2017 Fiscal Year Final Research Report
Rational Control for the Reactivity of Low Overpotential Hydrogen-evolving Catalysts and their Application to Water-splitting Molecular Systems
| Project/Area Number |
16K17879
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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 |
Inorganic chemistry
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| Research Institution | Kyushu University |
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Principal Investigator |
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| Project Period (FY) |
2016-04-01 – 2018-03-31
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| Keywords | 人工光合成 / 水素発生 / 低過電圧 / ニッケル錯体 / コバルト錯体 / N-ヘテロ環状カルベン / 反応機構解析 |
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| Outline of Final Research Achievements |
In this study, we focused on the rational control for the activity of molecular catalysts accelerating hydrogen evolution from water via a metal-centered or ligand-centered proton-coupled electron transfer (PCET) process.
As for a Co-NHC complex promoting metal-centered PCET, we realized an efficient photochemical system whose activity is 30 times higher in hydrogen evolution from water by tuning the effect of co-existing anion species and the redox potential of an electron realay employed.
On the other hand, a nickel complex was found to promote hydrogen evolution from water with an overpotential of 330-400 mV via a ligand-centered PCET. Furthermore, the reaction mechanism was successfully clarified in detail.
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| Free Research Field |
錯体化学
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