| Project/Area Number |
16K06862
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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 |
Catalyst/Resource chemical process
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| Research Institution | Shinshu University (2018)
The University of Tokyo (2016-2017) |
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Principal Investigator |
Takata Tsuyoshi 信州大学, 先鋭領域融合研究群環境・エネルギー材料科学研究所, 特任教授 (80334499)
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| Project Period (FY) |
2016-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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| Keywords | 光触媒 / 水分解 / 太陽光 / 水素製造 / 助触媒 / 半導体 / 太陽光エネルギー / 光電着法 / 耐久性 / 反応容器設計 / 酸窒化物 / 触媒調製 / 太陽光利用 / 反応器設計 / 複合体 / 触媒・化学プロセス / 水素 / エネルギー変換 |
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| Outline of Final Research Achievements |
In this research project, photocatalytic water splitting system to efficiently utilize solar energy has been studied. The first approach is to enhance quantum efficiency of water splitting photocatalysts developed previously to un upper limit level. In fact, one of the wide-gap oxide photocatalyst has been upgraded to enable near 100% quantum efficiency in water splitting. Another target was to perform overall water splitting on some photocatalysts with narrow bandgap while this target was not sufficiently achieved. A photocatalytic reactor to produce solar hydrogen was newly designed. Quite novel, simple and compact structure was created, which is easily extensible to practical application.
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| Academic Significance and Societal Importance of the Research Achievements |
光触媒自身の開発においては、バンドギャップが大きく紫外光しか利用できないが、その範囲では上限レベルまで反応効率を上げることができた。水分解反応はその素過程の中で酸素生成が4電子反応あるために困難と考えられている。そのような反応において量子収率をほぼ100％に向上させ、そのために必要な触媒の構造と機能を明らかにしたことは当該研究者間でも関心の高い結果となる。
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