies in S-doped ZnO as compare to that of pure ZnO. Photocatalytic activity of S-doped ZnO was checked by means of solar photocatalytic degradation (PCD) of resorcinol, using a batch photoreactor. The PCD efficiency of S-doped ZnO was found to be 2 times greater than that of pure ZnO. The inherent relationship between PL intensity and photocatalytic activity of S-doped ZnO was discussed. (C) 2010 Elsevier B.V. All rights reserved.</p>10aPhotocatalysis10aphotoluminescence10aResorcinol10aS-doped ZnO10aSunlight10aXPS1 aPatil, Ashokrao, B.1 aPatil, Kashinath, R.1 aPardeshi, Satish, K.  uhttps://library.ncl.res.in/content/ecofriendly-synthesis-and-solar-photocatalytic-activity-s-doped-zno-001979nas a2200265   4500008004100000022001400041245007500055210006900130260007300199300001000272490000700282520111500289653001401404653001901418653001001437653003001447653000801477653000801485100001901493700001801512700002801530700002501558700002101583856010901604       2010                        eng d  a0039-914000aHighly sensitive and fast responding CO sensor based on Co3O4 nanorods0 aHighly sensitive and fast responding CO sensor based on Co3O4 na  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a37-430 v813 a<p>Co3O4 nanorods (diameters similar to 6-8 nm and lengths similar to 20-30 nm) were synthesized for the first time through a simple co-precipitation/digestion method by calcination of cobalt hydroxyl carbonate in air and their CO gas sensing properties were investigated. The Co3O4 nanorods exhibited outstanding gas sensing characteristics such as, higher gas response (similar to 6.55-50 ppm CO gas at 250 degrees C), extremely rapid response (similar to 3-4s), fast recovery (similar to 5-6s), excellent repeatability, good selectivity and lower operating temperature (similar to 250 degrees C). Furthermore, the Co3O4 nanorods are able to detect up to 5 ppm for CO with reasonable sensitivity (similar to 3.32) at an operating temperature 250 degrees C and they can be reliably used to monitor the concentration of CO over the range (5-50 ppm). The experimental results clearly demonstrate the potential of using the Co3O4 nanorods as sensing material in the fabrication of CO sensors. Plausible CO sensing mechanism of the Co3O4 nanorods is also discussed. (C) 2009 Elsevier B.V. All rights reserved.</p>10aCO sensor10aCo3O4 nanorods10aHRTEM10aSemiconductor gas sensors10aXPS10aXRD1 aPatil, Dewyani1 aPatil, Pradip1 aSubramanian, Vijayanand1 aJoy, Pattayil, Alias1 aPotdar, Hari, S.  uhttps://library.ncl.res.in/content/highly-sensitive-and-fast-responding-co-sensor-based-co3o4-nanorods-001477nas a2200217   4500008004100000022001400041245008700055210006900142260007300211300001400284490000800298520073400306653001101040653000801051653001301059653000801072100001801080700002501098700001801123856011801141       2010                        eng d  a0169-433200aInvestigations of CdS and Ag-CdS nanoparticles by X-ray photoelectron spectroscopy0 aInvestigations of CdS and AgCdS nanoparticles by Xray photoelect  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC  a1390-13940 v2573 a<p>In the present report, CdS and Ag-CdS nanoparticles were synthesized using cysteine as a capping agent. Surface properties CdS and Ag-CdS nanoparticles were studied by X-ray photoelectron spectroscopy (XPS). XPS study of CdS nanoparticles was carried out as a function of pH and for a refluxed sample at pH 11.2. Effect of dopant concentration on surface properties of Ag-CdS nanoparticles was also studied for as prepared samples as well as for annealed sample at 2% doping. Effect of pH, dopant concentration, and effect of particle size on different sulfur species present in the system was studied. Features of Cd 3d, S 2p and Ag 3d core level have been discussed in detail. (C) 2010 Elsevier B.V. All rights reserved.</p>10aAg-CdS10aCdS10aCysteine10aXPS1 aThakur, Priya1 aJoshi, Satyawati, S.1 aPatil, K., R.  uhttps://library.ncl.res.in/content/investigations-cds-and-ag-cds-nanoparticles-x-ray-photoelectron-spectroscopy-001805nas a2200265   4500008004100000022001400041245010700055210006900162260007300231300001000304490000800314520089400322653002901216653000901245653001501254653001701269653000801286100001501294700001601309700001901325700002801344700002301372700002501395856011901420       2010                        eng d  a1381-116900aNO reduction under diesel exhaust conditions over Au/Al2O3 prepared by deposition-precipitation method0 aNO reduction under diesel exhaust conditions over AuAl2O3 prepar  