02649nas a2200193   4500008004100000022001400041245009900055210006900154260007100223300001600294490000800310520188000318100002502198700002502223700002302248700002202271700003002293856013202323       2007                        eng d  a1932-744700aSurface-state-mediated electron transfer at nanostructured ZnO multipod/electrolyte interfaces0 aSurfacestatemediated electron transfer at nanostructured ZnO mul  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcSEP  a13092-131020 v1113 a<p>Redox kinetics of cyanoferrate(III) species adsorbed at an n-type ZnO multipod/electrolyte interface is explored using electrochemical techniques like cyclic voltammetry and impedance spectroscopy. The electrochemical impedance results are analyzed using a fluctuating energy level model, assuming isoenergetic tunneling of majority carriers through the Helmholtz layer. A shift in the slope of Mott-Schottky plots (C-sc(-2) versus E) together with evidence from cyclic voltammetry shows that the electron-transfer process is mediated by surface states formed because of the adsorption of ferricyanide ions (as evident from the results of Fourier transform infrared spectroscopy). More significantly, the pH of zero charge (point of zero zeta potential, pzzp) of ZnO multipods is found to be 4.5 (from capacitance vs pH plots) compared to that of bulk ZnO (pH 9.5), which could be explained on the basis of a lowering in the work function of the nanostructured semiconductor and its consequent susceptibility to the formation of surface states. This is in excellent agreement with our earlier observation of ultralow threshold field emission with this material in the light of the linear dependence of pzzp with work function of the electrode material. The flat-band potential of the nanostructures is found to be 200 mV more negative than that reported for bulk n-type ZnO electrodes, indicating a higher doping density in the former. A three-dimensional mapping of charge distribution in the surface states is attempted by correlating the capacitance response of the system subjected to a sinusoidal potential modulation to the semiconductor electrode with that resulting from a systematic variation of the redox potential of the dissolved acceptor (achieved by varying the pH of the electrolyte) which further reveals the polyenergetic nature of the surface states.</p>1 aParthasarathy, Meera1 aRamgir, Niranjan, S.1 aSathe, Bhaskar, R.1 aMulla, Imtiaz, S.1 aPillai, Vijayamohanan, K.  uhttps://library.ncl.res.in/content/surface-state-mediated-electron-transfer-nanostructured-zno-multipodelectrolyte-interfaces-001839nas a2200193   4500008004100000022001400041245010600055210006900161260007100230300001600301490000800317520107100325100002501396700002101421700002301442700002201465700003001487856012801517       2007                        eng d  a1932-744700aTemplate-assisted synthesis of ruthenium oxide nanoneedles: electrical and electrochemical properties0 aTemplateassisted synthesis of ruthenium oxide nanoneedles electr  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcNOV  a16593-166000 v1113 a<p>We here demonstrate the formation of bundles of RuO2 nanoneedles (ca. 100 nm diameter) by a templateassisted electrodeposition from aqueous RuCl3 solution under potentiostatic conditions at room temperature. Cyclic voltammetric measurements in 0.5 M H2SO4 show significantly higher redox-related charging behavior for the RuO2 nanoneedles compared to that of the commercial sample, which is also supported by the electrochemical impedance data. A comparison of the specific capacitance reveals a higher value for nanoneedles (3 F/g instead of 0.4 F/g for the bulk), which has been explained on the basis of enhanced reactivity. More interestingly, electrical transport measurements reveal a transition from metallic to semiconducting behavior especially at low-temperature caused by an impurity scattering mechanism. We anticipate that the present simple route for the fabrication of RuO2 nanostructures will be useful to exploit their potentials in various fields such as electrocatalysis, nanoelectronics, and more importantly for designing supercapacitors.