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Citation: MIN Shi-Xiong, WANG Fang, WEI Li-Qiang, WANG Yong-Sheng, AN Hong-Gang, WU Dong-Qing. Preparation and Photocatalytic Activity of Fe³⁺ Doped TiO₂/Attapulgite Composite Photocatalyst[J]. Chinese Journal of Applied Chemistry, ;2010, 27(6): 700-704. doi: 10.3724/SP.J.1095.2010.90350 shu

Preparation and Photocatalytic Activity of Fe³⁺ Doped TiO₂/Attapulgite Composite Photocatalyst

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

Received Date: 18 May 2009
Revised Date: 12 October 2009

Fe³⁺ doped TiO₂/attapulgite composite photocatalyst(Fe³⁺-TiO₂/ATP) was synthesized by acid-catalyzed sol-gel method,and the structure,morphology,light absorption properties and photocatalytic activity under visible light irradiation were investigated.XRD and TEM analyses reveal that the crystalline structure of ATP in the composite photocatalyst was found thermally stable after being treated at 450℃.TiO₂ nanoparticles with anatase form were uniformly dispersed on the surface of ATP without aggregation and the average crystallite size of TiO₂ nanoparticles in the composite photocatalyst was smaller than that of the neat TiO₂.UV-Vis-DRS shows that the doping of Fe³⁺ could extend the light response of the composite photocatalyst from UV to visible light region.The Fe³⁺-TiO₂/ATP composite photocatalyst exhibited higher photocatalytic activity for the degradation of methyl blue(MB) and the determined apparent reaction rate constant were about 1.37 times that of TiO₂/ATP,4.83 times that of P25 and 6.51 times that of neat TiO₂,respectively. Furthermore,the composite photocatalyst showed easy separation property compared with neat TiO₂ and P25.
- Fe³⁺ doping,
- TiO₂/attapulgite,
- composite photocatalyst,
- visible light,
- MB,
- photocatalytic degradation
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Preparation and Photocatalytic Activity of Fe³⁺ Doped TiO₂/Attapulgite Composite Photocatalyst