Field
     Chemistry, Clean energy technology

Keywords
     Photocatalyst, Oxidation-reduction (REDOX), Fe Compounds, Water decomposition

Advantages
As an effect of the invention, a Pt/SrTiO3:Rh-WO3 system, Pt/SrTiO3:. A Rh-BiVO4 system. And the quantum yield of appearance [ in / in Z-scheme type visible light water perfect decomposition type catalyst system constituted using the Fe compound which forms the catalyst of a Pt/SrTiO3:Rh-Bi2MoO6 system, and a Fe3+/Fe2+ redox system / 440 nm ], It reaches to 0.2%, 0.3%, and 0.2%, respectively, and can mention that the perfect decomposition reaction to hydrogen and oxygen of efficient water under a visible light exposure has been built.

Abstracts
To provide a Z-scheme type visible light active photocatalyst system using Fe<SP>3+</SP>/Fe<SP>2+</SP>redox system..The Z-scheme type visible light active photocatalyst system comprises a combination photocatalyst system composed of at least one oxygen forming photocatalyst selected from a WO<SB>3</SB>system, a BiVO<SB>4</SB>system and a Bi<SB>2</SB>MoO<SB>6</SB>system and a hydrogen forming photocatalyst of Pt/SrTiO<SB>3</SB>:Rh. An Fe compound for forming the Fe<SP>3+</SP>/Fe<SP>2+</SP>redox system constituting the Z-scheme type visible light active photocatalyst system is allowed to be present in the combination photocatalyst system.

    

Inventors
Prof. Akihiko Kudo, et al.


Patent information
(APPLICATION NUMBER, FILING DATE)JP2004-008746（Jan. 16, 2004） 
(PUBLICATION NUMBER, PUBLICATION DATE)JP2005-199187（Jul. 28, 2005)


Internal file number
T2003-022
 

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