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High photocatalytic activity of lanthanum doped Bi2MoO6 nanosheets with exposed (0 0 1) facets

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Abstract

Bi2MoO6 nanosheets with the different lanthanum contents were prepared by the facile hydrothermal method. The samples were characterized by X-ray diffraction, field emission scanning electron microscopy, high resolution transmission electron microscopy, X-ray photoelectron spectroscopy, Brunauer–Emmett–Teller surface area, UV–Visible diffuse reflectance spectroscopy, and photoluminescence emission spectra. Results indicated that Bi2MoO6 nanosheets selectively exposed (0 0 1) facets as the main external surfaces with the manifold of La content. When the molar ratio of La:Bi is 0.5%, the obtained Bi2MoO6 sample exhibited the highest catalytic performance for RhB degradation under the visible light, which can be attributed to the synergic effect of optimum bandgap and the effectively separation of photogenerated electron–hole. The possible photolytic degradation mechanism was further discussed and the photogenerated holes (h+) was found to be the major active species.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Nos.21507014, 21663006), the Natural Science Foundation of Guangxi Province (No.2014GXNSFBA118036), and the Program for Science and Technology Development Plan of Nanning (No. 20163146).

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Authors and Affiliations

  1. Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology, School of Chemistry and Chemical Engineering, Guangxi University, 100# Daxue Road, Nanning, 530004, Guangxi, People’s Republic of China

    Pan Zhang, Yunan Yi, Chuxuan Yu, Wei Li, Peisi Liao, Renwei Tian, Mei Zhou, Yifan Zhou, Bin Li, Minguang Fan & Lihui Dong

  2. Jiangsu Key Laboratory of Vehicle Emissions Control, Center of Modern Analysis, Nanjing University, Nanning, 210093, People’s Republic of China

    Lihui Dong

  3. Guangxi Colleges and Universities Key Laboratory of Applied Chemistry Technology and Resource Development, Guangxi University, Nanning, 530004, People’s Republic of China

    Bin Li

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  1. Pan Zhang
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  2. Yunan Yi
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  3. Chuxuan Yu
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  4. Wei Li
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Correspondence to Bin Li or Lihui Dong.

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Zhang, P., Yi, Y., Yu, C. et al. High photocatalytic activity of lanthanum doped Bi2MoO6 nanosheets with exposed (0 0 1) facets. J Mater Sci: Mater Electron 29, 8617–8629 (2018). https://doi.org/10.1007/s10854-018-8876-8

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