Imaging Science and Photochemistry ›› 2015, Vol. 33 ›› Issue (5): 426-433.DOI: 10.7517/j.issn.1674-0475.2015.05.426

Previous Articles     Next Articles

Synthesis of TiO2/Bi2O3 Nanocomposites for Visible Light Driven Photocatalytic H2 Production

SHI Lina1,2, QU Yang2, LI Zhijun2, SUN Liqun2, JING Liqiang1,2   

  1. 1. Chinese-Russian College of Heilongjiang University, Harbin 150080, Heilongjiang, P. R. China;
    2. Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, Heilongjiang University, Harbin 150080, Heilongjiang, P. R. China
  • Received:2015-07-02 Revised:2015-07-20 Online:2015-09-16 Published:2015-09-16


Bi2O3 nanoparticles were prepared by one-pot water-organic two-phase separated hydrolysis-solvothermal, and then TiO2 nanoparticles with different molar ratio were loaded on the surface of Bi2O3 with facile wet chemical method to prepare TiO2/Bi2O3 nanocomposites. The result of atmosphere controlled surface photovoltage spectrum (SPS) show that Bi2O3 loaded with suitable TiO2 could improve the photoinduced charge separation. Both of visible light driven photocatalytic H2 production and degradation of organic pollution efficiency of Bi2O3 after loaded with TiO2 promoted significantly, that sample of 7T-B possess of the highest photocatalytic H2 production efficiency. This may be attributed to the suitable conduction band of TiO2 which could accept the high energy photoinduced electrons from Bi2O3 so that inhibit the recombination of photogenerate electron-hole pairs and maintain the high reduction of the high energy electrons.

Key words: Bi2O3, TiO2/Bi2O3 nanocomposites, photogenerated charge separation, visible light driven photocatalysis, hydrogen production