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a90-970 v3223 a<p>Gold supported on alumina was prepared by urea deposition-precipitation method and compared to silver supported on alumina for the selective catalytic reduction of NO by hydrocarbons under lean conditions. The catalyst showed activity in the reduction of NO and 100% selectivity towards N-2 in the temperature range 300-350 degrees C. At higher temperature the NO conversion decreased due to competitive oxidative reactions of the reductants. XPS analysis confirmed the good stability of gold nanoparticles deposited on alumina. Infrared studies showed the formation of various adsorbed species (formates, carboxylates, ad-NOx and cyanide) on the catalyst surface. Addition of H-2 to the feed containing decane enhanced the formation of these species on the catalyst surface as well as the catalytic activity for the NO conversion to N-2. (C) 2010 Elsevier B.V. All rights reserved.</p>10aDeposition-precipitation10aGold10aIn situ IR10aNO reduction10aXPS1 aMiguel, P.1 aGranger, P.1 aJagtap, Neelam1 aUmbarkar, Shubhangi, B.1 aDongare, Mohan, K.1 aDujardin, Christophe  uhttps://library.ncl.res.in/content/no-reduction-under-diesel-exhaust-conditions-over-aual2o3-prepared-deposition-001572nas a2200229   4500008004100000022001400041245012400055210006900179260007300248300001200321490000800333520073000341653001801071653002701089653002601116653001101142653000801153100002201161700001801183700001801201856012301219       2011                        eng d  a1387-181100aCharacterization of surface acid sites in tin-silicalite-1 (Sn-MFI) molecular sieve by X-ray photoelectron spectroscopy0 aCharacterization of surface acid sites in tinsilicalite1 SnMFI m  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a236-2400 v1413 a<p>The nature, strength and density of surface acid sites in Sn-MFI molecular sieves with different Sn-content were characterized by N 1s high resolution photoelectron peak of chemisorbed pyridine in combination with pyridine-IR and TPAD. Two peaks emerged at 399.5 +/- 0.2 and 401.5 +/- 0.2 eV by deconvoluting composite N is peak were assigned to chemisorbed pyridine on weak and relatively strong Lewis acid sites, respectively. The relative percentage of strong Lewis acid sites was found to increase with the decrease of framework Sn content. A close agreement was observed between the ratios of weak Lewis acid sites to strong Lewis acid sites obtained from XPS and TPAD. (C) 2010 Elsevier Inc. All rights reserved.</p>10aLewis acidity10aPyridine chemisorption10aSiO2/SnO2 molar ratio10aSn-MFI10aXPS1 aNiphadkar, P., S.1 aPatil, K., R.1 aJoshi, P., N.  uhttps://library.ncl.res.in/content/characterization-surface-acid-sites-tin-silicalite-1-sn-mfi-molecular-sieve-x-ray-002396nas a2200253   4500008004100000022001400041245007600055210006900131260006900200300001200269490000800281520158200289653002501871653001001896653001501906653003001921653000801951653000801959653000801967100001901975700002001994700001802014856011002032       2011                        eng d  a0925-400500aHighly sensitive and selective LPG sensor based on alpha-Fe2O3 nanorods0 aHighly sensitive and selective LPG sensor based on alphaFe2O3 na  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcMAR  a299-3060 v1523 a<p>The alpha-Fe2O3 nanorods were successfully synthesized without any templates by calcining the alpha-FeOOH precursor in air at 300 degrees C for 2 h and their LPG sensing characteristics were investigated. The alpha-FeOOH precursor was prepared through a simple and low cost wet chemical route at low temperature (40 degrees C) using FeSO4 center dot 7H(2)O and CH3COONa as starting materials. The formation of alpha-FeOOH precursor and its topotactic transformation to alpha-Fe2O3 upon calcination was confirmed by X-ray diffraction measurement (XRD). X-ray photoelectron spectroscopy (XPS), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM) analysis. The alpha-Fe2O3 nanorods exhibited outstanding gas sensing characteristics such as, higher gas response (similar to 1746-50 ppm LPG at 300 degrees C), extremely rapid response (similar to 3-4 s), relatively slow recovery (similar to 8-9 min), excellent repeatability, good selectivity and lower operating temperature (similar to 300 degrees C). Furthermore, the alpha-Fe2O3 nanorods are able to detect up to 5 ppm for LPG with reasonable response (similar to 15) at the operating temperature of 300 degrees C and they can be reliably used to monitor the concentration of LPG over the range (5-60 ppm). The experimental results clearly demonstrate the potential of using the alpha-Fe2O3 nanorods as sensing material in the fabrication of LPG sensors. Plausible LP G sensing mechanism of the alpha-Fe2O3 nanorods is also discussed. (C) 2010 Elsevier B.V. All rights reserved.