Development of Visible-Light-Driven TiO2 and SrTiO3 Photocatalysts Doped with Metal Cations for H2 or O2 Evolution
| Autor: | Akihiko Kudo, Ryo Niishiro |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Aqueous solution
Materials science Inorganic chemistry Oxygen evolution chemistry.chemical_element Condensed Matter Physics Photochemistry Atomic and Molecular Physics and Optics Rhodium Metal chemistry Rutile visual_art Photocatalysis visual_art.visual_art_medium Water splitting General Materials Science Visible spectrum |
| Zdroj: | Solid State Phenomena. 162:29-40 |
| ISSN: | 1662-9779 |
| Popis: | This review paper represents photocatalytic properties of metal cation-doped TiO2 (rutile) and SrTiO3 photocatalysts for O2 evolution from an aqueous silver nitrate solution and H2 evolution from an aqueous methanol solution under visible light irradiation. Photocatalytic activities for the O2 evolution of Cr/Sb and Rh/Sb-codoped TiO2 are strongly dependent on the codoping ratio and the amount of doped chromium and rhodium. The codopant controls the oxidation number of doped chromium and rhodium. Rh-doped SrTiO3 in which the doped Rh species possesses a reversible redox property is active for the H2 evolution reaction under visible light irradiation. Overall water splitting under visible light irradiation proceeds with Z-scheme photocatalyst systems consisting of the Rh-doped SrTiO3 as a H2 evolution photocatalyst combined with BiVO4 as an O2 evolution photocatalyst and an Fe3+/Fe2+ electron mediator. |
| Databáze: | OpenAIRE |
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