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Issue 16, 2018
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Synthesis of a novel one-dimensional BiOBr–Bi4O5Br2 heterostructure with a high quality interface and its enhanced visible-light photocatalytic activity

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Abstract

Herein, a novel rod-like BiOBr–Bi4O5Br2 heterostructure with a high quality interface was synthesized by calcining a BiOBr precursor in air at 450 °C for 2 h. Bi4O5Br2 nanosheets grew on the rod-like BiOBr made of nanosheets. The content of the loaded Bi4O5Br2 can be controlled by adjusting the concentration of glucose during the preparation of BiOBr precursors. The photocatalytic activity of the as-made products was evaluated by the degradation of rhodamine B (RhB). The results show that the BiOBr–Bi4O5Br2 heterostructure displays outstanding photocatalytic activity as compared to the pure phase BiOBr and Bi4O5Br2, and 100% RhB (20 mg L−1) can be degraded within 5/10 min under solar/visible-light irradiation. This enhanced photocatalytic performance is ascribed to the synergistic effect of the suitable band alignment of BiOBr and Bi4O5Br2 and the formation of a high quality interface between BiOBr and Bi4O5Br2. Radical scavenger experiments prove that the photogenerated holes and ˙O2 play a key role in the photodegradation process. This study would offer a simple route for the design and fabrication of one-dimensional junction structures with high interface quality for photocatalytic applications.

Graphical abstract: Synthesis of a novel one-dimensional BiOBr–Bi4O5Br2 heterostructure with a high quality interface and its enhanced visible-light photocatalytic activity

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Publication details

The article was received on 31 Jan 2018, accepted on 15 Mar 2018 and first published on 23 Mar 2018


Article type: Paper
DOI: 10.1039/C8CE00157J
Citation: CrystEngComm, 2018,20, 2292-2298
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    Synthesis of a novel one-dimensional BiOBr–Bi4O5Br2 heterostructure with a high quality interface and its enhanced visible-light photocatalytic activity

    J. Xu, Y. Mao, T. Liu and Y. Peng, CrystEngComm, 2018, 20, 2292
    DOI: 10.1039/C8CE00157J

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