</p>10aalpha-Fe2O3 nanorods10aFESEM10aLPG sensor10aSemiconductor gas sensors10aTEM10aXPS10aXRD1 aPatil, Dewyani1 aPatil, Virendra1 aPatil, Pradip  uhttps://library.ncl.res.in/content/highly-sensitive-and-selective-lpg-sensor-based-alpha-fe2o3-nanorods-002164nas a2200253   4500008004100000022001400041245005900055210005900114260006900173300001200242490000800254520136200262653001001624653001501634653002701649653003001676653000801706100002801714700002501742700002101767700001901788700001801807856008501825       2011                        eng d  a0925-400500aNanostructured spinet ZnCo2O4 for the detection of LPG0 aNanostructured spinet ZnCo2O4 for the detection of LPG  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcFEB  a121-1290 v1523 a<p>Nanostrucutred spinel ZnCo2O4 (similar to 26-30 nm) was synthesized by calcining the mixed precursor (consisting of cobalt hydroxyl carbonate and zinc hydroxyl carbonate) in air at 600 degrees C for 5 h. The mixed precursor was prepared through a low cost and simple co-precipitation/digestion method. The transformation of the mixed precursor into nanostructured spinel ZnCO2O4 upon calcinations was confirmed by X-ray diffraction (XRD) measurement, thermogravimetric analysis (TGA), X-ray photoelectron spectroscopy (XPS) and high resolution transmission electron microscopy (HRTEM). To demonstrate the potential applicability of ZnCo2O4 spinel in the fabrication of gas sensors, its LPG sensing characteristics were systematically investigated. The ZnCo2O4 spinel exhibited outstanding gas sensing characteristics such as, higher gas response (similar to 72-50 ppm LPG gas at 350 degrees C), response time (similar to 85-90 s), recovery time (similar to 75-80 s), excellent repeatability, good selectivity and relatively lower operating temperature (similar to 350 degrees C). The experimental results demonstrated that the nanostructured spinel ZnCo2O4 is a very promising material for the fabrication of LPG sensors with good sensing characteristics. Plausible LPG sensing mechanism is also discussed. (c) 2010 Elsevier B.V. All rights reserved.</p>10aHRTEM10aLPG sensor10aNanostructured ZnCo2O410aSemiconductor gas sensors10aXPS1 aVijayanand, Subramanian1 aJoy, Pattayil, Alias1 aPotdar, Hari, S.1 aPatil, Dewyani1 aPatil, Pradip  uhttps://library.ncl.res.in/content/nanostructured-spinet-znco2o4-detection-lpg-001941nas a2200217   4500008004100000022001400041245005400055210005300109260009900162300001400261490000700275520123500282653001101517653002301528653001401551653000801565100002501573700001901598700001801617856008801635       2012                        eng d  a0272-884200aSurface characterization of Au-ZnO nanowire films0 aSurface characterization of AuZnO nanowire films  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLANDbELSEVIER SCI LTDcDEC  a6665-66700 v383 a<p>Au-ZnO nanowire films have been synthesized by annealing Zn foils coated with a thin layer of gold. An X-ray diffraction study found that the synthesized ZnO consists mainly of a hexagonal wurtzite structure along with a small amount of AuZn3 phase. Scanning electron images showed that the ZnO wires extend to several microns in length. X-ray photoelectron spectroscopy studies confirmed the oxidation states of Au and Zn. An asymmetric O ls peak indicates the presence of oxygen in an oxide layer and O H groups on the films surfaces. Photoluminescence (PL) spectra showed different visible peaks for pre-annealed films, while for annealed films an UV peak appeared. In addition, the PL analysis showed that the overall intensity of photoluminescence decreased significantly after the films were annealed. Raman spectroscopy results also indicated that the crystalline quality of the films improved with annealing. This could be attributed to a decrease in oxygen vacancies and/or absorption of O-H groups on the surface of ZnO film. The highly hydrophilic surface with a water contact angle of similar to 155 degrees was obtained after annealing in air. (c) 2012 Elsevier Ltd and Techna Group S.r.l. All rights reserved.