1998 Fiscal Year Final Research Report Summary
PHOTOCHEMICAL REACTION CONTROLLED BY PHOTOCHEMICAL DIODE AND ITS APPLICATION TO FIXATION OF CARBON DIOXIDE
| Project/Area Number |
09650915
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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, 物質化学工学科, 教授 (50043477)
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| Co-Investigator(Kenkyū-buntansha) |
ISHIMAU Hirohito NARA NATIONAL COLLEGE OF TECHNOLOGY,CHEMICAL ENGINEERING, ASSISTANT, 化学工学科, 助手 (70270311)
KYOKANE Jun NARA NATIONAL COLLEGE OF TECHNOLOGY,ELECTRICAL ENGINEERING, PROFESSOR, 電気工学科, 教授 (50043469)
KATAKURA Katsumi NARA NATIONAL COLLEGE OF TECHNOLOGY,CHEMICAL ENGINEEING, ASSOCIATE PROFESSOR, 化学工学科, 助教授 (80169466)
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| Project Period (FY) |
1997 – 1998
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| Keywords | Photochemical diode / Light energy conversion / CO_2fixation / 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 composed of n-TiO_2 /Ti was manifested as photoactive wafers. A Xe-lamp illumination on a n-TiO_2 surface of photochemical diode in an aqueous solution of KHCO_8 induced the production of hydrogen and oxygen en Ti metal and n-Ti0_2 semiconductor, respectively, while by a deposition of Cu onto Ti metal hydrocarbons such as methane and ethylene were produced in addition to carbon monoxide on Cu metal.
(2) We found the selective reduction of CO_2 using the photochemical diode of the system n-TiO_2/Ti/Cu-Ag with various atomic ratios of Cu to Ag on the surface of Ti. By electrodeposition of a small amount of Ag onto Ti/Cu surface, ethylene was a predominant reduction product from CO_2 rather than methane.
(3) We also found that graphite intercalation compounds with copper and iron chlorides, were sensitized by light illumination of a Xe-lamp, generrating photocurrent and photovoltage.
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