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Acta Physico-Chimica Sinica  2007, Vol. 23 Issue (12): 1917-1921    DOI: 10.3866/PKU.WHXB20071216
Article     
Preparation, Characterization and Photo-catalytic Behavior of TiO2 Catalysts with Oxygen Vacancies
CHEN Qi-Yuan; TONG Hai-Xia; YIN Zhou-Lan; HU Hui-Ping; LI Jie; LIU Liang-Liang
College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, P. R. China
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Abstract  The rutile TiO2 catalysts with oxygen vacancies were obtained under 927 ℃calcination using a mixed gas of saturation water vapor and H2 at 69 ℃. The catalysts were identified using X-ray diffraction (XRD), specific surface (BET), electron paramagnetic resonance spectroscopy (EPR), UV-Vis diffuse refraction spectroscopy (DRS), and X-ray photoelectron spectrum (XPS) measurements. The effect of calcination time on photocatalytic activity of TiO2 with different oxygen vacancies for O2 evolution was studied. The result indicated that appropriate oxygen vacancies could obviously improve the photocatalytic activity of rutile TiO2. The maximumO2 evolution speed of rutile TiO2 with oxygen vacancies was 222 μmol·L-1·h-1.

Key wordsTiO2      Calcination      Oxygen vacancies      Photocatalytic activity     
Received: 14 June 2007      Published: 21 September 2007
MSC2000:  O643.3  
Corresponding Authors: CHEN Qi-Yuan     E-mail: cqy@mail.csu.edu.cn
Cite this article:

CHEN Qi-Yuan; TONG Hai-Xia; YIN Zhou-Lan; HU Hui-Ping; LI Jie; LIU Liang-Liang. Preparation, Characterization and Photo-catalytic Behavior of TiO2 Catalysts with Oxygen Vacancies. Acta Physico-Chimica Sinica, 2007, 23(12): 1917-1921.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20071216     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2007/V23/I12/1917

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