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Acta Phys. -Chim. Sin.  2008, Vol. 24 Issue (11): 2019-2024    DOI: 10.1016/S1872-1508(08)60079-0
Article     
Characterization of Visible Light Response N-F Codoped TiO2 Photocatalyst Prepared by Acid Catalyzed Hydrolysis
LI Xiao-Hui, LIU Shou-Xin
College of Material Science and Engineering, Northeast Forestry University, Harbin 150040, P. R. China
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Abstract  N-FcodopedTiO2 (TONF) photocatalystswere prepared usingacidcatalyzed hydrolysismethod frommixed aqueous solution of TiCl4 and NH4F. The photocatalytic activity of the TONF was evaluated through the degradation of phenol under both visible and UVlight irradiation. X-ray photoelectron spectroscopy (XPS), UV-Vis diffuse reflectance spectroscopy (DRS), X-ray diffraction (XRD), scanning electron microscope (SEM), and N2 adsorption isotherm were used to characterize the obtained powders. The results showed that N-F co-doped TiO2 exhibited significant improvement of visible light catalytic activity. N-F co-doping could improve dispersion of TiO2, inhibit particle size agglomeration, and retard phase transformation. Doped N could extend the light response of TiO2 to visible light region. In addition, narrower band gap formed by F-doping was beneficial to the high visible light photocatalytic activity.

Key wordsTiO2      N-F codoping      Visible light      Photocatalyst     
Received: 14 May 2008      Published: 25 August 2008
MSC2000:  O643  
Corresponding Authors: LIU Shou-Xin     E-mail: liushouxin@126.com
Cite this article:

LI Xiao-Hui, LIU Shou-Xin. Characterization of Visible Light Response N-F Codoped TiO2 Photocatalyst Prepared by Acid Catalyzed Hydrolysis. Acta Phys. -Chim. Sin., 2008, 24(11): 2019-2024.

URL:

http://www.whxb.pku.edu.cn/10.1016/S1872-1508(08)60079-0     OR     http://www.whxb.pku.edu.cn/Y2008/V24/I11/2019

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