Abstract
A highly active photocatalyst, silver loaded mesoporous WO(3), was successfully synthesized by an ultrasound assisted insertion method. The photodegradation of a common air pollutant acetaldehyde was adopted to evaluate the photocatalytic performance of the as-prepared sample under visible-light irradiation. The photocatalytic activity was about three and six times higher than that of pure mesoporous WO(3) and nitrogen-doped TiO(2), respectively. The photocatalytic mechanism was investigated to understand the much enhanced photocatalytic activity, which was mainly attributed to the largely improved electron-hole separation in the Ag-WO(3) heterojunction.
Copyright 2010 Elsevier B.V. All rights reserved.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Acetaldehyde / chemistry*
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Acetaldehyde / radiation effects
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Air Pollutants, Occupational / chemistry*
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Air Pollutants, Occupational / radiation effects
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Carbon Dioxide / chemistry
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Carbon Dioxide / metabolism
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Catalysis
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Light*
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Microscopy, Electron, Transmission
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Nanoparticles
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Oxidation-Reduction
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Oxides / chemistry*
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Oxides / radiation effects
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Photochemistry
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Porosity
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Silver Compounds / chemistry*
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Silver Compounds / radiation effects
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Titanium / chemistry
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Tungsten / chemistry*
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Tungsten / radiation effects
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X-Ray Diffraction
Substances
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Air Pollutants, Occupational
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Oxides
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Silver Compounds
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Carbon Dioxide
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titanium dioxide
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disilver oxide
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tungsten oxide
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Titanium
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Acetaldehyde
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Tungsten