</p>1 aSubhramannia, Mahima1 aBalan, Beena, K.1 aSathe, Bhaskar, R.1 aMulla, Imtiaz, S.1 aPillai, Vijayamohanan, K.  uhttps://library.ncl.res.in/content/template-assisted-synthesis-ruthenium-oxide-nanoneedles-electrical-and-electrochemical-002299nas a2200241   4500008004100000022001400041245011800055210006900173260009200242300001400334490000600348520130800354653002301662653004401685653005201729653001501781653003201796100002301828700002301851700002201874700003001896856013101926       2008                        eng d  a1533-488000aElectrochemical sensing of sulphur dioxide: a comparison using dodecanethiol and citrate capped gold nanoclusters0 aElectrochemical sensing of sulphur dioxide a comparison using do  a26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USAbAMER SCIENTIFIC PUBLISHERScJUN  a3184-31900 v83 a<p>A comparison of cyclic voltammograms of dodecanethiol (DDT) capped Au nanoclusters (5.0 +/- 0.5 nm) and trisodium citrate (Cit) capped Au nanoclusters (similar to 10-15 nm) modified glassy carbon electrode shows a dramatic variation in the current when exposed to a small amount of sulphur dioxide. This is explained using the electrocatalytic properties of Au nanoclusters towards the oxidation of SO2, thus facilitating the fabrication of electrochemical sensors for the detection of SO2. The intrinsic redox changes observed for gold nanocluster-modified glassy carbon electrodes disappear on passing SO2, despite a dramatic current increase, which indeed scales up with the amount of dissolved SO2. Interestingly, a complete rejuvenation of the redox behavior of gold is also observed on subsequent removal of SO2 from the solution by passing pure nitrogen for 15 minutes. Further, these nanoclusters when characterized with X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) after SO2 passage reveal a variety of SO2 adsorption modes on gold surface. XP spectra also show a shift of 1.03 eV towards higher binding energy indicating a strong adsorption of SO2 gas, while FTIR gives conclusive evidence for the interaction of SO2 with gold nanoparticles.</p>10acyclic voltammetry10aFourier transform infrared spectroscopy10amonolayer protected gold nanoclusters (Au-MPCs)10aSO2 sensor10aX-ray photoelectron spectra1 aSathe, Bhaskar, R.1 aRisbud, Mandar, S.1 aMulla, Imtiaz, S.1 aPillai, Vijayamohanan, K.  uhttps://library.ncl.res.in/content/electrochemical-sensing-sulphur-dioxide-comparison-using-dodecanethiol-and-citrate-capped-001441nas a2200217   4500008004100000022001400041245006600055210006600121260012500187300001100312490000700323520062500330100002300955700002800978700002201006700003001028700002401058700002301082700002001105856009801125       2008                        eng d  a0003-695100aEnhanced field emission from hexagonal rhodium nanostructures0 aEnhanced field emission from hexagonal rhodium nanostructures  aCIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USAbAMER INST PHYSICScJUN  a2531060 v923 a<p>Shape selective synthesis of nanostructured Rh hexagons has been demonstrated with the help of a modified chemical vapor deposition using rhodium acetate. An ultralow threshold field of 0.72 V/mu m is observed to generate a field emission current density of 4 x 10(-3) mu A/cm(2). The high enhancement factor (9325) indicates that the origin of electron emission is from nanostructured features. The smaller size of emitting area, excellent current density, and stability over a period of more than 3 h are promising characteristics for the development of electron sources. (C) 2008 American Institute of Physics.</p>1 aSathe, Bhaskar, R.1 aKakade, Bhalchandra, A.1 aMulla, Imtiaz, S.1 aPillai, Vijayamohanan, K.1 aLate, Dattatray, J.1 aMore, Mahendra, A.1 aJoag, Dilip, S.  uhttps://library.ncl.res.in/content/enhanced-field-emission-hexagonal-rhodium-nanostructures-002167nas a2200193   4500008004100000022001400041245010500055210006900160260010600229300001200335490000700347520136800354100002801722700002001750700002501770700002301795700003001818856012501848       2008                        eng d  a0008-622300aHigh-purity synthesis of scrolled mats of multi-walled carbon nanotubes using temperature modulation0 aHighpurity synthesis of scrolled mats of multiwalled carbon nano  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcAPR  a567-5760 v463 a<p>Felt-like mats (6-7 mu m thick) of multimalled carbon nanotubes wrapped into scrolls have been synthesized by