2018 Fiscal Year Final Research Report
Development of visible-light-active photocatalyst for environmental purification on the basis of interfacial excitation.
| Project/Area Number |
26410234
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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 |
Inorganic industrial materials
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Project Period (FY) |
2014-04-01 – 2019-03-31
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| Keywords | 光触媒 / 環境浄化 / 酸化チタン / 界面電荷移動 / 可視光 |
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| Outline of Final Research Achievements |
We have developed the highly efficient visible-light-sensitive photocatalyst on the basis of CuOx and Ti(IV) oxides nanoclusters grafted TiO2 by a facile wet chemical synthesis. Charge transfer process in this photocatalyst has been elucidated by spectroscopic analysis and probe microscope onto the thin film model structure. Based on these results, the choice of metal oxides with appropriate work function and its size of a few nanometers are very important for the development of efficient photocatalyst. Our photocatalyst is working as an anti-bacterial and deodorization building material even under indoor environment, which has been commercialized.
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| Free Research Field |
材料科学
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| Academic Significance and Societal Importance of the Research Achievements |
界面電荷移動遷移（IFCT）の直接的観察や、その励起が起こり得る酸化物の組み合わせ、そして、その原理を応用して高度な可視光応答型光触媒へと発展させたことは、学術的には意義が高い。学術的意義をまとめたPerspective Articleが2016年に米国化学会のJ. Phys. Chem. Lett.誌に発行され、その引用数は2019年6月時点で68に達している。
また、開発した光触媒は室内照明においても高度な抗菌・抗ウイルス特性が発現することを実証試験でも確認し、特許を2件成立させて内装建材として実用化も果たした。安全・安心な室内環境を提供できることから、社会的意義としても極めて高い。
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