Studies on the Photo Stimulated Surface-catalytic Reaction of Carbon Dioxide and Water over Cu/ZnO-NiO

Abstract

Abstract: The n-p coupled semiconductor material 0.5%Cu/ZnO-1.5%NiO was prepared by using sol-gel method, over which the photo stimulated surface-catalytic reaction(PSSR) of synthesis of CH₃OH from CO₂ and H₂O was studied. XRD, TEM, IR, UV-Vis and TPD experiments were adopted for characterizing the structure, photon absorbing and chemisorbing ability of the material. It was revealed that, during PSSR over the prepared material, CH₃OH, CH₄ and CO can be secured at a normal temperature. The influence of temperature on PSSR was discussed, based on which shearing and horizontal chemisorption states of CO₂ were ascertained to be the surface precursors of CH₄ and CH₃OH, respectively. Finally the PSSR mechanism was presented.

Key words: Photo stimulated surface-catalytic reaction(PSSR), Composite semiconductors, Carbon dioxide, Water, Methanol

CLC Number:

O643

TrendMD:

CHEN Song-Zhe, ZHONG Shun-He. Studies on the Photo Stimulated Surface-catalytic Reaction of Carbon Dioxide and Water over Cu/ZnO-NiO[J]. Chem. J. Chinese Universities, 2003, 24(1): 135.

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Studies on the Photo Stimulated Surface-catalytic Reaction of Carbon Dioxide and Water over Cu/ZnO-NiO

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