Vahid Jabbari - In,V-codoped TiO2 nanocomposite prepared via a photochemical reduction technique as a novel high efficiency visible-light-driven nanophotocatalyst

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      Publication Details (including relevant citation   information):

        RSC Adv.,   2015,5,   78128-78135

      Abstract:

        In the current study, a series of novel, high efficiency   photocatalysts of In,V-codoped TiO2 were   developed. The TiO2 nanoparticles   were synthesized by sol–gel and hydrothermal methods and   different molar percentages (0.1–1%) of vanadium (V) and Indium   (In) nanoclusters were deposited over the TiO2 nanoparticles via photochemical   reduction. XRD, SEM, EDX, TEM, XPS and UV-vis DRS analyses were   carried out to characterize the prepared In,V-codoped   TiO2 nanocatalysts,   and methyl orange (MO) was used as the probe environmental   pollutant to test the photocatalytic performance of the prepared   catalysts under UV and visible light irradiation. Our study   demonstrated that In and V nanoclusters were successfully   deposited over TiO2 particles via a   photochemical deposition technique and the metal doping slightly   suppressed TiO2 crystal   growth. The optical analysis showed a red shift in the light   absorption spectrum and decrease in the band gap of In,V-codoped   TiO2 catalysts   compared to that of parent TiO2.   XPS study revealed that the doped elements In and V are in   oxidation state of 3 (InIII),   4 (VIV)   and 5 (VV).   The photo-oxidative decomposition of MO showed that doping of In   and V can considerably improve the photocatalytic activity of   TiO2.   Thus, for the first time, we demonstrated that   TiO2 codoped   with binary metals of In and V can serve as a high efficiency   visible-light-active photocatalyst.

      Address (URL): 10.1039/C5RA13179K