1996 Fiscal Year Final Research Report Summary
PHOTOCHEMICAL REACTION CONTROLLED BY PHOTOCHEMICAL DIODE AND ITS APPLICATION TO FIXATION OF CARBON DIOXIDE
| Project/Area Number |
07651008
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
工業物理化学
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| Research Institution | NARA NATIONAL COLLEGE OF TECHNOLOGY |
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Principal Investigator |
IZUMI Ikuichiro NARA NATIONAL COLLEGE OF TECHNOLOGY,CHEMICAL ENGINEERING,PROFESSOR, 化学工学科, 教授 (50043477)
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| Co-Investigator(Kenkyū-buntansha) |
KATAKURA Katsumi NARA NATIONAL COLLEGE OF TECHNOLOGY,CHEMICAL ENGINEERING,ASSOCIATE PROFESSOR, 化学工学科, 助教授 (80169466)
KYOKANE Jun NARA NATIONAL COLLEGE OF TECHNOLOGY,ELECTRICAL ENGINEERING,PROFESSOR, 電気工学科, 教授 (50043469)
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| Project Period (FY) |
1995 – 1996
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| Keywords | Photochemical diode / Light energy conversion / CO_2 fixation / Photocatalysis / Graphite intercalation compound |
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| Research Abstract |
The results of this research are summarized as follows.
1.The product-separable photochemical diode was fabricated by a thermal oxidation of thin Ti metal foil as photoactive wafers, by which the cell was completely divided into two compartments
2.A Xe-lamp illumination on a n-TiO_2 surface of photochemical diode in an aqueous electrolyte solution induced the production of hydrogen and oxygen on Ti metal and n-TiO_2 semiconductor, respectively, while in an aqueous solution of KHCO_3 the production of hydrocarbons such as methane and ethylene in addition to carbon monoxide on Ti metal. The hydrocarbon production was catalyzed by Cu ad-atoms deposited onto Ti metal.
3.The illumination on a p-n type photochemical diode of a n-TiO_2/p-Si wafer also induced a water decomposition and a reduction of carbon dioxide. However the quantum yield is almost the same as the yield with a Shottky-type photochemical diode.
4.An attempt for synthesis of graphite intercalation compounds with photocatalytic action was made electrochemically in an aqueous electrolyte solution.
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