Relationship Between Over-all Photosplitting of Water and Hydrogen Production from Photocatalytic System in the Presence of Sacrificial Agent

doi:10.7517/j.issn.1674-0475.2009.04.314

Abstract

Abstract: Although the study on the over-all photosplitting of water into H₂ and O₂ can be traced backed to ca.40 years ago,a real breakthrough has not been achieved in this field so far.Currently available published studies of H₂ evolution based on sacrificial systems by visible light at home and abroad may be meaningful in helping understand the reduction mechanism of hydrogen ion,but they are inapplicable to solving the problems emerging in over-all photosplitting of water.Thus the domestic academic circles involved in photocatalysis are reminded not to acknowledge that the achievements made in the researches of H₂ evolution via sacrificial systems as the progresses in the field of over-all photosplitting of water.It is suggested to summarize the unsuccessful practices in the past by taking into account both thermodynamic and kinetic requirements so as to establish a correct strategy for the study of the catalysts applicable to the over-all photosplitting of water.

Key words: photocatalysis, hydrogen production from over-all splitting of water, sacrificial agent, hydrogen ion reduction

CLC Number:

JIN Zhen-sheng. Relationship Between Over-all Photosplitting of Water and Hydrogen Production from Photocatalytic System in the Presence of Sacrificial Agent[J]. Imaging Science and Photochemistry, 2009, 27(4): 314-320.

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