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Issue 20, 2015
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Controlled synthesis of thin BiOCl nanosheets with exposed {001} facets and enhanced photocatalytic activities

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Abstract

Thin BiOCl nanosheets with exposed {001} facets were synthesized by controlling the concentration of hydrochloric acid (HCl). The thickness of the BiOCl nanosheets with exposed {001} facets changed from 7–200 nm with an increase in HCl concentration. The thinnest BiOCl nanosheet with a thickness of 7–15 nm was obtained when the concentration of HCl was 8 mmol L−1. The photocatalytic activity of these thin nanosheets with exposed {001} facets is enhanced gradually with a decrease in the thickness of the nanosheets, which is ascribed to the shorter and shorter distance provided for photogenerated electron–hole pairs to be rapidly separated along the [001] orientation driven by the self-induced internal static electric fields. Moreover, thin BiOCl nanosheets with a large surface area provide more active sites for dye adsorption, and thus enhance the dye photosensitization degradation of pollutants. This work provides a promising method for preparing other metal oxyhalide materials with controllable nanosheet thickness.

Graphical abstract: Controlled synthesis of thin BiOCl nanosheets with exposed {001} facets and enhanced photocatalytic activities

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Publication details

The article was received on 07 Feb 2015, accepted on 28 Mar 2015 and first published on 31 Mar 2015


Article type: Paper
DOI: 10.1039/C5CE00289C
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CrystEngComm, 2015,17, 3845-3851

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    Controlled synthesis of thin BiOCl nanosheets with exposed {001} facets and enhanced photocatalytic activities

    Y. Peng, D. Wang, H. Zhou and A. Xu, CrystEngComm, 2015, 17, 3845
    DOI: 10.1039/C5CE00289C

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