chemical vapor deposition from a toluene-ferrocene mixture using a temperature ramp from 680 degrees C to 550 degrees C in hydrogen-argon atmosphere. Thermogravimetric analysis reveals a very low catalyst content of ca. 1.25 wt% in the as-synthesized sample while, X-ray photo electron and Raman spectroscopies suggest the results matching with that of multiwalled carbon nanotubes. Considering, different time scales of various reactions and the diffusion of different reactants and products a tentative base growth mechanism has been proposed as per the available characterization data in conjunction with possible scrolling effects. Thermal expansion effects could explain a tentative mechanism for rolling action of sheets. Interestingly, electrical conductivity measurements as a function of temperature suggest a semiconducting behavior, despite being governed by different electron transport mechanisms with activation energies of 0.33 and 1.03 meV corresponding to two temperature ranges respectively. Cyclic voltammetry and electrochemical impedance analysis show a reversible redox behavior due to very low catalyst content and an irreversible etching of the Fe catalyst after acid treatment. (C) 2007 Elsevier Ltd. All rights reserved.</p>1 aKakade, Bhalchandra, A.1 aAllouche, Hatem1 aMahima, Subhramanyam1 aSathe, Bhaskar, R.1 aPillai, Vijayamohanan, K.  uhttps://library.ncl.res.in/content/high-purity-synthesis-scrolled-mats-multi-walled-carbon-nanotubes-using-temperature-002328nas a2200241   4500008004100000022001400041245010400055210006900159260007300228300001200301490000800313520142900321653002201750653002401772653002601796653002201822653001501844100002401859700002301883700002801906700002301934856012901957       2008                        eng d  a1381-116900aSelective cis-dihydroxylation of olefins using recyclable homogeneous molybdenum acetylide catalyst0 aSelective cisdihydroxylation of olefins using recyclable homogen  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcAPR  a111-1190 v2853 a<p>Selective cis-dihydroxylation of various olefins has been carried out using molybdenum acetylide complex CpMO(CO)(3)(C CPh) (1) as catalyst and hydrogen peroxide as an efficient and environmentally benign oxidant. In case of cyclohexene, very high conversion (95%) and selectivity (86%) for cis-dihydroxylated product has been achieved using H2O2 as an oxidant and t-butanol as a solvent. cis-Dihydroxylation of other substrates like styrene, a-methyl styrene, limonene and cyclopentene has also been carried out with very high selectivity for diol. The catalyst and intermediate species have been characterized using FT-IR, UV-vis spectral analysis and XPS studies as well as cyclic voltametric studies. These studies suggest that molybdenum oxo-peroxo complex is the catalytically active species. The intermediate blue complex when characterized by ESI MS suggested the formation of dimeric molybdenum complex and XPS and cyclic voltametric studies confirm the presence of mixed valence Mo(V) and Mo(VI) in the reaction intermediate. Based on the characterization results possible mechanism for dihydroxylation is proposed. Interestingly, even though the catalyst is homogeneous; it could be recovered quantitatively by extraction in aqueous phase and recycled five times without any appreciable loss in cyclohexene conversion and selectivity for cis-1,2-cyclohexanediol. (c) 2008 Elsevier B.V. All rights reserved.</p>10aacetylide complex10acis-dihydroxylation10aHomogeneous catalysis10aHydrogen peroxide10arecyclable1 aBiradar, Ankush, V.1 aSathe, Bhaskar, R.1 aUmbarkar, Shubhangi, B.1 aDongare, Mohan, K.  uhttps://library.ncl.res.in/content/selective-cis-dihydroxylation-olefins-using-recyclable-homogeneous-molybdenum-acetylide-001771nas a2200265   4500008004100000022001400041245006200055210006100117260007300178300001400251490000700265520091100272653002201183653001301205653001901218653000901237100002101246700002401267700002301291700002301314700002201337700003001359700002001389856009601409       2009                        eng d  a1293-255800aField emission investigation of single Fe-doped SnO2 wire0 aField emission investigation of single Fedoped SnO2 wire  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUN  a1114-11170 v113 a<p>Tin oxide submicronwires