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BiOCl Nanosheets with Controlled Exposed Facets and Improved Photocatalytic Activity

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Abstract

Bismuth oxychloride (BiOCl) single crystal nanosheets with controllable and highly exposed {001} facets have been synthesized via hydrolytic methods without any surfactants. The BiOCl nanosheets had a thickness from 30 to 120 nm and were synthesized by tuning evaporation temperature, while the ratio of {001} facets varies from 98 to 49%. A growth rate in {001} facets agrees with the Boltzmann function and a possible growth mechanism has been proposed. Moreover, the existence of highly exposed {001} facets could gradually narrow the band gap of BiOCl nanosheets. This work provides a new insight for controllable synthesis of layered materials with different facets, and provides a flexible strategy for exploring and enhancing photoactivity based on the facets engineering.

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Acknowledgements

We gratefully acknowledge the helpful and informative discussions with Dr. Yuan Yuan and Mr. Zachary H. Hood. We also thank the Fundamental Research Funds for the Central Universities (No.106112015CDJXY130010) and the National Natural Science Foundation of China (No. 51302329) for financial support.

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Correspondence to Sujuan Wu.

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Yi Jiang, Jianguo Sun have contributed equally to this work.

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Jiang, Y., Sun, J. & Wu, S. BiOCl Nanosheets with Controlled Exposed Facets and Improved Photocatalytic Activity. Catal Lett 147, 2006–2012 (2017). https://doi.org/10.1007/s10562-017-2118-1

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