| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
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| Research Abstract |
Energetic nitrogen ion was implanted into a TiO2 catalyst in order to promote the photocatalytic activity under visible-light irradiation. N K-edge XANES and ELNES revealed two types of chemical state of nitrogen, depending on the concentration, where an O atom in TiO2 was replaced by N for the active photocatalyst, and that of substitutional NO2 for the inactive photocatalyst. We also estimated that the local nitrogen concentration effective for visible-light response was less than ca. 2 at%. It was also found that the photocatalytic active state was offset by the coexisting photocatalytic inactive state.
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