2016 Fiscal Year Final Research Report
Control of Potential and Wavelength, Assist by Photofuel Cell, and Spectroscopic Monitoring of Dynamic Process of Photoreduciton of Carbon Dioxide
| Project/Area Number |
26410204
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Energy-related chemistry
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| Research Institution | Chiba University |
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Principal Investigator |
Izumi Yasuo 千葉大学, 大学院理学研究科, 准教授 (50251666)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 二酸化炭素 / 水素 / 酸素欠陥 / EXAFS / FTIR / 太陽電池 / 起電力 / 開放電圧 |
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| Outline of Final Research Achievements |
Pd/TiO2 was the most active for high-pressure CO2 photoconversion into fuels. While using CO2 + H2, the total photogeneration rates of C-containing products were maximum at CO2 pressure of 0.12 MPa and H2 pressure of 0.28 MPa, using CO2 + moisture the generation rates followed the Langmuir-type rate dependence and the reaction order of methane formation was 0.39. Competitive adsorption occurred under former condition in contrast that sites were effective separated for photo-oxidation of water (TiO2, etc) and photo-reduction of CO2 (Pd, etc) under latter condition.
Associated with this, solar cell for use of photocatalysts on both electrodes and water as a medium was investigated. When the cathode (e.g. BiOCl) was irradiated from back side, leakage currents were suppressed and the open-circuit voltage was increased to 1.91 V per cell.
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| Free Research Field |
触媒化学、X線分光、環境化学
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