</p>10aAu-ZnO10aHighly hydrophilic10aNanowires10aXPS1 aJamali-Sheini, Farid1 aYousefi, Ramin1 aPatil, K., R.  uhttps://library.ncl.res.in/content/surface-characterization-au-zno-nanowire-films-001674nas a2200253   4500008004100000022001400041245012900055210006900184260005700253300001200310490000800322520076900330653001301099653001701112653002401129653001201153653001801165653002201183653000801205100002101213700002501234700002901259856013201288       2012                        eng d  a1011-372X00aSurface species of supported ruthenium catalysts in selective hydrogenation of levulinic esters for bio-refinery application0 aSurface species of supported ruthenium catalysts in selective hy  a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGERcJUN  a779-7870 v1423 a<p>Several supported noble metal catalysts were screened for the hydrogenation of methyl levulinate to gamma-valerolactone (GVL). Among these catalysts 5 % Ru/C showed the highest conversion of 95 % of methyl levulinate with 91 % selectivity to GVL. A detailed characterization was carried out using TPR, XRD, XPS and BET techniques. XPS studies revealed that higher extent of Ru-0 species in case of carbon supported Ru was responsible for its higher hydrogenation activity as compared to Ru on other supports. Effect of process parameters such as temperature, H-2 pressure, catalyst and substrate concentration and metal loading on methyl LA conversion and selectivity to GVL also has been studied. 5 % Ru/C catalyst was found to be stable up to five reuses.</p>10a5 % Ru/C10aBiofeedstock10agamma-Valerolactone10aH-2-TPR10aHydrogenation10aMethyl levulinate10aXPS1 aHengne, Amol, M.1 aBiradar, Narayan, S.1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/surface-species-supported-ruthenium-catalysts-selective-hydrogenation-levulinic-esters-bio-001682nas a2200265   4500008004100000022001400041245005900055210005900114260006900173300000800242490000800250520082700258653001901085653002501104653002801129653000801157100002401165700001701189700002401206700002401230700002601254700002401280700001901304856009301323       2013                        eng d  a1010-603000aGreen synthesis of silver nanoparticles using sunlight0 aGreen synthesis of silver nanoparticles using sunlight  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcAPR  a1-90 v2583 a<p>Silver nanoparticles (AgNPs) are currently among the most widely used man-made nanomaterials, present in a huge range of consumer products. Here we report a simple `green' method of AgNP synthesis of using an anionic surfactant without use of any additional reducing agents. It was observed that synthesis of AgNPs at room temperature (25-35 degrees C) using sodium dodecyl sulphate (SDS) and sunlight. The nanoparticles have been characterised using high-resolution transmission electron spectroscopy (HRTEM), UV-vis spectrophotometry, X-ray photoelectron spectroscopy (XPS) and Fourier Transform Infrared Spectroscopy (FTIR) and are found to have an average diameter of 30 nm. The nanoparticles are water soluble and the nature of the process is amenable to scaling up. (c) 2013 Elsevier B.V. All rights reserved.</p>10aphotochemistry10asilver nanoparticles10aSodium dodecyl sulphate10aXPS1 aBhaduri, Gaurav, A.1 aLittle, Ross1 aKhomane, Ramdas, B.1 aLokhande, Suhas, U.1 aKulkarni, Bhaskar, D.1 aMendis, Budhika, G.1 aSiller, Lidija  uhttps://library.ncl.res.in/content/green-synthesis-silver-nanoparticles-using-sunlight-001670nas a2200241   4500008004100000022001400041245010800055210006900163260007300232300001000305490000700315520079400322653001001116653002401126653002701150653002101177653002101198653000801219100002001227700002101247700002901268856013101297       2013                        eng d  a1566-736700aHeterogeneous Co3O4 catalyst for selective oxidation of aqueous veratryl alcohol using molecular oxygen0 aHeterogeneous Co3O4 catalyst for selective oxidation of aqueous   aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAR  a66-690 v333 a<p>Nano-structured, spinel Co3O4 catalyst was developed for the aqueous phase oxidation of veratryl alcohol, which showed the highest conversion of 85% with 96% selectivity to veratryl aldehyde. The co-existence of Co3+ and Co2+ species in the octahedral and tetrahedral positions respectively, was confirmed by XPS, cyclic voltammogram, TPR and TPO characterization. The rod-like morphology of Co3O4 catalyst was confirmed by HRTEM. The effects of various reaction parameters namely, catalyst concentration, temperature and partial oxygen pressure on conversion and selectivity patterns were also studied for the oxidation of veratryl alcohol. This catalyst also showed an excellent stability as evidenced by successful reusability for three times. (C) 2012 Published by Elsevier B.V.