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Citation: Liu Wang, Wang Dejun, Li Tiejin. A STUDY OF HYDROGEN PRODUCTION BY PHOTOCATALYTIC DECOMPOSITION OF LIQUID WATER ON Co₃O₄/SrTiO₃[J]. Acta Physico-Chimica Sinica, ;1987, 3(02): 123-128. doi: 10.3866/PKU.WHXB19870204 shu

A STUDY OF HYDROGEN PRODUCTION BY PHOTOCATALYTIC DECOMPOSITION OF LIQUID WATER ON Co₃O₄/SrTiO₃

1.
Department of Chemistry; Jilin University; Changchun

Received Date: 28 October 1985
Available Online: 15 April 1987

This paper reports the results of a study devoted to the hydrogen production from liquid water on Co_3O_4/SrTiO_3 powders under UV irradiation. The results indi- cated that the photocatalysts behave rather actively in alkali solution. A strong con- centration dependence of OH~- for the rate of H_2 formation was observed. Reduction pretreatment of the photocatalysts by H_2 is unfavourable for the H_2 production, but an oxidation pretreatment by O_2 may improve remarkably the catalytic effi- ciency. By using SPV technique and ESR, it is found that near and above valence band of SrTiO_3 the photocatalysts have band-gap surface states, which may associate with surface cobalt ions. We believe that the surface states play a key role in the charge separation and transfer processes. Finally, a mechanism model is proposed.
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A STUDY OF HYDROGEN PRODUCTION BY PHOTOCATALYTIC DECOMPOSITION OF LIQUID WATER ON Co3O4/SrTiO3

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通讯作者: 陈斌, bchen63@163.com

A STUDY OF HYDROGEN PRODUCTION BY PHOTOCATALYTIC DECOMPOSITION OF LIQUID WATER ON Co₃O₄/SrTiO₃