02194nas a2200205   4500008004100000245011500041210006900156260000800225300001200233490000600245520149600251100001601747700001501763700001501778700001801793700002001811700001701831700001801848856012201866       2017                        eng d00aVisible-light active catechol-metal oxide carbonaceous polymeric material for enhanced photocatalytic activity0 aVisiblelight active catecholmetal oxide carbonaceous polymeric m  cJAN  a384-3960 v53 a<p>esigning new materials for sustainable energy and environmental applications is one of the prime focuses in chemical science. Here, an unprecedented visible-light active catechol-TiO2 carbonaceous polymer based organic-inorganic hybrid material was synthesized by a photosynthetic route. The visible light induced (&gt; 400 nm) photosynthetic polymerization of catechol led to the formation of carbonaceous polymeric deposits on the surface of TiO2. The band gap energy of hybrids was shifted to the visible region by orbital hybridization between 3d(Ti) of TiO2 and 2p(O), pi(C) of catechol. The Tauc plot clearly revealed that 1.0 wt% catechol-TiO2 carbonaceous polymer remarkably tailored the optical band gap of TiO2 from 3.1 eV to 1.9 eV. The synthesized hybrid materials were thoroughly characterized and their photocatalytic activity was evaluated towards toxic Cr(VI) to relatively less toxic Cr(III) reduction under visible light irradiation (&gt; 400 nm), and solar light-driven H-2 production through water splitting. Very interestingly, the hybrid material showed 5- and 10-fold enhanced activity for photocatalytic Cr(VI) reduction and solar light-driven H-2 production respectively compared with pure TiO2. Moreover, the hybrid materials showed enhanced stability during photocatalysis. Thus, the simple photosynthetic strategy for developing light harvesting organic-inorganic hybrid materials can open up potential applications in energy and environmental remediation.</p>1 aKarthik, P.1 aVinoth, R.1 aSelvam, P.1 aBalaraman, E.1 aNavaneethan, M.1 aHayakawa, Y.1 aNeppolian, B.  uhttps://library.ncl.res.in/content/visible-light-active-catechol-metal-oxide-carbonaceous-polymeric-material-enhanced01665nas a2200277   4500008004100000022001400041245010500055210006900160260000900229300001200238490000800250520078100258653002001039653000901059653002301068653001301091653002101104653000901125100002501134700001601159700001601175700002401191700003001215700001801245856012401263       2020                        eng d  a0038-092X00aAromatic amine passivated TiO2 for dye-sensitized solar cells (DSSC) with similar to 9.8% efficiency0 aAromatic amine passivated TiO2 for dyesensitized solar cells DSS  cMAY   a965-9710 v2013 a<p>In this work, the efficiency of dye-sensitized solar cells (DSSC) was improved by capping TiO2 with simple aromatic amines as a complexing agent. The aromatic amines, aniline and o-phenylenediamine capped TiO2 composites were synthesized via hydrothermal route and used as scattering layer in dye-sensitized solar cell (DSSC). Markedly, the maximum photo-conversion efficiency of 9.84% was achieved with o-phenylenediamine capped-TiO2 composite as o-phenylenediamine capped-TiO2 showed higher reflectivity than the pristine TiO2, which is highly beneficial for reflecting the photons back to photoanode. In addition, the average life time of carriers in o-phenylenediamine capped-TiO2 was found to be 9.8 ms, which was 2 times higher than the pristine TiO2 (4.29 ms).</p>
10aAromatic amines10aDSSC10aElectron injection10alifetime10aScattering layer10aTiO21 aKumar, T., R. Naveen1 aYuvaraj, S.1 aKavitha, P.1 aSudhakar, Vediappan1 aKrishnamoorthy, Kothandam1 aNeppolian, B.  uhttps://library.ncl.res.in/content/aromatic-amine-passivated-tio2-dye-sensitized-solar-cells-dssc-similar-98-efficiency