2018 Fiscal Year Final Research Report
Fabrication of active photocatalysts in visible light using plasmas
Project/Area Number |
16K13917
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Plasma science
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Research Institution | Nagoya University |
Principal Investigator |
Kajita Shin 名古屋大学, 未来材料・システム研究所, 准教授 (00455297)
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Project Period (FY) |
2016-04-01 – 2019-03-31
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Keywords | ヘリウム / プラズマ / 光触媒 / ナノ構造 |
Outline of Final Research Achievements |
Helium plasma irradiation of metals such as tantalum, iron, niobium, and vanadium was performed at the plasma device NAGDIS-II. It was clarified that the fiberform nanostructure was formed by helium plasma irradiation in tantalum, iron, niobium and vanadium, and the plasma irradiation conditions (fluence, irradiation temperature, incident ion energy) were clarified. Photocatalytic activities were evaluated for various materials under irradiation with helium plasma. For titanium oxide and vanadium oxide, the improvement of hydrogen generation from methanol / ethanol aqueous solution was confirmed, and for niobium oxide, the improvement of the decomposition rate of methylene blue was confirmed for the material supporting platinum.
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Free Research Field |
プラズマ,光触媒
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Academic Significance and Societal Importance of the Research Achievements |
高効率で可視光応答性を有する光触媒材料の創成は重要な研究課題である。本研究ではヘリウムプラズマ照射を用いた材料のナノ構造化という現象を光触媒応用へと展開を図ることを目的として研究を行った。タンタル,鉄,ニオブ,バナジウム等光触媒に利用される金属において,ヘリウム照射により繊維状ナノ構造が形成されること,そのプラズマ照射条件(フルエンス,照射温度,入射イオンエネルギー)を明らかにし,光触媒活性を評価した。酸化チタン,酸化バナジウムにおいてはメタノール/エタノール水溶液からの水素生成の向上を確認し,酸化ニオブにおいてはプラチナを担持した材料においてメチレンブルーの分解速度の向上を確認した。
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