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Acta Phys. Chim. Sin.  2013, Vol. 29 Issue (03): 585-589    DOI: 10.3866/PKU.WHXB201212253
CATALYSIS AND SURFACE SCIENCE     
Fabrication and Visible-Light Photocatalytic Activity of In situ Carbon and Nitrogen Co-Doped TiO2 Hollow Sphere
LIU Su-Qin1,2, DAI Gao-Peng1,2, LIANG Ying1,2, LIU Hua-Jun1, LIANG Gui-Jie2
1 Department of Chemical engineering and Food Science; Hubei University of arts and science, Xiangyang 441053, Hubei Province, P. R. China;
2 Hubei Key Laboratory of Low Dimensional Optoelectronic Materials and Devices, Xiangyang 441053, Hubei Province, P. R. China
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Abstract  

Carbon and nitrogen co-doped TiO2 hollow spheres (CNTHs) were synthesized by hydrothermal treatment of titanium carbonitride (TiCN) in a mixture of H2O2, HF, ethanol, and water. CNTHs were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), and UV-visible (UV-Vis) diffuse reflectance spectroscopy. Some of the carbon and nitrogen from TiCN was doped into the lattice of TiO2 in situ, and some carbon atoms were incorporated into the interstitial positions of the TiO2 lattice. The CNTHs exhibited enhanced absorption over the whole visible-light region and an obvious red shift at the absorption edges compared with that of TiO2. The ability of the CNTHs to degrade methylene blue (MB) in aqueous solution under visible light irradiation (λ≥400 nm) was investigated. The CNTHs showed much higher photocatalytic activity than P25 in the degradation of MB because of the synergetic effects of their strong visible absorption and unique hollow sphere structure.



Key wordsCarbon and nitrogen co-doping      TiO2 hollow sphere      Visible light      Photocatalysis     
Received: 02 October 2012      Published: 25 December 2012
MSC2000:  O644  
Fund:  

The project was supported by the Natural Science Foundation of Hubei Province, China (2012FFB01903) and Research Program of Hubei Province Department of Education, China (T201215, Z20102601, Q20122507).

Cite this article:

LIU Su-Qin, DAI Gao-Peng, LIANG Ying, LIU Hua-Jun, LIANG Gui-Jie. Fabrication and Visible-Light Photocatalytic Activity of In situ Carbon and Nitrogen Co-Doped TiO2 Hollow Sphere. Acta Phys. Chim. Sin., 2013, 29(03): 585-589.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB201212253     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2013/V29/I03/585

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