Acta Phys. -Chim. Sin. ›› 2011, Vol. 27 ›› Issue (05): 1143-1148.doi: 10.3866/PKU.WHXB20110511

• CATALYSIS AND SURFACE SCIENCE • Previous Articles     Next Articles

Photocatalytic Reduction of Water to Hydrogen over Eosin Y/Pt/SiO2 Catalysts

ZHANG Xiao-Jie1,2, TANG Chang-Qing2, JIN Zhi-Liang1, LV Gong-Xuan1, LI Shu-Ben1   

  1. 1. State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, P. R. China;
    2Department of Metallurgical and Chemical Engineering, Jiyuan Vocational and Technical Collage, Jiyuan, 454650, Henan Province, P. R. China
  • Received:2010-12-13 Revised:2011-03-06 Published:2011-04-28
  • Contact: LV Gong-Xuan
  • Supported by:

    The project was supported by the National Key Basic Research Program of China (973) (2007CB613305, 2009CB220003).


A novel efficient photoscatalytic system Eosin Y/Pt/SiO2 for photocatalytic reduction of water to hydrogen under visible light irradiation was constructed. The effects of parameters, such as the surface physical property of SiO2 (i.e., specific surface area), method of mixing Eosin Y and SiO2, and light intensity on catalyst properties for hydrogen evolution were investigated systemically. With increase of SiO2 specific surface area, the rate of hydrogen evolution increased. Either over high or low intensive irradiation is detrimental to obtain high quantum efficiency for hydrogen evolution. Compared to the Eosin Y adsorbed on SiO2 by an impregnation method, the composite system in which Eosin Y mixed with SiO2 physically in situ displayed higher rate and superior stability of hydrogen evolution.

Key words: Eosin Y, Photosensitized hydrogen evolution, Silicon dioxide, Visible light


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