Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (05): 536-542. Previous Articles     Next Articles

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  1. (河海大学水文水资源与水利工程科学国家重点实验室 河海大学环境科学与工程学院
    浅水湖泊综合治理与资源开发教育部重点实验室 南京 210098)
  • 投稿日期:2010-08-29 修回日期:2010-11-02 发布日期:2010-11-12
  • 通讯作者: 杨汉培
  • 基金资助:


Surface Modification of Carbon Nano Tubes for the Photocatalytic Activity Enhancement of Composite TiO2-CNTs

YANG Han-Pei, SHI Ze-Min, DAI Kai-Jing, DUAN Yun-Ping, WU Jun-Ming   

  1. (1 State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, College of Environment Science and Engineering, Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, Hohai University, Nanjing 210098)
  • Received:2010-08-29 Revised:2010-11-02 Published:2010-11-12
  • Contact: Han-Pei YANG

A new method to improve photocatalytic performance of TiO2 by dispersing TiO2 onto carbon nano tubes (CNTs) hydrophilically modified by acid and polyvinyl alcohol is reported. Characterizations using various techniques such as Fourier transform-infrared spectroscopy, X ray photoelectron spectroscopy, thermogravimetric-differential thermal analysis, X-ray diffraction, Brunauer-Emmett-Teller N2 adsorption, transmission electron microscopy and UV-Vis diffuse reflectance spectroscopy indicated that the improved photocatalytic activity of the composites was attributed to the high dispersion of TiO2 on CNTs and the intimate contact between TiO2 and CNTs resulting in dense heterojunctions at the interface of TiO2 and CNTs to take full advantages of CNTs functionalities.

Key words: carbon nano tubes, surface modification, aqueous dispersibility, composite catalyst, photocatalysis