doped with Fe element were prepared by the thermal evaporation method. Morphological and structural characterizations revealed wires with sub micron size and crystalline in nature. The field electron emission from the single Fe:SnO2 wire was carried out in conventional field emission microscope. The Fowler-Nordheim plot obtained from I-V characteristics of the wire showed a linear behavior typical that of metal. The field enhancement factor estimated from the slope of the F-N plot is 7455 cm(-1), indicating that the field emission is from nanometric features of the emitter. A current density of 10 A/cm(2) has been obtained at an applied field of 4.845 x 10(3) V/mu m. The field emission current-time record at a current level of 1 mu A for more than 3 h duration is promising for various field emissions based applications. (C) 2009 Published by Elsevier Masson SAS.</p>10aCurrent stability10aFe doped10afield emission10aSnO21 aBhise, Ashok, B.1 aLate, Dattatray, J.1 aSathe, Bhaskar, R.1 aMore, Mahendra, A.1 aMulla, Imtiaz, S.1 aPillai, Vijayamohanan, K.1 aJoag, Dilip, S.  uhttps://library.ncl.res.in/content/field-emission-investigation-single-fe-doped-sno2-wire-002078nas a2200169   4500008004100000022001400041245018000055210006900235260007100304300001400375490000800389520130500397100002301702700002401725700003001749856012901779       2009                        eng d  a1932-744700aPreparation and characterization of rhodium nanostructures through the evolution of microgalvanic cells and their enhanced electrocatalytic activity for formaldehyde oxidation0 aPreparation and characterization of rhodium nanostructures throu  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUN  a9616-96220 v1133 a<p>Shape-controlled morphological evolution of nanostructured Rh has been demonstrated with the help of a galvanic displacement reaction using Al in 1 mM aqueous Rh(III) chloride at an open circuit potential 0.99 V and at a temperature of 273 K (room temperature). Nanospheres composed of small nanoparticles of size around 2.9 +/- 0.4 nm having uniform distribution with a FCC pattern have been evolved during the course of the reaction. Electrochemical results coupled with structural and morphological characterization data from transmission electron microscopy (TEM), scanning electron microscopy (SEM), X-ray diffraction (XRD), and cyclic voltammetry (CV) suggested the formation of Rh nanostructures. Considering the role of the potential of substrate Al and Rh and diffusion of reactant and product species toward and from the surface of the Al, we proposed the tentative mechanism for the formation of microgalvanic cell. Significantly, these: rhodium nanostructures exhibit enhanced electrocatalytic activity toward many fuel cell reactions as demonstrated by formaldehyde oxidation in 0.5 M NaOH. The present strategy is expected to be valid for preparing many other similar electrocatalysts (Pt, Au, and Pd) capable of exhibiting such a remarkable size- and shape-dependent reactivity.</p>1 aSathe, Bhaskar, R.1 aShinde, Dhanraj, B.1 aPillai, Vijayamohanan, K.  uhttps://library.ncl.res.in/content/preparation-and-characterization-rhodium-nanostructures-through-evolution-microgalvanic-002272nas a2200253   4500008004100000022001400041245007000055210006900125260009200194300001000286490000600296520136500302653002101667653003001688653004101718100002301759700001901782700002201801700001801823700002101841700003001862700002201892856010401914       2009                        eng d  a1947-293500aSynthesis of Sb-doped SnO2 nanowires and hyperbranched structures0 aSynthesis of Sbdoped SnO2 nanowires and hyperbranched structures  a26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USAbAMER SCIENTIFIC PUBLISHERScAPR  a38-430 v13 a<p>Branched nanostructures of semiconducting materials are of great interest for their potential applications in optoelectronic, photonic devices and sensors. We herein describe a facile single-step chemical vapor deposition route for the synthesis of Sb-SnO2 hyperbranched nanostructures comprised of elongated nanowires with 30-40 nm diameter and 10-20 Am length. The morphology and structure has been characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), selective area electron diffraction (SAED), and powder X-ray diffraction (XRD). Also, a possible mechanism is proposed for the growth of nanowires into the hyperbranched form on the basis of the substrate effect, the role of Au nanoparticles, and the effect of Sb doping on specific morphology evolution. Interestingly, electrical conductivity measurements as a function of temperature suggest a semiconducting behavior, despite being governed by different electron-transport mechanisms with activation energies of 0.55 and 0.17 eV, which correspond to pure SnO2 and Sb-SnO2 nanowires, respectively. A precise control over the operating parameters not only envisages custom-designed, branched structures by a simple and economical route but also offers an alternative method to the expensive and tedious nanofabrication techniques for industrial applications.</p>10aAu Nanoparticles10achemical vapor deposition10aSb-SnO2 Hyperbranched Nanostructures1 aSathe, Bhaskar, R.1 aPatil, Mrudula1 aWalke, Pravin, S.1 aVivek, J., P.1 aLele, Ashish, K.1 aPillai, Vijayamohanan, K.1 aMulla, Imtiaz, S.  uhttps://library.ncl.res.in/content/synthesis-sb-doped-sno2-nanowires-and-hyperbranched-structures-001411nas a2200181   4500008004100000022001400041245007600055210006900131260007300200300001200273490000800285520073500293100002301028700002201051700002201073700003001095856010401125       2010                        eng d  a0009-261400aEffect of Fe3O4 on morphology of Fe-SnO2 hyperbranched heterostructures0 aEffect of Fe3O4 on morphology of FeSnO2 hyperbranched heterostru  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcJUN  a121-1250 v4933 a<p>A simple modified thermal evaporation technique is employed for the synthesis of microstructured Fe:SnO2 system and their plausible growth mechanism has been proposed based on the results from various characterization techniques. Such structures grow in two steps; initially, growth of Fe core takes place from Fe3O4 source which acts as nucleating site for SnO2 growth on its surface as per the vapor-liquid- solid progression. Moreover, the composition of Fe/Sn source and temperature are found to have key roles in governing their morphology. XPS studies clearly demonstrate the presence of Fe species, which acts as a catalyst along with source for hetero-structure growth with SnO2. (C) 2010 Published by Elsevier B.V.</p>1 aSathe, Bhaskar, R.1 aWalke, Pravin, S.1 aMulla, Imtiaz, S.1 aPillai, Vijayamohanan, K.  uhttps://library.ncl.res.in/content/effect-fe3o4-morphology-fe-sno2-hyperbranched-heterostructures-001210nas a2200193   4500008004100000022001400041245010900055210006900164260011000233300001400343490000700357520040500364100002300769700002800792700001900820700002000839700003000859856012700889       2010                        eng d  a1359-734500aSynthesis of Rh-carbon nanotube based heterostructures and their enhanced field emission characteristics0 aSynthesis of Rhcarbon nanotube based heterostructures and their   aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUL  a5671-56730 v463 a<p>Selective decoration of Rh nanospheres on acid functionalized carbon nanotubes has been demonstrated using Al as a sacrificial substrate. Remarkable field emission has been observed for this heterostructure as a high current density of 170 mu A cm(-2) is generated at an ultra-low threshold of 300 V mu m(-1), compared to much smaller values for Rh nanospheres and carbon nanotubes separately.</p>1 aSathe, Bhaskar, R.1 aKakade, Bhalchandra, A.1 aKushwaha, Ajay1 aAslam, Mohammed1 aPillai, Vijayamohanan, K.  uhttps://library.ncl.res.in/content/synthesis-rh-carbon-nanotube-based-heterostructures-and-their-enhanced-field-emission-002211nas a2200169   4500008004100000022001400041245010500055210006900160260011000229300001400339490000600353520147900359100002301838700002101861700003001882856012901912       2011                        eng d  a1754-569200aEnhanced electrocatalytic performance of interconnected Rh nano-chains towards formic acid oxidation0 aEnhanced electrocatalytic performance of interconnected Rh nanoc  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcMAR  a1029-10360 v43 a<p>A chain-like assembly of rhodium nanoparticles (5-7 nm mean diameter) has been synthesized from rhodium chloride with the help of polydentate molecules like tartaric and ascorbic acids (1 : 3 in mM scale) as