01833nas 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-002581nas a2200253   4500008004100000022001400041245014900055210006900204260006900273300001200342490000800354520161400362653001501976653002301991653003002014653002402044653002302068653001802091100002202109700002802131700001702159700002502176856012602201       2014                        eng d  a0254-058400aPreparation and characterization of porous fly ash/NiFe2O4 composite: promising adsorbent for the removal of congo red dye from aqueous solution0 aPreparation and characterization of porous fly ashNiFe2O4 compos  aPO BOX 564, 1001 LAUSANNE, SWITZERLANDbELSEVIER SCIENCE SAcNOV  a371-3790 v1483 a<p>A series of fly ash/NiFe2O4 composites were prepared using fly ash and aqueous solutions of Ni, Fe nitrate salts and NaOH by co-precipitation followed by calcination method. The % mass ratio of fly ash: NiFe2O4 was varied in the range of 0:100 to 100:0. Samples were characterized by powder XRD, SEM, FTIR and N-2 adsorption-desorption measurements. These samples were further evaluated for their adsorptive performance in removal of Congo red (CR) dye from an aqueous solution. In all the composites, spinel nickel ferrite phase was found to be capable to get anchored with the fly ash surface and exhibited more crystalline nature as compared to pure NiFe2O4 phase. The BET surface area and porous character of the composite were found to increase with the decrease in the contribution of the fly ash, reach to maximum and then decreases on further decrease in fly ash. The composite having % mass ratio of fly ash: NiFe2O4 = 50:50 exhibited maximum CR adsorption from the aqueous solution on account of the higher BET surface area, more porous character, favorable condition for diffusion of dye molecules and combined effect of chemisorption and physisorption. Under optimum conditions, it has shown the recyclability with adsorption capacity of the magnitude 23.33 mg g(-1), which is much higher than individual fly ash, NiFe2O4 and other composites. The sorption data provided good fit with pseudo-second order kinetic model. The analyses of the adsorption data indicated that, the Langmuir model provides better correlation with the experimental data. (C) 2014 Elsevier B.V. All rights reserved.</p>10aAdsorption10aComposite material10aElectron microscopy (SEM)10aInorganic compounds10apowder diffraction10aPrecipitation1 aSonar, Shilpa, K.1 aNiphadkar, Prashant, S.1 aMayadevi, S.1 aJoshi, Praphulla, N.  uhttps://library.ncl.res.in/content/preparation-and-characterization-porous-fly-ashnife2o4-composite-promising-adsorbent-0