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Acta Physico-Chimica Sinica  2008, Vol. 24 Issue (01): 97-102    DOI: 10.3866/PKU.WHXB20080117
Article     
Preparation and Properties of Carbon Nanotube-TiO2 Nanocomposites
WU Yu-Cheng; LIU Xiao-Lu; YE Min; XIE Ting; HUANG Xin-Min
School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, P. R. China
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Abstract  Coating carbon nanotube surface with TiO2 as anatase was performed by sol-gel method using Ti(OBu)4. The morphological structure of the photocatalyst particles was characterized by XRD and TEM. Absorbency was analyzed by the UV-Vis diffuse reflection spectra of TiO2 and CNT-TiO2 photocatalysts. The photocatalytic activities of the materials heat-treated at different reaction temperatures have been tested on decomposable substrate methyl orange solution under UV-light illumination. The results showed that the nanocomposites had excellent photocatalytic ability. When the wavelength was between 200 -800 nm, CNT-TiO2 nanocomposites had good absorbency. TEM micrographs showed that TiO2 was closely coated on the surface of carbon nanotubes. The best heat treatment temperature of CNT-TiO2 nanocomposites was 450 ℃. The crystal formof TiO2 was anatase and the diameter of crystal was 7.3 nm. The photodegradation rate of CNT-TiO2 nanocomposites was better than that of pure TiO2 under sunlight.

Key wordsSol-gel method      TiO2      CNTs      Photocatalysis     
Received: 18 June 2007      Published: 20 November 2007
MSC2000:  O643.07  
Corresponding Authors: WU Yu-Cheng     E-mail: ycwu@hfut.edu.cn
Cite this article:

WU Yu-Cheng; LIU Xiao-Lu; YE Min; XIE Ting; HUANG Xin-Min. Preparation and Properties of Carbon Nanotube-TiO2 Nanocomposites. Acta Physico-Chimica Sinica, 2008, 24(01): 97-102.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20080117     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2008/V24/I01/97

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