Papers by Author: Laksana Laokiat

Abstract: 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.