02354nas 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-001588nas a2200253   4500008004100000022001400041245008500055210006900140260006900209300001200278490000800290520072300298653001401021653001801035653001201053100002101065700002601086700002001112700002001132700001801152700002701170700001801197856011901215       2008                        eng d  a0254-058400aSynthesis and characterization of high surface area CeO2-doped SnO2 nanomaterial0 aSynthesis and characterization of high surface area CeO2doped Sn  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcDEC  a719-7220 v1123 a<p>In the present investigation the synthesis and characterization of high surface area CeO2-doped SnO2 nanomaterial has been reported. The material was synthesized by coprecipitation process combined with surfactant incorporating method. The concentration level of Ce (III) additive was varied systematically from 1 to 11 wt.%. After calcinations at500 degrees C,a high BET surface area of 40 m(2)/g was obtained for 7 wt.% CeO2. The effect of variation of sintering temperature (600-800 degrees C/2h) on the particle size and surface area of a CeO2/SnO2 system was investigated. The material obtained was nanocrystalline, having particle size in the range of 10-16 nm. (C) 2008 Elsevier B.V. All rights reserved.</p>10aCeO2:SnO210aNanomaterials10asensors1 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-ceo2-doped-sno2-nanomaterial-001552nas a2200253   4500008004100000022001400041245009400055210006900149260009200218300001200310490000700322520064200329653001800971653002000989653002001009100002101029700002601050700002001076700002001096700001801116700002701134700001801161856011901179       2008                        eng d  a0950-083900aSynthesis and characterizations of NiTiO(3) nanoparticles prepared by the sol-gel process0 aSynthesis and characterizations of NiTiO3 nanoparticles prepared  a4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLANDbTAYLOR & FRANCIS LTDcMAR  a467-4720 v883 a<p>Nanocrystalline nickel titanate (NiTiO(3)) composite 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 750 degrees C for 2 h in air. The results revealed that a pure hexagonal phase of NiTiO(3) could be obtained at the low temperature of 750 degrees C. The phase evolution of NiTiO(3) was investigated by X-ray diffraction patterns, Fourier-transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Particle size and morphology were studied by transmission electron microscopy.</p>10aNanoparticles10anickel titanate10asol-gel process1 aGambhire, A., B.1 aLande, Machhindra, K.1 aKalokhe, S., B.1 aMandale, A., B.1 aPatil, K., R.1 aGholap, Ramkrishna, S.1 aArbad, B., R.  uhttps://library.ncl.res.in/content/synthesis-and-characterizations-nitio3-nanoparticles-prepared-sol-gel-process-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-001831nas a2200241   4500008004100000022001400041245009400055210006900149260006900218300001200287490000800299520096700307653001701274653002801291653002001319100002101339700002601360700001801386700001901404700002701423700001801450856012101468       2011                        eng d  a0254-058400aDegradation of methylene blue via photocatalysis of transition metal-loaded sulfated TiO20 aDegradation of methylene blue via photocatalysis of transition m  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcFEB  a807-8120 v1253 a<p>Transition metal-loaded nanocrystalline SO42-/TiO2 powders were prepared by sol-gel method. Anatase is found as the active phase in all the samples. Sulfation process clearly stabilizes TiO2 catalyst phase against sintering, maintaining anatase phase and relatively high surface area values with respect to pure TiO2. Wide structural and surface characterization of samples was carried out in order to establish a correlation between the effect of sulfation and metal incorporation on the TiO2 photocatalytic properties. The maximum photocatalytic decomposition of methylene blue solution was achieved with sulfation of TiO2. In addition, incorporation of metal into the structure of SO42-/TiO2 seems to enhance the photocatalytic activity of the samples, which is ascribed to the enlargement of specific surface area, photogenerated carriers separation, light absorption, as well as the higher surface acidity. (C) 2010 Elsevier B.V. All rights reserved.</p>10ananomaterial10aPhotocatalytic activity10asol-gel process1 aGambhire, A., B.1 aLande, Machhindra, K.1 aArbad, B., R.1 aRathod, S., B.1 aGholap, Ramkrishna, S.1 aPatil, K., R.  uhttps://library.ncl.res.in/content/degradation-methylene-blue-photocatalysis-transition-metal-loaded-sulfated-tio2-002039nas a2200265   4500008004100000022001400041245008600055210006900141260010600210300001200316490000800328520112000336653001101456653000901467653001901476653002501495100002001520700001901540700001801559700001801577700001801595700001901613700002101632856012001653       2014                        eng d  a0038-092X00aSolar photocatalytic degradation of methylene blue using doped TiO2 nanoparticles0 aSolar photocatalytic degradation of methylene blue using doped T  aTHE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLANDbPERGAMON-ELSEVIER SCIENCE LTDcMAY  a473-4790 v1033 a<p>Doped-TiO2 nanoparticles (M:TiO2: Fe, Zn, Zr, Sb, Ce and nM:TiO2: B, C, N, P, S) with anatase structure were prepared by sol-gel method and characterized by X-ray diffraction (XRD), Transmission electron microscopy (TEM), X-ray photoelectron spectra (XPS), Brunauer-Teller method (BET), UV-Vis diffuses reflectance spectroscopy (DRS). Results revealed that the anatase structure is highly stable for all doped TiO2 prepared compounds with enhancement in the surface area. UV-Vis diffuse reflectance spectra showed that these dopants were responsible for narrowing the band gap of TiO2 and shifting its optical response from ultraviolet to visible-light region. The photocatalytic activities of these multi-doped TiO2 catalysts were investigated by degradation methylene blue in aqueous solution under solar-light illumination. The results showed an appreciable enhancement in the photoactivity of the C-doped TiO2 as compared to other multi-doped TiO2 because of the formation of Ti+3 species which prevent the recombination of electron-hole pairs in C-doped TiO2. (C) 2014 Elsevier Ltd. All rights reserved.</p>10aCarbon10airon10aMethylene blue10aSolar photocatalysis1 aBhosale, R., R.1 aPujari, S., R.1 aMuley, G., G.1 aPatil, S., H.1 aPatil, K., R.1 aShaikh, M., F.1 aGambhire, A., B.  uhttps://library.ncl.res.in/content/solar-photocatalytic-degradation-methylene-blue-using-doped-tio2-nanoparticles-0