PENG Shao-qin, ZHANG Qing-zhu, LI Yue-xiang¹⁾

(Department of Chemistry, Nanchang University, Nanchang 330031, China)

Abstract: The photocatalyst Sm₂Ti₂S₂O₅ was prepared by a modified coprecipitation-gas solid reaction method. The samples were characterized by X-ray diffraction and UV-Vis diffuse reflectance spectroscopy. The activity of the prepared photocatalyst under visible light irradiation was evaluated by photocatalytic hydrogen evolution from water using formic acid as electron donor. The results show that compared with traditional high temperature solid state reaction, the prepared method of Sm₂Ti₂S₂O₅ bya modified coprecipitation-gas solid reaction method can effectively reduce the reaction temperature and shorten reaction time. The prepared photocatalyst Sm₂Ti₂S₂O₅ had a activity for hydrogen evolution from water under visible light irradiation.

Key words: Sm₂Ti₂S₂O₅; Gas solid reaction; Coprecipitation; Visible light; Hydrogen generation

E-mail: liyx@ncu.edu.cn

Journal of Molecular Catalysis, Vol. 25, Issue 2, 2011, 147~151