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Journal articles
New Insights into Bi2WO6 Properties as a Visible-Light Photocatalyst
Abstract : Bismuth tungstate has attractive photocatalytic properties under visible light. A better understanding of the origin of that good activity should allow its control and its optimization. An improved photocatalytic activity to different pollutants was obtained using bismuth-based oxide obtained by microwave-assisted synthesis combined with the addition of sodium dodecylsulfate as a size tailoring agent. It is shown using electron paramagnetic resonance that bismuth tungstate is able to generate hydroxyl radicals in aqueous aerated solution, but no superoxide radical anions are formed. The catalytic efficiency relative to TiO2 could be associated to differences in the number of excitons generated, to their lifetimes as holes and electrons in the semiconductor, and to valence and conduction band positions.
https://hal.sorbonne-universite.fr/hal-00917872
Contributor : Lcmcp Hal <>
Submitted on : Thursday, December 12, 2013 - 3:48:26 PM
Last modification on : Saturday, September 19, 2020 - 4:35:51 AM
Contributor : Lcmcp Hal <>
Submitted on : Thursday, December 12, 2013 - 3:48:26 PM
Last modification on : Saturday, September 19, 2020 - 4:35:51 AM