</p>10aCo3O410aCyclic voltammogram10aLiquid phase oxidation10aMolecular oxygen10aVeratryl alcohol10aXPS1 aMate, Vivek, R.1 aShirai, Masayuki1 aRode, Chandrashekhar, V.  uhttps://library.ncl.res.in/content/heterogeneous-co3o4-catalyst-selective-oxidation-aqueous-veratryl-alcohol-using-molecular-001371nas a2200217   4500008004100000022001400041245017200055210006900227260005700296300001400353490000800367520054200375653001100917653001700928653001300945653001700958653000800975100002600983700001801009856012601027       2014                        eng d  a1011-372X00aPt States in BaCe0.98Pt0.02O3-delta during start up and shut down operations under different conditions: stability and activity of ionic Pt in water gas shift reaction0 aPt States in BaCe098Pt002O3delta during start up and shut down o  a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGERcDEC  a2227-22320 v1443 a<p>Stability of Pt species in doped BaCeO3 perovskites under Water gas shift reaction conditions is studied using X-ray absorption spectroscopy and in situ powder X-ray diffraction. The catalyst BaCe0.98Pt0.02O3-delta has Pt in +2 oxidation state and is found to be stable in the ionic form under reaction conditions as well as under various highly reducing shut down and start up conditions. In-situ XRD under Water Gas shift reaction conditions also reveals the Pt ions to be highly stabilized in lattice and no egress is observed.</p>10aBaCeO310aDeactivation10aplatinum10aWGS reaction10aXPS1 aRajesh, Thattarathody1 aDevi, Nandini  uhttps://library.ncl.res.in/content/pt-states-bace098pt002o3-delta-during-start-and-shut-down-operations-under-different-002066nas a2200217   4500008004100000022001400041245012400055210006900179260007300248300001200321490000800333520125700341653001801598653001601616653002901632653000801661653000801669100002601677700001801703856012701721       2014                        eng d  a1381-116900aResistance to ionic pt insertion in oxygen excess LaMnO3 perovskite lattices and its effect in water gas shift reaction0 aResistance to ionic pt insertion in oxygen excess LaMnO3 perovsk  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcDEC  a534-5420 v3953 a<p>Pt doped and impregnated LaMnO3 perovskites are synthesized at different temperatures and Pt and Mn states are compared in an attempt to get insight into extent of lattice incorporation of Pt in perovskite. Various characterization studies indicate that oxygen excess system like LaMnO3 presents substantial resistance to B site doping with Pt. This behavior is different from other oxygen deficient perovskites like LaCoO3 and LaFeO3 in which lattice incorporation stabilizes the active species against sintering. Water gas shift reaction was used as a probe reaction to understand the effect of this difference in the activity. In case of LaMnO3, failure in lattice substitution leads to sintering and deactivation at high synthesis temperatures (&gt;= 700 degrees C) in both impregnated and doped samples. In doped samples, however, a strong interaction of Pt species with a persistent amorphous phase prevents sintering at lower synthesis temperature thereby enhancing the activity when compared to impregnated sample. The study reveals a possible mechanism in which only Pt(0) species is active with perovskite playing a minimal role in this system due to the resistance to lattice incorporation. (C) 2014 Elsevier B.V. All rights reserved.</p>10aOxygen excess10aPerovskites10aWater gas shift reaction10aXPS10aXRD1 aRajesh, Thattarathody1 aDevi, Nandini  uhttps://library.ncl.res.in/content/resistance-ionic-pt-insertion-oxygen-excess-lamno3-perovskite-lattices-and-its-effect-002041nas a2200253   4500008004100000022001400041245015600055210006900211260007300280300001000353490000800363520108600371653001901457653003501476653001801511653000801529653000801537100002901545700003201574700001801606700002201624700001801646856012301664       2016                        eng d  a1381-116900aPhotocatalytic H-2 evolution from water-methanol mixtures on InGaO3(ZnO)(m) with an anisotropic layered structure modified with CuO and NiO cocatalysts0 aPhotocatalytic H2 evolution from watermethanol mixtures on InGaO  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcMAY  a82-880 v4153 a<p>InGaO3(ZnO)(m) series of oxides is found to be active for photocatalytic H-2 evolution from water-methanol mixtures. The structure of this series is highly anisotropic with InO6 octahedral layers sandwiching Ga/ZnOn polyhedra. The structural anisotropy in which the conducting layer is