02180nas a2200205 4500008004100000022001400041245012100055210006900176260011000245300001400355490000700369520134200376100002101718700001801739700001901757700001901776700002201795700002501817856013201842 2011 eng d a0959-942800aSelf assembled CdLa2S4 hexagon flowers, nanoprisms and nanowires: novel photocatalysts for solar hydrogen production0 aSelf assembled CdLa2S4 hexagon flowers nanoprisms and nanowires  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcJAN a2624-26310 v213 a

We report here a new ternary chalcogenide material, cadmium lanthanum sulfide (CdLa2S4) produced using a facile hydrothermal method at 433 K. The effect of the solvent on the morphology of the CdLa2S4 was demonstrated for the first time. The prima facie observations revealed the formation of highly crystalline hexagonal structures in the form of flowers in aqueous medium. The flowers comprise hexagonal columns similar to 300 nm in diameter and 1-1.2 mu m in length. All the hexagonal structures have a sharp tip with a cavity of 10 nm and are almost equal in size. The nanoprisms have an average base size of 35 nm with 35 nm edges, and the nanowires have a diameter of 10-15 nm; both were obtained in methanol. Crystal and electronic structure calculations were performed using the Vienna ab initio simulation package (VASP) based on density functional theory (DFT). Considering the band gap of pristine CdLa2S4 in the visible region (2.3 eV), we have demonstrated CdLa2S4 as a photocatalyst for the production of H-2 under solar light. Nanostructured CdLa2S4 prisms gave the maximum hydrogen production, i.e. 2552 mu mol h(-1). Being a stable ternary nanostructured metal sulfide (with nanohexagons, nanoprisms, nanowires), CdLa2S4 may have other potential prospective applications in solar cells and optoelectronic devices.

1 aKale, Bharat, B.1 aBaeg, Jin-Ook1 aKong, Ki-jeong1 aMoon, Sang-Jin1 aNikam, Latesh, K.1 aPatil, Kashinath, R. uhttps://library.ncl.res.in/content/self-assembled-cdla2s4-hexagon-flowers-nanoprisms-and-nanowires-novel-photocatalysts-solar-002098nas a2200205 4500008004100000022001400041245011100055210006900166260007100235300001600306490000800322520129100330100002801621700001801649700002101667700002501688700002501713700002901738856012501767 2013 eng d a1932-744700aSpin transport and magnetic correlation parameters for graphene-like nanocarbon sheets doped with nitrogen0 aSpin transport and magnetic correlation parameters for graphenel a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcDEC a27105-271130 v1173 a

Globally, graphene magnetism has captivated the attention of researchers in recent years. To obtain magnetic ordering, irregularities in the carbon network, like defects, adatoms, etc., are essential. Herein, we report on spin transport and magnetic correlations in graphene-like nanocarbon sheets (GNCs) that were doped with nitrogen by use of tetrakis(dimethylamino)ethylene (TDAE). The spin transport measurements, performed by electron spin resonance technique, showed that both spin-spin and spin-lattice relaxation times are increased by nitrogen doping. The magnetic correlations, measured on a vibrating sample magnetometer, showed that ordering parameters are reduced for nitrogen-loaded GNCs. Chemical analysis, carried out via electron spectroscopy, revealed that nitrogen atoms exchange couples electron-to-hole with the carbon network Analysis of I-V measurements showed that higher-order resistance is appreciably decreased for nitrogen-doped GNCs. The observed decrease is due to an increase in nonbonding states baying small local density. After doping, states in this region may be localized pi spin populated around the doped region. By and large, the approximately 20% magnetization that exists in GNCs is found to be reduced to 5% by introduction of nitrogen.

1 aAlegaonkar, Ashwini, P.1 aKumar, Arvind1 aPatil, Sagar, H.1 aPatil, Kashinath, R.1 aPardeshi, Satish, K.1 aAlegaonkar, Prashant, S. uhttps://library.ncl.res.in/content/spin-transport-and-magnetic-correlation-parameters-graphene-nanocarbon-sheets-doped-002446nas a2200325 4500008004100000022001400041245015900055210006900214260005700283300001400340490000800354520126400362653003101626653002801657653001301685653001501698653001601713653001801729653002701747653001501774100002801789700002101817700002701838700002401865700002401889700002601913700002601939700002501965856013001990 2014 eng d a0303-402X00aStudies on morphology of polyaniline films formed at liquid-liquid and solid-liquid interfaces at 25 and 5 A degrees C, respectively, and effect of doping0 aStudies on morphology of polyaniline films formed at liquidliqui a233 SPRING ST, NEW YORK, NY 10013 USAbSPRINGERcMAY a1079-10890 v2923 a

It is well accepted that the morphology of the nanomaterials has great effect on the properties and hence their applications. Therefore, morphology of materials has become a focus of research in the scientific world. The present study shows that interfacial polymerization and subsequent self-assembly provides a control over the morphology, nanorod/nanosheet, of polyaniline (PANI) films synthesized by liquid-liquid interface reaction technique and solid-liquid interface reaction technique. The synthesized PANI films and its particulate structure are characterized by using various spectroscopic techniques such as UV-visible, ATR-IR, Raman and XPS. The study confirmed the formation, the structure, the size and shape of particles and morphology of PANI by using analytical techniques namely, SAED, SEM and TEM. An important observation is that doping with HCl significantly improves the nanorod formation at the interface. The doped PANI electrode exhibits a higher area with rectangular shape in CV cycle and better cycle stability when compared with the performance of undoped PANI films. We believe that the results of these studies can give valuable leads to manoeuvre formation of PANI films with desired morphology for various applications.

