Enhanced photocatalytic activity of bismuth-tungsten mixed oxides for oxidative decomposition of acetaldehyde under visible light irradiation
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概要
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Russelite bismuth tungstate (Bi2WO6) flake-ball particles prepared by a hydrothermal reaction method have been reported to be visible-light-responsive photocatalysts for mineralization of organic compounds. Here, we report new bismuth-tungsten mixed oxide particles with a tungsten-to-bismuth ratio (W/Bi ratio) in feed of 1.0, which is two-times higher than the stoichiometric ratio of Bi2WO6 (W/Bi = 0.50). Compared to the conventional Bi2WO6 flake-ball particles, the tungsten-rich particles exhibited a narrow band gap (2.70 eV), large specific surface area due to the rectangular platelet nanostructure, and high level of photocatalytic activity for oxidative decomposition of acetaldehyde.
- 2012-04-05
著者
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Ohtani Bunsho
Hokkaido Univ. Sapporo Jpn
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Ohtani Bunsho
Graduate School Of Environmental Science Hokkaido University
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Nogami Kohei
Graduate School Of Environmental Science Hokkaido University
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Amano Fumiaki
Catalysis Research Center Hokkaido University
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