01866nas a2200241   4500008004100000022001400041245009100055210006900146260007400215300001200289490000700301520101100308653002301319653002301342653001401365653001901379653002501398653002401423100002101447700002201468700001801490856011601508       2009                        eng d  a0928-070700aSynthesis of Si-MCM-41 from ternary SiO2-CTAOH-H2O system via dry gel conversion route0 aSynthesis of SiMCM41 from ternary SiO2CTAOHH2O system via dry ge  aVAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDSbSPRINGERcAUG  a244-2500 v513 a<p>Steam assisted dry gel conversion method was employed for the synthesis of Si-MCM-41 from ternary SiO2:CTAOH:H2O systems wherein fumed silica was used as a source of silica. The influence of synthesis time, molar ratios of CTAOH/SiO2 in dry gel and the water content at the bottom of autoclave on the quality and formation of mesophases has been investigated. Powder XRD, N-2 adsorption-desorption, TEM and hydrothermal stability test were the techniques used for sample characterization. Keeping molar ratio of CTAOH/SiO2 constant, shorter synthesis time, lower unit cell parameter and d spacing were observed when steam assisted dry gel conversion method was employed in place of conventional hydrothermal method. There exists an optimum lower limit for water content at the bottom of autoclave for reducing the synthesis period. Keeping synthesis temperature and CTAOH/SiO2 molar ratio fixed, Si-MCM-41 with improved hydrothermal stability was obtained by steam assisted dry gel conversion route.</p>10aDry gel conversion10apowder diffraction10aSi-MCM-4110aSol-gel growth10aStructural stability10aTextural properties1 aTaralkar, U., S.1 aNiphadkar, P., S.1 aJoshi, P., N.  uhttps://library.ncl.res.in/content/synthesis-si-mcm-41-ternary-sio2-ctaoh-h2o-system-dry-gel-conversion-route-001833nas a2200217   4500008004100000022001400041245007300055210006900128260006900197300001400266490000800280520106500288653002401353653001901377653003001396653001901426100002101445700002401466700002201490856010301512       2014                        eng d  a0254-058400aNovel precursors for anatase nanorods and their application in DSSCs0 aNovel precursors for anatase nanorods and their application in D  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcOCT  a1110-11160 v1473 a<p>Syntheses for the formation of two new precursors for TiO2 nanorods: titanium propanediolate and titanium erythritolate, have been detailed. These precursors have a rod like morphology and have been found to have higher thermal stability than commercially available precursors. The conversion of the precursors to anatase phase of TiO2 involves a simple heating protocol and importantly the morphology is conserved. The resulting anatase nanorods have been characterised and evaluated as photoanodes in dye sensitized solar cells (DSSCs). Overall device efficiencies of 3.2% and 2.3% were achieved when anatase rods (obtained from titanium propanediolate and titanium erythritolate respectively) were used. These values are higher than the 1.1% efficiency obtained from the control device (made with spherical anatase nanoparticles). It is found that forming ordered 1-D rods leads to enhanced charge transport and charge collection at the electrode along with a commensurate decrease in charge recombination. (C) 2014 Elsevier B.V. All rights reserved.</p>10aInorganic compounds10aNanostructures10aNon-crystalline materials10aSol-gel growth1 aMishra, Biswajit1 aAgarkar, Shruti, A.1 aKhushalani, Deepa  uhttps://library.ncl.res.in/content/novel-precursors-anatase-nanorods-and-their-application-dsscs-0