SEMICONDUCTOR PHOTOCATALYST HAVING PERFORMANCE HEIGHTENED BY SURFACE MODIFICATION TREATMENT, METHOD FOR PRODUCTION THEREOF, AND HYDROGEN PRODUCTION METHOD USING THE PHOTOCATALYST

摘要

PROBLEM TO BE SOLVED: To provide a photocatalyst which can highly efficiently progress a photocatalytic reaction for reducing a redox medium and simultaneously producing oxygen.

SOLUTION: It is possible to markedly improve the activity of a photocatalytic reaction for reducing a redox medium and simultaneously producing oxygen by subjecting a visible-light-responsive photocatalyst, such as a tungsten compound, for forming oxygen from water in the presence of a reversible redox medium to a surface treatment with a solution containing at least one element M selected from the group consisting of an alkali metal, an alkali earth metal, silver, and nickel.

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