Preparation, characterization and photocatalytic behavior of WO3-TiO2/Nb2O5 catalysts
来源期刊：中南大学学报(英文版)2007年第6期
论文作者：童海霞 陈启元 胡慧萍 尹周澜 李洁 周建良
文章页码：788 - 788
Key words：photocatalysis; load; oxygen evolution; rutile TiO2; Nb2O5; WO3
Abstract: TiO2/Nb2O5 photocatalyst loaded with WO3 (WO3-TiO2/Nb2O5) was prepared by a modified hydrolysis process, and characterized by X-ray diffractometry, transmission electron microscopy, Raman spectra and UV-Vis diffuse refraction spectroscopy. The photocatalytic activity of WO3-TiO2/Nb2O5 was investigated by employing splitting of water for O2 evolution. The results indicate that WO3 loading can pronouncedly improve the photocatalytic activity of TiO2/Nb2O5 by using Fe3+ as an electron acceptor under UV irradiation. The optimum molar fraction of the loaded WO3 is 2%, and the largest speed of O2 evolution for 2% WO3-TiO2/Nb2O5 catalyst is 151.8 μmol/(L.h).
基金信息：the National High-Tech Research and Development Program of China
