Electronic Chemical Properties of Vanadium Doped TiO2 for Photocatalytic Degradation of BTEX
V-doped TiO2 (V-TiO2) was synthesised using solvothermal technique and immobilised onto fibreglass cloth (FGC). The XRD pattern of doped sample showed slight positive shift to higher angle indicating that the V ions were well substituted into the Ti lattices. The band-gap energy of V-TiO2 was lower than that of P25, pure TiO2, (3.28 eV for P25 and 2.90 eV for V-TiO2) demonstrating it could be excited by visible light. The XANES spectra of the Ti K-edge transition indicated most Ti ions were in the tetravalent state with octahedral coordination. The A2 species on the surfaces of V-TiO2 were found to be the main active sites during photocatalytic degradation of BTEX under visible light irradiation.
B. J. Ruck and T. Kemmitt
L. Laokiat et al., "Electronic Chemical Properties of Vanadium Doped TiO2 for Photocatalytic Degradation of BTEX", Materials Science Forum, Vol. 700, pp. 223-226, 2012