1987 Fiscal Year Final Research Report Summary
Study on the photoelectrolysis of water by the oxide film semiconductor electrodes prepared by thes sol-gel method
| Project/Area Number |
61470069
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
無機工業化学
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| Research Institution | Mie University |
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Principal Investigator |
YOKO Toshinobu Department of Industrial Chemistry, Faculty of Engineering Mie University, Associate Professor, 工学部, 助教授 (90158353)
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| Project Period (FY) |
1986 – 1987
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| Keywords | Semiconducting oxide film / Sol-gel method / TiO_2 / SrTiO_3 / BaTiO_3 / Fe_2O_3 / Surface state / 光電流 / インピーダンス解析 |
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| Research Abstract |
Preparation of several semiconducting oxide films of TiO_2, SrTiO_3, BaTiO_3 and Fe_2O_3 has been attempted using a sol-gel method which enables us to obtain a large size of homoheneous coating film. TiO_2 films thus obtained were found to show photocurrent as high as a single crystal. This was attributed to its large specific surface area which is inherent in gel state. These films also have many surface states due to its large surface area. Owing to this, it was revealed that the surface states mediate the charge transfer for evolving oxygen gas and the formation of H_2O_2 is significantly related to anodic reaction. SrTiO_3 and BaTiO_3 did not show photocurrent so high as TiO_2. Fe_2O_3 had visible light response ( >580 nm).
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