capping agents at room temperature. Subsequent characterization using transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy reveals a unique inter-connected network like features, while their electrochemical behavior using cyclic voltammetry and current-time transient suggests potential applications as electrocatalysts in fuel cells. A significant negative shift in the onset potential as well as higher anodic peak current density for formic acid oxidation on Rh-tartaric acid (Rh-TA) as compared to that of bulk Rh metal confirms their higher electrocatalytic activity. Interestingly, the enhancement factor (R) with respect to that of bulk metallic Rh towards formic acid oxidation ranges up to 2000% for Rh-TA and 1200% for Rh-AA (Rh-ascorbic acid) respectively. The composition of Rh nano-chains has been further analyzed with thermogravimetry and Fourier transform infra-red spectroscopy to demonstrate the importance of controlling the chain topology using polyfunctional organic molecules. These findings open up new possibilities for tailoring nanostructured electrodes with potential benefits since the development of a better electrocatalysts for many fuel cell reactions continues to be an important challenge.</p>1 aSathe, Bhaskar, R.1 aBalan, Beena, K.1 aPillai, Vijayamohanan, K.  uhttps://library.ncl.res.in/content/enhanced-electrocatalytic-performance-interconnected-rh-nano-chains-towards-formic-acid-001208nas a2200193   4500008004100000022001400041245015600055210006900211260011000280300001400390490000700404520037100411100002200782700002300804700001900827700002000846700002500866856012300891       2011                        eng d  a1359-734500aNovel catalyst-free synthesis of vertically aligned silicon nanowire-carbon nanotube heterojunction arrays for high performance electron field emitters0 aNovel catalystfree synthesis of vertically aligned silicon nanow  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJUN  a7785-77870 v473 a<p>A novel, catalyst-free strategy for the direct synthesis of vertically aligned silicon nanowire-carbon nanotube (SiNW-CNT) heterojunction arrays is presented. Such a heterojunction with the junction area in the nanoscale displays enhanced field emission characteristics at low turn-on field, with a nearly three times increase in the field enhancement factor.</p>1 aKale, Vinayak, S.1 aSathe, Bhaskar, R.1 aKushwaha, Ajay1 aAslam, Mohammed1 aShelke, Manjusha, V.  uhttps://library.ncl.res.in/content/novel-catalyst-free-synthesis-vertically-aligned-silicon-nanowire-carbon-nanotube-001390nas a2200205   4500008004100000022001400041245008200055210006900137260009200206300001400298490000700312520060700319653002100926653002600947653002400973653002700997100002101024700002301045856011601068       2012                        eng d  a1533-488000aSignificant enhancement of formic acid oxidation using rhodium nanostructures0 aSignificant enhancement of formic acid oxidation using rhodium n  a26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USAbAMER SCIENTIFIC PUBLISHERScDEC  a8994-89980 v123 a<p>The electrocatalytic activity of as-synthesized shape selective Rh nanostructures has been demonstrated using cyclic voltammetry, revealing unique shape-dependant performance towards HCOOH oxidation. interestingly, the enhancement factor (R) for different shapes of Rh with respect to that of commercial Rh towards formic acid oxidation ranges up to 20,000% for cubes as compared to 17,500% for pyramids and 11,000% for hexagons respectively. Mechanistic pathway for comparatively better sensitivity of cubes as compared to other shapes has been correlated with the results of X-ray diffraction.