2022 Fiscal Year Final Research Report
The effect of Au for selective photo-oxidation of Au-supported metal oxides for biomass conversion
| Project/Area Number |
20K15322
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| Research Category |
Grant-in-Aid for Early-Career Scientists
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| Allocation Type | Multi-year Fund |
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| Review Section |
Basic Section 34030:Green sustainable chemistry and environmental chemistry-related
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| Research Institution | Yamaguchi University |
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Principal Investigator |
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| Project Period (FY) |
2020-04-01 – 2023-03-31
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| Keywords | 5-ヒドロキシメチルフルフラール / 2,5-ジホルミルフラン / フラン-2,5-ジカルボン酸 / バイオマス / 光触媒 / 酸化ニオブ / Auナノ粒子 / プラズモン |
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| Outline of Final Research Achievements |
Oxidation of 5-Hydroxymethylfurfural (HMF), especially the hydroxymethyl (-CH2OH) moiety, is vital for synthesizing furan-2,5-dicarboxylic acid (FDCA). Therefore, we focused on selective photo-oxidation of HMF to 2,5-diformylfuran (DFF). Various kinds of metal oxides have been screened in the photocatalytic reaction and the metal nanoparticles were deposited on the metal oxides aiming to improve the photocatalytic activity. Usually, the oxidation of HMF to DFF needs a high temperature. However, the orthorhombic-phase Nb2O5 (Nb2O5-T) supported Au nanoparticles (NPs) catalyst showed extremely high selectivity (92%) for the photo-oxidation of HMF to DFF at room temperature. In addition to achieving the selective oxidation of HMF to DFF with high selectivity, Au/Nb2O5-T also showed high activity of FDCA oxidation from HMF under light irradiation at room temperature with base condition.
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| Free Research Field |
Auナノ粒子
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| Academic Significance and Societal Importance of the Research Achievements |
如何に少ない投入エネルギーでバイオマスから高付加価値材料への変換を実現するかという技術的・学術的な問いは, 持続可能な社会の実現のために避けて通れない重要な課題である. AuとNb2O5の光触媒作用を利用した触媒の高機能化によって, バイオマスから高機能プラスチック原料FDCAの製造がより高効率・低環境負荷で可能となれば, 持続可能な社会の実現に大きく寄与できる. 今後はNb2O5で得られた知見を基に種々のAu/MOxに展開することで, これまで困難であった選択的反応を実現し, Au/MOx光触媒特性の有用性を示すことができる.
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