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Acta Physico-Chimica Sinica  2003, Vol. 19 Issue (02): 100-104    DOI: 10.3866/PKU.WHXB20030202
Article     
The Photocatalytic Enhancement Effect of CO on Pd/TiO2
Zhang Min;Jin Zhen-Sheng;Wang Shou-Bin;Zhang Shun-Li;Zhang Zhi-Jun
State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000;Laboratory of Special Functional Materials, Henan University, Kaifeng 475001
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Abstract  The photocatalytic oxidation of CO on Pd(2%)/TiO2 was investigated. It was found that CO oxidation activity on Pd/TiO2 was greatly enhanced if illuminated with UV light(λ=365 nm) as compared with that in the dark(the ratio of the above two rate constants is ca. 15). But on bare TiO2 no CO oxidation reaction was observed both in the dark and under UV light illumination. The photocatalytic enhancement of CO on Pd/TiO2 could be elucidated by the increase of surface concentration of oxygen atoms (or O-) on Pd and the spillover of oxygen atoms from Pd to TiO2.

Key wordsCO oxidation      Pd(2%)/TiO2      Oxygen atom      Photocatalytic enhancement      Spillover     
Received: 02 April 2002      Published: 15 February 2003
Corresponding Authors: Jin Zhen-Sheng;     E-mail: zhenshengjin@henu.edu.cn
Cite this article:

Zhang Min;Jin Zhen-Sheng;Wang Shou-Bin;Zhang Shun-Li;Zhang Zhi-Jun. The Photocatalytic Enhancement Effect of CO on Pd/TiO2. Acta Physico-Chimica Sinica, 2003, 19(02): 100-104.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20030202     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2003/V19/I02/100

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