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Acta Physico-Chimica Sinica  2002, Vol. 18 Issue (12): 1099-1103    DOI: 10.3866/PKU.WHXB20021209
Article     
The Photo Stimulated Surface Reaction of Synthesis of Methanol from Carbon Dioxide and Water on Cu/TiO2-NiO
Chen Song-Zhe;Zhong Shun-He
State Key Laboratory of C1 Chemistry and Technology, College of Chemical Engineering and Technology, Tianjin University, Tianjin 300072
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Abstract  The n-p coupled semiconductor material 0.5%Cu/TiO2-2.0%NiO was prepared using sol-gel method, on which the photo stimulated surface reaction (PSSR) of the synthesis of CH3OH from CO2 and H2O was studied. XRD, TEM, IR, UV-Vis and TPD experiments were adopted to characterizing the structure, photon absorbing and chemisorbing ability of the material. It was revealed that, during PSSR on the prepared material,CH3OH can be secured at normal temperature; while at the temperature of 200 ℃,CO2 conversion can be further increased, and the selectivity for CH3OH could reach up to 87.5%, because of the light-surface-heat cooperation effect. According to the experimental results, the surface precursor of CH3OH was specified to be the horizontal adsorbed state of CO2.Finally the PSSR mechanism was presented.

Key wordsPhoto stimulated surface reaction      Coupled semiconductors      Carbon dioxide      Water      Methanol     
Received: 08 April 2002      Published: 15 December 2002
Corresponding Authors: Zhong Shun-He     E-mail: shzhong@public.tpt.tj.cn
Cite this article:

Chen Song-Zhe;Zhong Shun-He. The Photo Stimulated Surface Reaction of Synthesis of Methanol from Carbon Dioxide and Water on Cu/TiO2-NiO. Acta Physico-Chimica Sinica, 2002, 18(12): 1099-1103.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20021209     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2002/V18/I12/1099

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