10ainterfacial polymerization10aLiquid-liquid interface10aNanorods10ananosheets10apolyaniline10aSelf-assembly10aSolid-liquid interface10aThin films1 aWaghmode, Babasaheb, J.1 aPatil, Sagar, H.1 aJahagirdar, Mandar, M.1 aPatil, Virendra, S.1 aWaichal, Rupali, P.1 aMalkhede, Dipalee, D.1 aSathaye, Shivaram, D.1 aPatil, Kashinath, R. uhttps://library.ncl.res.in/content/studies-morphology-polyaniline-films-formed-liquid-liquid-and-solid-liquid-interfaces-25-001797nas a2200265 4500008004100000022001400041245015900055210006900214260007100283300001400354490000600368520078100374653001001155653002401165653001901189653001701208653002401225100002901249700001901278700002901297700002501326700002501351700002301376856013201399 2015 eng d a1944-824400aShape-selective oriented cerium oxide nanocrystals permit assessment of the effect of the exposed facets on catalytic activity and oxygen storage capacity0 aShapeselective oriented cerium oxide nanocrystals permit assessm a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcAPR a8545-85550 v73 a

The catalytic performance of a range of nanocrystalline CeO2 samples, prepared to have different morphologies, was measured using two accepted indicators; oxygen storage and diesel soot combustion. The same powders were characterized hi detail by HR-TEM, XRD, XPS, and Raman methods. The study demonstrates that activity is determined by the relative fraction of the active crystallographic planes, not by the specific surface area of the powders. The physical study is a step toward quantitative evaluation of the relative contribution to activity of the different facets. The synthetic protocol permits fabrication of CeO2 nanostructures with preferentially grown active planes, and therefore has potential in developing catalytic applications and in nanocompositing.

10aceria10achemical activities10acrystal facets10ananocrystals10atexture coefficient1 aSreeremya, Thadathil, S.1 aKrishnan, Asha1 aRemani, Kottayilpadi, C.1 aPatil, Kashinath, R.1 aBrougham, Dermot, F.1 aGhosh, Swapankumar uhttps://library.ncl.res.in/content/shape-selective-oriented-cerium-oxide-nanocrystals-permit-assessment-effect-exposed-facets-001549nas a2200277 4500008004100000022001400041245005400055210005400109260000800163300001400171490000600185520072300191653002400914653002000938653001800958653002000976653001400996100002301010700002601033700002301059700002501082700002501107700002801132700002501160856008601185 2016 eng d a1878-535200aSynthesis and characterization of FeTiO3 ceramics0 aSynthesis and characterization of FeTiO3 ceramics cSEP aS429-S4320 v93 a

Nanocrystalline FeTiO3 ceramics powders were prepared by the sol-gel process combined with a surfactant-assisted template method. The resulting powders were calcined at different temperatures ranging from 150 degrees C to 600 degrees C for 2 h in an air. The results revealed that a pure hexagonal phase of FeTiO3 could be obtained at low temperature, 600 degrees C. The phase evolution of FeTiO3 was investigated by X-ray diffraction patterns (XRD), Fourier-transform infrared spectroscopy (FT-IR), and X-ray photoelectron spectroscopy (XPS). Particle size and morphology was studied by transmission electron microscopy (TEM). (C) 2011 Production and hosting by Elsevier B.V. on behalf of King Saud University.

10aElectron microscopy10ahexagonal phase10aNanoparticles10asol-gel process10aTi-O bond1 aGambhire, Anil, B.1 aLande, Machhindra, K.1 aRathod, Sandip, B.1 aArbad, Balasaheb, R.1 aVidhate, Kaluram, N.1 aGholap, Ramakrishna, S.1 aPatil, Kashinath, R. uhttps://library.ncl.res.in/content/synthesis-and-characterization-fetio3-ceramics01597nas a2200181 4500008004100000245012800041210006900169260000800238490000700246520089100253100002801144700001801172700001801190700002601208700002501234700002601259856013001285 2016 eng d00aSynthesis and study of calixarene-doped polypyrrole-TiO2/ZnO composites: antimicrobial activity and electrochemical sensors0 aSynthesis and study of calixarenedoped polypyrroleTiO2ZnO compos cJAN0 v233 aThe present communication describes the synthesis of an electroactive nanocomposite of calixarene- doped polypyrrole ( PPY) containing an oxide of Ti/ Zn. The additive TiO2/ ZnO serves as an oxidizing agent for the polymerization, thus avoiding the use of hazardous organic solvents while calixarene doping stabilizes the polymer. The materials synthesized herein were characterized by UV- visible spectroscopy, FT- IR spectroscopy, scanning electron microscopy ( SEM), transmission electron microscopy ( TEM), energy- dispersive X- ray spectroscopy ( EDX), X- ray photoelectron spectroscopy ( XPS), and cyclic voltammetry ( CV) of synthesized nanocomposites. It was revealed that the resulting calixarene- doped polypyrrole- TiO2/ ZnO nanocomposite has ( 1) long- time stability, ( 2) significant electrochemical activity for sensing formaldehyde, and ( 3) good antimicrobial activity.1 aWaghmode, Babasaheb, J.1 aHusain, Zahid1 aJoshi, Meenal1 aSathaye, Shivaram, D.1 aPatil, Kashinath, R.1 aMalkhede, Dipalee, D. uhttps://library.ncl.res.in/content/synthesis-and-study-calixarene-doped-polypyrrole-tio2zno-composites-antimicrobial-activity