Preparation of TiO₂ photocatalyst loaded with V₂O₅ for O₂ evolution

来源期刊：中南大学学报(英文版)2009年第6期

论文作者：高友良 陈启元 童海霞 胡慧萍 杨亚辉 周建良

文章页码：919 - 924

Key words：TiO₂; V₂O₅; photocatalytic activity; O₂ evolution

Abstract: 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.

基金信息：supported by the Natural Science Foundation of Hunan Province, China