| Project/Area Number |
16K21402
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Energy-related chemistry
Nanomaterials chemistry
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
Kurashige Wataru 東京理科大学, 理学部第一部応用化学科, 講師 (50734589)
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| Research Collaborator |
Negishi Yuichi 東京理科大学, 理学部第一部応用化学科, 教授 (20332182)
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Keywords | 金属クラスター / 光触媒 / 助触媒 / 精密担持 / SMSI / 金クラスター / 水分解半導体光触媒 / 触媒 / ナノ材料 |
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| Outline of Final Research Achievements |
Water-splitting photocatalysts are generally composed of a semiconductor photocatalyst and metal nanoparticle cocatalyst that acts as the reaction site. Effective strategies to achieve highly active photocatalysts include improving the semiconductor photocatalyst and the cocatalyst. Herein, we report a study on a gold (Au) cluster-supported BaLa4Ti4O15 photocatalyst. In this study, first, the influence of refining Au cluster cocatalyst particles on the water-splitting reaction was clarified at an elementary reaction level. As a result, we found that suppressing the back reaction is an important factor to achieve high activity by refining the cocatalyst. Then, we formed a Cr2O3 shell on the Au cluster cocatalyst particles (Au25) to prevent the back reaction. The resulting water-splitting photocatalyst was highly active and stable, exhibiting activity about 19 times higher than that of Au25-BaLa4Ti4O15 without a Cr2O3 shell.
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