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ISSN 1000-6818CN 11-1892/O6CODEN WHXUEU
Acta Phys Chim Sin >> 2008,Vol.24>> Issue(09)>> 1589-1596     doi: 10.3866/PKU.WHXB20080911         中文摘要
Influence of Pore Size and Surface Area of Activated Carbon on the Performance of TiO2/AC Photocatalyst
CHEN Yu-Juan; HU Zhong-Hua; WANG Xiao-Jing; ZHAO Guo-Hua; LIU Ya-Fei; LIU Wei
Department of Chemistry, Tongji University, Shanghai 200092, P. R. China
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Commercial activated carbon (AC) was post-activated by means of simultaneous physical-chemical activation in order to produce porous carbon supports with different pore sizes and surface areas. Photocatalysts of AC-supported TiO2 were prepared by well-dispersed deposition using inorganic species of H2TiO3 as Ti source. Nitrogen adsorption, XRD, and SEM were used to characterize ACs and TiO2/ACs and to investigate the influence of AC surface area and pore size on the resultant catalysts. The photocatalytic performance of TiO2/AC catalysts was studied by degradation of methylene blue (MB) in aqueous solution. The influence of catalyst dosage and MB concentration on the degradation was investigated. The results showed that nano-TiO2 deposit was formed in the particle size of 12-20 nm. The larger the AC surface area and average pore size, the smaller the TiO2 particle formed on the carbon surface. It was found that TiO2/AC catalysts had a synergetic effect of AC adsorption and TiO2 photocatalysis on the degradation of MB, so that the efficiency increased significantly. The kinetics of MB degradation by TiO2/AC was of apparent first order reaction mechanism.

Keywords: Supported TiO2   Activated carbon support   Pore size   Photocatalyst   Methylene blue  
Received: 2008-05-12 Accepted: 2008-06-02 Publication Date (Web): 2008-07-22
Corresponding Authors: HU Zhong-Hua Email: huzh@mail.tongji.edu.cn


Cite this article: CHEN Yu-Juan; HU Zhong-Hua; WANG Xiao-Jing; ZHAO Guo-Hua; LIU Ya-Fei; LIU Wei. Influence of Pore Size and Surface Area of Activated Carbon on the Performance of TiO2/AC Photocatalyst[J]. Acta Phys. -Chim. Sin., 2008,24 (09): 1589-1596.    doi: 10.3866/PKU.WHXB20080911
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