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Enhanced photocatalytic activity of bismuth-tungsten mixed oxides for oxidative decomposition of acetaldehyde under visible light irradiation

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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)

Submitter: 大谷 文章

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