Acta Phys. -Chim. Sin. ›› 2004, Vol. 20 ›› Issue (04): 424-427.doi: 10.3866/PKU.WHXB20040420

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Study of Loaded Photocatalysts by Precious Metals on the Photocatalytic Reactivity

Zhang Jin-Long;Zhao Wen-Juan;Chen Hai-Jun;Xu Hua-Sheng;Chen Ai-Ping;Anpo Masa-Kazu   

  1. Institute of Fine Chemicals, East China University of Science and Technology, Shanghai 200237; 1Key Laboratory for Ultrofine Materials of Ministry of Education, East China University of Science and Technology, Shanghai 200237;Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai,Osaka 599-8531, Japan
  • Received:2003-09-12 Revised:2003-11-27 Published:2004-04-15
  • Contact: Zhang Jin-Long E-mail:jlzhang@ecust.edu.cn

Abstract: The functional photocatalysts of high photocatalytic reactivity under visible light irradiation were prepared by loading precious metals on the vanadium ion implanted titanium oxide. The photocatalytic hydrolysis reaction of methylacetylene was studied under the visible light and solar beam. Those modified titanium oxides were used to construct conversion system of solar to chemical energy. It was found from experimental results that existence of precious metals on the V/TiO2 photocatalysts has the advantage of promotion of hydrogenation reaction in photocatalytic hydrolysis reaction of methylacetylene, and increase of propene product. The photocatalytic reactivities under visible light irradiation have a close relationship with oxidation states of the precious metals on titanium oxide and it is necessary for increasing photcatalytic reactivities that precious metals be reduced to 0 valence.

Key words: Titanium oxide, Photocatalyst, Visible light, Precious metal loaded,  Ion implant