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Issue 23, 2015
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Crystallographic dependence of photocatalytic activity of WO3 thin films prepared by molecular beam epitaxy

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Abstract

We investigated the impact of crystallographic orientation on the photocatalytic activity of single crystalline WO3 thin films prepared by molecular beam epitaxy on the photodegradation of rhodamine B (RhB). A clear effect is observed, with (111) being the most reactive surface, followed by (110) and (001). Photoreactivity is directly correlated with the surface free energy determined by density functional theory calculations. The RhB photodegradation mechanism is found to involve hydroxyl radicals in solution formed from photo-generated holes and differs from previous studies performed on nanoparticles and composites.

Graphical abstract: Crystallographic dependence of photocatalytic activity of WO3 thin films prepared by molecular beam epitaxy

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Publication details

The article was received on 07 Mar 2015, accepted on 01 May 2015 and first published on 11 May 2015


Article type: Paper
DOI: 10.1039/C5CP01344E
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Citation: Phys. Chem. Chem. Phys., 2015,17, 15119-15123

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    Crystallographic dependence of photocatalytic activity of WO3 thin films prepared by molecular beam epitaxy

    G. Li, T. Varga, P. Yan, Z. Wang, C. Wang, S. A. Chambers and Y. Du, Phys. Chem. Chem. Phys., 2015, 17, 15119
    DOI: 10.1039/C5CP01344E

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