spatially separated from the charge generation sites may help in suppressing charge recombination and consequently enhance catalytic activity. The band gaps of the series obtained from absorption spectra are above 3.6 eV and hence they are not active under visible light irradiation. H-2 evolution is considerably enhanced under UV light on employing NiO as cocatalyst due to facile electron transfer from InGaO3(ZnO)(m). to NiO. However, when CuO is used as cocatalyst, visible light activity could be brought out. Due to the very low band gap of CuO, it can act as a sensitizer absorbing in visible light. The band positions become conducive for H-2 evolution due to band alignments consequent to electron accumulation in CuO conduction band. (C) 2016 Elsevier B.V. All rights reserved.</p>10aInGaO3(ZnO)(m)10aphotocatalytic water splitting10avisible light10aXPS10aXRD1 aNarendranath, Soumya, B.1 aThekkeparambil, Saranya, V.1 aGeorge, Leena1 aThundiyil, Shibin1 aDevi, Nandini  uhttps://library.ncl.res.in/content/photocatalytic-h-2-evolution-water-methanol-mixtures-ingao3znom-anisotropic-layered01841nas a2200277   4500008004100000022001400041245006900055210006600124260000800190300001200198490000800210520104000218653001601258653001501274653001101289653001501300653000801315653000801323100002201331700002601353700001801379700002401397700001801421700002401439856010001463       2019                        eng d  a0925-838800aMWCNTs-ZnO-SiO2 mesoporous nano-hybrid materials for CO2 capture0 aMWCNTsZnOSiO2 mesoporous nanohybrid materials for CO2 capture  cSEP  a279-2850 v8003 a<p>Carbon nanostructures and metal nanoparticles based nanohybrid materials have been established as one of advantageous materials for various applications. Here, we present hydrothermal and sol-gel process at low temperature for the synthesis of (3-Aminopropyl) triethoxysilane (APTES)-ZnO-multi-walled carbon nanotubes (MWCNTs) mesoporous nanohybrid materials. TEM and XPS measurements show that uniform size and quasi-spherical ZnO nanoparticles were anchored to the surface of the MWCNTs. SEM observation exhibits that the aggregation of ZnO nanoparticles is greatly reduced due to the steric repulsion of grafted organic groups. The maximum CO2 adsorption capacity at 273 K was 1.32 mmol/g for MWCNTs-APTES-ZnO-B nanohybrid. An increase in the density of ZnO nanoparticles on the surface of MWCNTs resulted in a higher affinity towards CO2 at low pressure. This work provides new research directions for making further advances toward practical utilization of MWCNTs-based CO2 adsorbents. (C) 2019 Published by Elsevier B.V.</p>
10aCO2 capture10aMesoporous10aMWCNTs10aNanohybrid10aTEM10aXPS1 aJena, Kishore, K.1 aPanda, Amulya, Prasad1 aVerma, Savita1 aMani, Ganesh, Kumar1 aSwain, S., K.1 aAlhassan, Saeed, M.  uhttps://library.ncl.res.in/content/mwcnts-zno-sio2-mesoporous-nano-hybrid-materials-co2-capture02586nas a2200325   4500008004100000022001400041245011200055210006900167260000800236300001200244490000800256520159300264653002001857653001301877653001801890653000801908653000801916100001601924700002001940700001801960700002101978700002401999700001902023700001902042700001702061700002002078700001802098700002002116856012402136       2019                        eng d  a1862-630000aSolvothermal growth of PbBi2Se4 nano-flowers: a material for humidity sensor and photodetector applications0 aSolvothermal growth of PbBi2Se4 nanoflowers a material for humid  cJUN  a19000650 v2163 a<p>In the present work, lead bismuth selenide (PbBi2Se4) nano-flowers are synthesized by using a simple solvothermal method. Humidity sensor and photodetector based on PbBi2Se4 nano-flowers are fabricated on indium tin oxide (ITO) substrates and their sensing properties are investigated. Formation of PbBi2Se4 is confirmed by XRD, EDS, and XPS whereas formation of nano-flowers is confirmed by SEM and TEM analysis. XRD analysis reveals the hexagonal crystal structure of PbBi2Se4 phase with a = b = 4.22 angstrom, and c= 17.42 angstrom. The surface morphology of PbBi2Se4 clearly shows the formation of well-organized flower-like nanostructures which closely resembles the shape of Dahlia. The elemental mapping of chemical constituents obtained from SEM-EDS analysis shows uniform distribution of chemical constituents for the Pb, Bi, and Se in PbBi2Se4 nano-flowers. The PbBi2Se4 nano-flowers based humidity sensor has a typical response time of approximate to 65s and recovery time of approximate to 75 s. In case of PbBi2Se4 nano-flowers-based photodetector, the response and recovery time are observed approximate to 121 and approximate to 123 s, respectively, under visible light illumination with photoresponsivity (5 x 10(-6)), photosensitivity (2.16%), and quantum efficiency (1.5 x 10(4)). The obtained results demonstrate the potential applications of solvothermally grown PbBi2Se4 nano-flowers-based devices for humidity sensors and photodetectors. The ease of the present work is to develop novel material to obtain device quality humidity sensors and photodetectors.</p>
