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Citation: WU Yu-Cheng, LIU Xiao-Lu, YE Min, XIE Ting, HUANG Xin-Min. Preparation and Properties of Carbon Nanotube-TiO₂ Nanocomposites[J]. Acta Physico-Chimica Sinica, ;2008, 24(01): 97-102. doi: 10.3866/PKU.WHXB20080117 shu

Preparation and Properties of Carbon Nanotube-TiO₂ Nanocomposites

1.
School of Material Science and Engineering, Hefei University of Technology, Hefei 230009, P. R. China

Received Date: 18 June 2007
Available Online: 20 November 2007

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 od 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.
- Sol-gel method; TiO2; CNTs; Photocatalysis
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沈阳化工大学材料科学与工程学院沈阳 110142

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Preparation and Properties of Carbon Nanotube-TiO₂ Nanocomposites