</p>10aelectrocatalysis10aFormic Acid Oxidation10aPreferential Growth10aRhodium Nanostructures1 aBalan, Beena, K.1 aSathe, Bhaskar, R.  uhttps://library.ncl.res.in/content/significant-enhancement-formic-acid-oxidation-using-rhodium-nanostructures-001830nas a2200193   4500008004100000245010900041210006900150260000800219300001600227490000600243520112700249100002201376700002401398700002301422700002501445700001901470700002001489856012701509       2018                        eng d00aBiomass-mediated synthesis of Cu-doped TiO2 nanoparticles for improved-performance lithium-ion batteries0 aBiomassmediated synthesis of Cudoped TiO2 nanoparticles for impr  cOCT  a13676-136840 v33 a<p>Pure TiO2 and Cu-doped TiO2 nanoparticles are synthesized by the biomediated green approach using the Bengal gram bean extract. The extract containing biomolecules acts as capping agent, which helps to control the size of nanoparticles and inhibit the agglomeration of particles. Copper is doped in TiO2 to enhance the electronic conductivity of TiO2 and its electrochemical performance. The Cu-doped TiO2 nanoparticle-based anode shows high specific capacitance, good cycling stability, and rate capability performance for its envisaged application in lithium-ion battery. Among pure TiO2, 3% Cu-doped TiO2, and 7% Cu-doped TiO2 anode, the latter shows the highest capacity of 250 mAh g(-1) (97.6% capacity retention) after 100 cycles and more than 99% of coulombic efficiency at 0.5 A g(-1) current density. The improved electrochemical performance in the 7% Cu-doped TiO2 is attributed to the synergetic effect between copper and titania. The results reveal that Cu-doped TiO2 nanoparticles might be contributing to the enhanced electronic conductivity, providing an efficient pathway for fast electron transfer.</p>1 aKashale, Anil, A.1 aDwivedi, Pravin, K.1 aSathe, Bhaskar, R.1 aShelke, Manjusha, V.1 aChang, Jia-Yaw1 aGhule, Anil, V.  uhttps://library.ncl.res.in/content/biomass-mediated-synthesis-cu-doped-tio2-nanoparticles-improved-performance-lithium-ion02932nas a2200241   4500008004100000022001400041245009600055210006900151260000800220300001000228490000800238520213400246653002002380653001502400653001502415653001902430100002502449700002202474700002302496700002402519700002202543856012502565       2019                        eng d  a0925-400500aSuperior humidity sensor and photodetector of mesoporous ZnO nanosheets at room temperature0 aSuperior humidity sensor and photodetector of mesoporous ZnO nan  cAUG  a83-920 v2933 a<p>Miniaturized sensor technology is vastly demanding multifunctional materials to fulfill many requirements simultaneously; instead of integrating various sensors into a single device. Efficient operation of these miniaturized sensors at room temperature is highly feasible and cost-effective. The humidity sensing and photodetection is precise merit of sensing in special usage like artificial skin. Sensitivity enhancement in both humidity and photodetection required the high surface area for adsorption as well as a high charge transfer mechanism. The two dimensional (2D) zinc oxide nanosheets (ZnO NS) is the ultimate structure for dimensionally confined transport properties owing to the specific surface atomic configuration that results in high sensitivity, low operating temperature, fast response and recovery, and improved selectivity. Furthermore, introducing porosity into 2D nanostructures has opened new opportunities to enhance the efficiency of sensors and detectors via increasing large surface area and tunable physical and chemical properties. Here we report preparation of mesoporous and highly crystalline 2D ZnO NS by a single step, template free, cost-effective chemical method. The structural and morphological characterizations of ZnO NS are carried out using XRD, FESEM, XPS, TEM respectively. The high-resolution TEM images emphasize sheet-like morphology with a thickness of around 18-22 nm. Further the mesoporous ZnO NS (MZNS) with the pore size between 5-10 nm are achieved by simple heat-treatment. XPS and PL study is confirming the oxygen deficiency in MZNS. The MZNS exhibits an excellent responsivity than PZNS with a fast response and rapid recovery time of 25 s and 5 s respectively along with good cyclic stability which is highly crucial for smart humidity sensor. Furthermore, it considerably enhances photo-sensor performance than pristine ZnO NS (PZNS) with (similar to)1 s response time as well as (similar to)1 s recovery time along with better stability. These promising results illustrate the great potential of MZNS for next-generation humidity sensors and photodetectors.</p>
10ahumidity sensor10aMesoporous10ananosheets10aPhoto-detector1 aGupta, Shobhnath, P.1 aPawbake, Amit, S.1 aSathe, Bhaskar, R.1 aLate, Dattatray, J.1 aWalke, Pravin, S.  uhttps://library.ncl.res.in/content/superior-humidity-sensor-and-photodetector-mesoporous-zno-nanosheets-room-temperature