10ahumidity sensor10aPbBi2Se410aphotodetector10aXPS10aXRD1 aAher, Rahul1 aBhorde, Ajinkya1 aNair, Shruthi1 aBorate, Haribhau1 aPandharkar, Subhash1 aNaik, Dhirsing1 aVairale, Priti1 aKarpe, Smita1 aLate, Dattatray1 aPrasad, Mohit1 aJadkar, Sandesh  uhttps://library.ncl.res.in/content/solvothermal-growth-pbbi2se4-nano-flowers-material-humidity-sensor-and-photodetector02042nas a2200217   4500008004100000022001400041245012900055210006900184260000900253300001400262490000700276520126400283653002601547653002501573653002801598653001401626653000801640100001601648700003001664856013001694       2020                        eng d  a1867-388000aElectronic structure evolution of Pd@Co nanocatalysts under oxidation and reduction conditions and preferential CO oxidation0 aElectronic structure evolution of PdCo nanocatalysts under oxida  cAUG   a4176-41840 v123 a<p>Herein, we present the surface electronic structure and morphological evolution under reduction and oxidation conditions for Pd@Co (PC) core-shell nanoparticles with different Pd : Co ratio (PC=2 : 1, 1 : 1 and 1 : 2). Extensive measurements have been made with NAPXPS (near ambient pressure x-ray photoelectron spectroscopy) under oxidising and reducing conditions, and ex-situ HRTEM. It has been demonstrated that PC catalysts are thermally stable towards morphological changes, at least up to 575 K. Nonetheless, it shows a significant surface electronic structure changes under reaction environments, which are highly relevant to heterogeneous catalysis. As expected, high (low) population of metallic (oxidised) Co was observed, while retaining core shell structure under reduction (H(2)and vacuum annealing) environment. Interestingly, the Pd-Co metallic interface helps to overcome the pyrophoric nature of cobalt and stabilised a significant amount of metallic Co at Pd-Co interface even in the presence of 0.1 mbar O(2)up to 575 K. The presence of Pd-Co and Pd-Co@Co(3)O(4)interfaces in reaction environment makes the catalyst dual functional. The proof of concept has been explored in terms of oxidation of CO in the presence of H(2)or O-2.</p>
10aCore-Shell morphology10aElectronic Structure10aheterogeneous catalysis10ainterface10aXPS1 aJain, Ruchi1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/electronic-structure-evolution-pdco-nanocatalysts-under-oxidation-and-reduction-conditions01852nas a2200241   4500008004100000022001400041245009300055210006900148260000800217300001200225490000700237520110600244653001201350653001201362653001701374653001601391653000801407653000801415100002201423700002401445700002901469856011201498       2020                        eng d  a1002-072100aInfluence of cobalt on performance of Cu-CeO2 catalysts for preferential oxidation of CO0 aInfluence of cobalt on performance of CuCeO2 catalysts for prefe  cSEP  a941-9500 v383 a<p>{Copper and cobalt oxides supported on CeO2 were investigated for preferential oxidation of carbon monoxide (CO-PROX) in the presence of excess hydrogen and CO2. (CuO)(1-x)(Co3O4)(x/3)-(CeO2)(2.5) (x = 0, 0.25, 0.50, 0.75, 0.85 and 1) catalysts were prepared by coprecipitation method. These mixed oxide catalysts were characterized by several physicochemical techniques, such as BET surface area (SBET), X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), temperature programmed reduction (TPR) and X-ray photoelectron spectroscopy (XPS). XRD studies show the peaks related to CuO and Co3O4 phases in copper and cobalt containing CeO2 catalysts. The average particle size of the CeO2 crystallites is in the range of 8-10 nm as evaluated from HRTEM studies. XPS studies demonstrate that Cu, Co and Ce in (CuO)(1-x)(Co3O4)(x/3)-(CeO2)(2.5) catalysts are presented in +2 and +1, +3 and +2 and +4 and +3 oxidation states, respectively. The catalyst with x = 0.75 shows better activity and selectivity towards CO-PROX. Though the catalyst with only copper (CuO-CeO2</p>
