| Budget Amount *help |
¥23,270,000 (Direct Cost: ¥17,900,000、Indirect Cost: ¥5,370,000)
Fiscal Year 2019: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2018: ¥9,750,000 (Direct Cost: ¥7,500,000、Indirect Cost: ¥2,250,000)
Fiscal Year 2017: ¥11,570,000 (Direct Cost: ¥8,900,000、Indirect Cost: ¥2,670,000)
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| Outline of Final Research Achievements |
Many efforts have been devoted to synthesis of photocatalysts that respond to visible light. In previous study, Au nanoparticles supported on metal oxide have been applied as a new type of photocatalysts responding to visible light. We found that action spectra in photocatalytic reactions over Au/metal oxide were in good agreement with their absorption spectra, which suggested that photocatalytic reactions were induced by photoabsorption due to surface plasmon resonance (SPR) of the supported Au nanoparticles. In this study, we reported (1) the change in the shape of Au particles loaded on TiO2 and the redshift of SPR of the Au particles and (2) the selective oxidation of alcohols under irradiation of visible light in aqueous suspensions of Au/TiO2 before and after post-calcination. In addition, we examined H2 evolution over Au/MOx (CeO2:Sr and Ta2O5) without a Pt cocatalyst under visible light irradiation and found that Au/MOx produced H2 without the aid of a cocatalyst.
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