Research on the promotion of photochemical reactions utilizing magnetic field
Project/Area Number |
25620150
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Research Category |
Grant-in-Aid for Challenging Exploratory Research
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Allocation Type | Multi-year Fund |
Research Field |
Energy-related chemistry
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Research Institution | Kyoto University |
Principal Investigator |
OKUMURA Hideyuki 京都大学, エネルギー科学研究科, 准教授 (80362573)
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Co-Investigator(Renkei-kenkyūsha) |
ISHIHARA Keiichi 京都大学, 大学院エネルギー科学研究科, 教授 (30184550)
YAMASUE Eiji 京都大学, 大学院エネルギー科学研究科, 助教 (90324673)
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Project Period (FY) |
2013-04-01 – 2016-03-31
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Project Status |
Completed (Fiscal Year 2015)
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Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000)
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Keywords | 磁場効果 / 不均一系光触媒 / 溶存酸素 / 表面近傍静電ポテンシャル / 現象論的OANSモデル / 磁気対流 / 表面近傍短範囲拡散 / 再現性 / 不均一系光触媒反応 / 磁場効果(MFE) / 溶存酸素(DO) / OANSモデル / その場観察 / 温度依存性 / 磁場吸着 / 温度依存 / 酸化亜鉛 / 光触媒 / メチレンブルー溶液 |
Outline of Final Research Achievements |
Any substance or phenomenon/reaction involves magnetic response. Magnetic Field Effect (MFE) is known and theorized for homogeneous reactions based on highly reproducible data, however, only limited report for heterogeneous systems with interface, particularly for photocatalytic reactions. In this study, various MFE-involved parameters are investigated through decoloring dye solutions by UV irradiation on ZnO or TiO2 powder under magnetic field. Highly reproducible MFEs with 2% errors are confirmed, where MFEs depend on magnetic field strength, solution concentration, dissolved oxygen (DO) concentration, and powder surface state including gas adsorption. Accordingly, a phenomenological OANS (oxygen-flow accelerated near surface) model is proposed, with its validity indicated, where an effective magnetic force is exerted on DO due to electrostatic potential gradient at the solid-liquid interface, inducing short-range diffusion and convection, which leads to manifestation of MFE.
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Report
(4 results)
Research Products
(18 results)
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[Presentation] 光触媒反応磁場効果モデルの検討2015
Author(s)
奥村英之、遠藤晋、山末英嗣、石原慶一
Organizer
2015年第62回応用物理学会春季学術講演会
Place of Presentation
東海大学湘南キャンパス
Year and Date
2015-03-11 – 2015-03-14
Related Report
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