二氧化钛光催化剂改性研究进展

doi:10.11962/1006-4990.2019-0245

Abstract

Abstract:

Photocatalysis technology is a new green environmental protection technology with resource saving,environmental friendliness and great application prospect in the field of organic pollutant treatment.As a typical semiconductor photocatalyst,TiO₂ is favored by people for its good photoactivity,good stability,non-toxic to human health,low cost,mild reaction conditions and no secondary pollution etc..However,its wide band gap and higher recombination rate of photogenerated electronhole pair limit its large-scale application,which are technical problems to be solved.The catalytic mechanism of TiO₂ was explained.The limitations of traditional TiO₂ were analyzed.And the modification methods and principles for improving the catalytic activity of TiO₂,such as ion doping,surface deposition of precious metals,surface photosensitization,semiconductor composite,load and other methods,were introduced.At last the future research and development direction of TiO₂ photocatalyst were discussed.

Key words: photocatalyst, TiO₂ modification, degradation, organic pollutant

CLC Number:

TQ134.11

Zhu Jiaxin,Xiong Yuhua,Guo Rui. Research progress in modification of TiO₂ photocatalyst[J]. Inorganic Chemicals Industry, 2020, 52(3): 23-27.

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References 33

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Research progress in modification of TiO₂ photocatalyst

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Research progress in modification of TiO2 photocatalyst