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

Paper ID Volume ID Publish Year Pages File Format Full-Text
50771 46813 2012 5 PDF Available
Title
Enhanced photocatalytic activity of bismuth-tungsten mixed oxides for oxidative decomposition of acetaldehyde under visible light irradiation
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.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► New bismuth-tungsten mixed oxide particles with W/Bi ratio of 1.0. ► The ratio is two-times higher than the stoichiometric ratio for Bi2WO6. ► Single-crystalline platelets with new crystal composition. ► Large specific surface area and narrow band gap of 2.70 eV. ► Enhanced visible-light-responsive photoactivity for acetaldehyde decomposition.

Keywords
Photocatalysis; Bi2WO6; Aurivillius phase; Nanoplate; Visible light
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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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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 20, 5 April 2012, Pages 12–16
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us