2019 Fiscal Year Final Research Report
Preparation of precious metal-metal oxide interfaces by using metal oxide nanosheets
| Project/Area Number |
17H03461
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Catalyst/Resource chemical process
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| Research Institution | Doshisha University |
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Principal Investigator |
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| Project Period (FY) |
2017-04-01 – 2020-03-31
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| Keywords | 金属酸化物ナノシート / 貴金属 / 界面 / 触媒 |
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| Outline of Final Research Achievements |
Precious metals have been frequently utilized as catalytically active components. The precious metal loading in the catalysts should be reduced due to their high costs. The catalytic performance of precious metals can be modified by their deposition on the catalytic supports. The precious metals are strongly interacted with the support materials, which results in the improvement of the catalytic performance of precious metals. We have prepared metal oxide nanosheets using graphene oxide. In the present study, Pt nanoparticles were supported on graphene oxide and then the samples thus obtained were covered with metal oxide nanosheets. Finally, the samples were treated in air at high temperatures for the removal of graphene oxide. Pt metal particles in the samples were covered with metal oxide nanosheets. Thus, the catalysts showed the catalytic performance based on the Pt-metal oxide interface.
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| Free Research Field |
触媒化学
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| Academic Significance and Societal Importance of the Research Achievements |
代替エネルギーの開発，環境保全，ファインケミカル合成など様々な分野で触媒の高機能化が求められている．また元素戦略の観点から，貴金属使用量低減も求められている．限られた貴金属使用量で触媒を高機能化するには，活性点あたりの機能性向上が必要となる．その方法の1つに貴金属―酸化物界面の精密設計があると考えている．本研究で開発した触媒は，貴金属―酸化物界面を優先的に有するコア－シェル型触媒である．これらの触媒を利用すれば，触媒化学で古くから注目されている担体効果を明らかにでき，触媒化学の学術的発展に大きく貢献できると考えている．
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