| 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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| 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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