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Citation: MIN Shi-Xiong, WANG Fang, AN Hong-Gang, WU Dong-Qing, HAN Yu-Qi, FENG Lei, TONG Yong-Chun. Photocatalytic Activity of TiO₂/Conjugated Polymer Composite under Natural Light[J]. Chinese Journal of Applied Chemistry, ;2009, 26(4): 409-412. shu

Photocatalytic Activity of TiO₂/Conjugated Polymer Composite under Natural Light

1.
Department of Chemistry, Key Lab of Resource and Environmental Chemistry of West China, Hexi University, Zhangye 734000

Corresponding author: MIN Shi-Xiong,
Received Date: 8 April 2008
Available Online: 1 September 2008
Fund Project: 河西学院西部资源环境化学重点实验室基金资助项目(XZ0706) (XZ0706)

Precursor of complex materials was synthesized by sol-gel method from TiCl4 and PVC.The nano-meter TiO₂/conjugated polymer(TiO₂/CP) composite photocatalyst was prepared by calcinating the precursor at 260 ℃.TEM,XRD,FTIR and UV-Vis were used to characterize the composite photocatalyst and its photocatalytic activity for the degradation of dye methylene blue(MB) was studied.The results show that under the irradiation of natural light,when the calcination temperature was 260 ℃ and the TiO₂ content was 66.36%,MB could be degraded more efficiently on the TiO₂/CP than on pure nanometer TiO₂.The average size of the composite photocatalyst was about 30 nm.The crystalline structure of TiO₂ in the composite was in anatase form.Doping of CP could extended the photoresponse of TiO₂ to the light in the whole UV-Vis region(λ=190~800 nm),resulting in efficient separation of photogenerated charges,hence the photocatalytic activity of composite photocatalyst was greatly enhanced.
- TiO₂/conjugated polymer,
- composite nanomaterials,
- natural light,
- methylene blue,
- degradation
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Photocatalytic Activity of TiO₂/Conjugated Polymer Composite under Natural Light