10aCO-PROX10aCu-CeO210aH2O addition10aMethanation10aXPS10aXRD1 aMalwadkar, Sachin1 aBera, Parthasarathi1 aSatyanarayana, C., V. V.  uhttps://library.ncl.res.in/content/influence-cobalt-performance-cu-ceo2-catalysts-preferential-oxidation-co02118nas a2200265   4500008004100000022001400041245015500055210006900210260000800279300001600287490000700303520118800310653002201498653001601520653003401536653002401570653000801594100002701602700001801629700001801647700001901665700002101684700002501705856012201730       2020                        eng d  a0360-319900aStructural, electrochemical and catalytic activity of Prussian blue analogues embedded with functionalized carbon for solid state battery applications0 aStructural electrochemical and catalytic activity of Prussian bl  cMAY  a15317-153260 v453 a<p>The nanoparticles of Mn-1.5[Cr(CN)(6)]center dot mH(2)O@Ni-1.5[Cr(CN)(6)]center dot nH(2)O core-shell prussian blue analogues (PBA) embedded with carbon additives (PBA-C) were synthesized and characterized as electrode material for solid state battery application. The impedance spectroscopy and cyclic voltametry were used to study the electrochemical properties by adding functionalized carbon in 1:1 proportion to improve the electrical performance. The value of room temperature electrical conductivity of core-shell PBA and core-shell nanoparticles mixed with vulcan carbon (PBA-C) are found to be 1.574 x 10(-3) and 1.92 x 10(-3) Scm(-1), respectively. Using Li2La3Zr2O12 (LZZO) electrolyte, single cell was fabricated with PBA-C material, and studied its charging-discharging cycles, which exhibits higher current density with stable performance for 400 cycles for time slots of 400 min. The study reveals that the PBA core-shell nanoparticles mixed with carbon (PBA-C) may be a potential candidate as an electrode material in the form of a single cell using LZZO electrolyte. (C) 2020 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.</p>
10acyclic voltametry10aElectrolyte10aPrussian blue analogues (PBA)10aSolid state battery10aXPS1 aShaikh, Shabana, P. S.1 aBhatt, Pramod1 aYusuf, S., M.1 aBhange, S., N.1 aBansod, Sudhakar1 aAbdalla, Abdalla, M.  uhttps://library.ncl.res.in/content/structural-electrochemical-and-catalytic-activity-prussian-blue-analogues-embedded02447nas a2200277   4500008004100000022001400041245009600055210006900151260000900220300001100229490000800240520159300248653002101841653001701862653001501879653001901894653000801913653000801921100001701929700002101946700002101967700001901988700001702007700001902024856012602043       2025                        eng d  a0009-261400aSynergistic MoS2@MWCNT nanocomposites for high-efficiency catalysis and energy applications0 aSynergistic MoS2MWCNT nanocomposites for highefficiency catalysi  cNOV   a1424170 v8793 a<p>
	The MoS2-MWCNT composite heterojunction for its potential as an electrocatalyst and energy storage material. The composite demonstrated remarkable electrochemical performance, achieving a specific capacitance of 263 F/g, an energy density of 16.89 Wh/kg, and a power density of 478 W/kg. Using CV profiles, we analyzed the charge storage mechanism and found that the anodic and cathodic processes had b values of 0.48 and 0.45, respectively, indicating diffusion-controlled behavior. Diffusion coefficients of 6.44 x 10(-7) cm(2)/s (anodic) and 11.32 x 10(-7) cm(2)/s (cathodic) confirmed this mechanism. In the constructed device using MoS2-MWCNT and activated carbon (AC), we observed a specific capacitance of 18.71 F/g, an energy density of 5.09 Wh/kg, and a power density of 833 W/kg. After stability, testing, electrochemical impedance spectroscopy (EIS) revealed a slight increase in series resistance, rising from 2.33 Omega to 2.49 Omega. The MoS2-MWCNT composite also exhibited excellent electro catalytic performance. For the hydrogen evolution reaction (HER), it achieved an over potential of 0.221 V and a Tafel slope of 0.321 V/dec. After stability testing, we measured Rs and Rct values of 4.86 Omega and 2.57 Omega, respectively. For the oxygen evolution reaction (OER), the composite showed an over potential of 597 mV and a Tafel slope of 0.285 V/dec, with post-stability Rs and Rct values of 5.63 Omega and 5.57 Omega, respectively. These findings highlight the versatility of the MoS2-MWCNT composite for applications in energy storage and water splitting.</p>
10aelectrocatalysis10ahydrothermal10aMoS2-MWCNT10asupercapacitor10aTEM10aXPS1 aAuti, P., S.1 aKanawade, R., V.1 aAlshehri, S., A.1 aWarule, S., S.1 aShin, D., K.1 aYewale, M., A.  uhttps://library.ncl.res.in/content/synergistic-mos2mwcnt-nanocomposites-high-efficiency-catalysis-and-energy-applications