Citation: Fang Wang, Shi Xiong Min. TiO₂/polyaniline composites:An efficient photocatalyst for the degradation of methylene blue under natural light[J]. Chinese Chemical Letters, ;2007, 18(10): 1273-1277. doi: 10.1016/j.cclet.2007.08.010 shu

TiO₂/polyaniline composites:An efficient photocatalyst for the degradation of methylene blue under natural light

Fang Wang ,
Shi Xiong Min

Department of Chemistry, Key Laboratory of Resource and Environmental Chemistry of West China, Hexi University, Zhangye 734000, China

Received Date: 9 April 2007

Fund Project: We are grateful to financial support from Department of Chemistry and Key Laboratory of Resources and Environmental Chemistry of West China,Hexi University,China.

Polyaniline (PAn) sensitized nanocrystalline TiO₂ composites (TiO₂/PAn) were successfully prepared and used as an efficient photocatalyst for the degradation of dye methylene blue (MB). The results showed that PAn was able to sensitize TiO₂ efficiently and the composite photocatalyst could be activated by absorbing both the ultraviolet and visible light (λ:190~800 nm), whereas pure TiO₂ absorbed ultraviolet light only (λ<380 nm). Under the irradiation of natural light, MB could be degraded more efficiently on the TiO₂/PAn composites than on the TiO₂. Furthermore, it could be easily separated from the solution by simple sedimentation.
- TiO₂/PAn,
- Composite photocatalyst,
- Methylene blue,
- Degradation,
- Natural light
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