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Issue 48, 2018
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One-step in situ synthesis of BiOCl/(BiO)2CO3 composite photocatalysts with exposed high-energy {001} facets

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Abstract

Tailoring the chemical composition and morphology of a composite photocatalyst is a key way to achieve superior photocatalytic activity. In this work, a simple method has been developed to controllably prepare BiOCl/(BiO)2CO3 composite photocatalysts with exposed {001} facets. The chemical composition and morphology of the BiOCl/(BiO)2CO3 composites can be easily tuned by simply changing the ethanol/water volume ratio in the initial reaction system. The precursor of guanidine hydrochloride not only acts as the source of chloride and carbonate ions to form the BiOCl/(BiO)2CO3 composites, but also acts as the crystal growth inhibitor to control the growth of BiOCl nanosheets. The composites exhibit superior photocatalytic activity towards the degradation of rhodamine B under visible light irradiation, which can be ascribed to the type-II band alignment and intimate interfacial contacts between BiOCl nanosheets and (BiO)2CO3 nanoparticles, as well as their exposed high-energy facets. Both the formation mechanism of the BiOCl/(BiO)2CO3 composite and the photocatalytic degradation mechanism have been investigated and proposed.

Graphical abstract: One-step in situ synthesis of BiOCl/(BiO)2CO3 composite photocatalysts with exposed high-energy {001} facets

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Publication details

The article was received on 20 Sep 2018, accepted on 12 Nov 2018 and first published on 13 Nov 2018


Article type: Paper
DOI: 10.1039/C8CE01608A
Citation: CrystEngComm, 2018,20, 7838-7850
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    One-step in situ synthesis of BiOCl/(BiO)2CO3 composite photocatalysts with exposed high-energy {001} facets

    Y. Chen, Y. Zhou, Q. Dong and H. Ding, CrystEngComm, 2018, 20, 7838
    DOI: 10.1039/C8CE01608A

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