Abstract
Bismuth oxychloride (BiOCl) with tunable structures and morphologies were successfully synthesized through a facile solvothermal method in water–methanol solution. Size and shape of BiOCl could be effectively tuned by adjusting the volume fraction of water in water–methanol solution. With the increasing water content, BiOCl grows along the c-axis [001] orientation, and the exposure of {001} facets also increases. In the case of 10 % water, dispersed BiOCl nanoplates with the size of 200 nm and the thickness of 40 nm were obtained instead of microspheres as obtained in pure methanol. These BiOCl nanoplates showed higher photocatalytic activity toward methyl orange (MO) than BiOCl microspheres and higher degradation activity for rhodamine B (RhB) than P25. The excellent photocatalytic activity of BiOCl nanoplates could be mainly attributed to its effective separation of electron–hole pairs, increased exposure of {001} facets, and reductions in size and thickness. And BiOCl nanoplates prepared with 15 % water exhibit promising oxygen reduction reaction performance in alkaline electrolyte (KOH) due to the increased exposure of {001} facets.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (Grant No. 51372113), the Specially Appointed Professors by Universities in Jiangsu Province (SPUJP-2012, China), the Program for New Century Excellent Talents in University (NCET-12-0733, China), the scientific research foundation for the Returned Overseas Students, and Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).
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Xu, Y., Hu, X., Zhu, H. et al. Insights into BiOCl with tunable nanostructures and their photocatalytic and electrochemical activities. J Mater Sci 51, 4342–4348 (2016). https://doi.org/10.1007/s10853-016-9745-6
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DOI: https://doi.org/10.1007/s10853-016-9745-6