摘要
TiO2 photocatalysts loaded with V2O5 were prepared via a modified hydrolysis process,and characterized by X-ray diffraction,transmission electron microscopy,Raman spectra and diffuse reflectance UV-Vis spectra measurements. The photocatalytic activity of V2O5/TiO2 was investigated by employing splitting of water for O2 evolution. The results indicate that V2O5 loading can pronouncedly improve the photocatalytic activity of TiO2 with Fe3+ as an electron acceptor under UV or visible light irradiation. The optimum mass fraction of the loaded V2O5 is 8%,and the largest speed of O2 evolution for 8%V2O5 (mass fraction) loaded TiO2 catalyst is 118.2 μmol/(L.h) under UV irradiation,and 83.7 μmol/(L.h) under visible light irradiation.
TiO2 photocatalysts loaded with V2O5 were prepared via a modified hydrolysis process, and characterized by X-ray diffraction, transmission electron microscopy, Raman spectra and diffuse reflectance UV-Vis spectra measurements. The photocatalytic activity of V2O5/TiO2 was investigated by employing splitting of water for O2 evolution. The results indicate that V2O5 loading can pronouncedly improve the photocatalytic activity of TiO2 with Fe^3＋ as an electron acceptor under UV or visible light irradiation. The optimum mass fraction of the loaded V2O5 is 8%, and the largest speed of O2 evolution for 8%V2O5 （mass fraction） loaded TiO2 catalyst is 118.2 μmol/（L·h） under UV irradiation, and 83.7 μmol/（L·h） under visible light irradiation.
基金
Project(08JJ3022) supported by the Natural Science Foundation of Hunan Province, China
