Inorganic Chemicals Industry ›› 2022, Vol. 54 ›› Issue (6): 38-45.doi: 10.19964/j.issn.1006-4990.2021-0450

• Reviews and Special Topics • Previous Articles     Next Articles

Research progress on photocatalysis by bismuth?based semiconductor composite TiO2

YANG Shuang1(),ZHAO Siqin1,2,3(),YANG Huiying1   

  1. 1.College of Chemical and Environmental Science,Inner Mongolia Normal University,Hohhot 010022,China
    2.Inner Mongolia Autonomou Region Environmental Chemistry Key Laboratory
    3.Collaborative Innovation Center for Water Environment Security of Inner Mongolia Autonomous Region
  • Received:2021-09-22 Online:2022-06-10 Published:2022-06-22
  • Contact: ZHAO Siqin E-mail:ys1410350082@163.com;zhaosq@imnu.edu.cn

Abstract:

Photocatalysis is widely used in the fields of environmental pollution treatment and energy development due to its green environmental protection and abundant solar energy.As a typical semiconductor photocatalyst,TiO2 has always attracted attention because of its easy preparation,low price,and environmental friendliness.However,its wide forbidden band width,photo?generated carriers easy to recombine and other shortcomings limit its wide application.Solving these shortcomings has become the main work at present.Bismuth?based semiconductor materials have attracted attention in recent years because of their special structure,low band gap energy,and high photocatalytic activity under visible light.Bismuth?based semiconductor composite TiO2 can break through the inherent defects of TiO2,thereby further improving the visible light photocatalytic activity of its composite system.The structure and catalytic principle of TiO2 were introduced.On this basis,the preparation methods,visible light catalytic principle and application of several typical bismuth based semiconductor composite TiO2 nanomaterials were reviewed.

Key words: TiO2, bismuth?based semiconductor, composite photocatalyst

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