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Enhanced photocatalytic activity of bismuth-tungsten mixed oxides for oxidative decomposition of acetaldehyde under visible light irradiation
Title: | Enhanced photocatalytic activity of bismuth-tungsten mixed oxides for oxidative decomposition of acetaldehyde under visible light irradiation |
Authors: | Amano, Fumiaki Browse this author →KAKEN DB | Nogami, Kohei Browse this author | Ohtani, Bunsho Browse this author →KAKEN DB |
Keywords: | Photocatalysis | Bi2WO6 | Aurivillius phase | Nanoplate | Visible light |
Issue Date: | 5-Apr-2012 |
Publisher: | Elsevier B.V. |
Journal Title: | Catalysis Communications |
Volume: | 20 |
Start Page: | 12 |
End Page: | 16 |
Publisher DOI: | 10.1016/j.catcom.2011.12.038 |
Abstract: | 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. |
Type: | article (author version) |
URI: | http://hdl.handle.net/2115/49091 |
Appears in Collections: | 触媒科学研究所 (Institute for Catalysis) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 大谷 文章
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