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Fabrication of ultrathin-MoS2/Ag/AgBr composite with enhanced photocatalytic activity

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Abstract

The MoS2/Ag/AgBr composite with ultrathin-MoS2 layers was prepared by the methods of ultrasonic liquid exfoliation and ion exchange. The composition and micromorphology of ultrathin-MoS2/Ag/AgBr were detected by XRD, EDS, SEM and TEM in detail. The element mapping showed that the samples were well-distributed. The MoS2 in samples and the number of plies were detected by Raman spectra specifically. The results indicated that the photocatalytic performance of the as-prepared samples would increase by 50% when the average thickness of MoS2 was about 4 nm. The enhanced photocatalytic performance of ultrathin-MoS2/Ag/AgBr composite is attributed to the modified conduction band of MoS2 by reducing the layers of MoS2 to fit the potential of O2/O·−2. In particular, this work would expand the scope of application of MoS2 in photodegradation.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (11674336, 51522105 and 11374312).

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Authors and Affiliations

  1. Department of Physics, East China Normal University, 200241, Shanghai, China

    Fengyuan Zhang, Yue Yin, Feng Li, Dongmei Jiang, Jie Wang & Qingfeng Zhan

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  1. Fengyuan Zhang
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  2. Yue Yin
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  3. Feng Li
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  4. Dongmei Jiang
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  5. Jie Wang
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  6. Qingfeng Zhan
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Correspondence to Dongmei Jiang.

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Zhang, F., Yin, Y., Li, F. et al. Fabrication of ultrathin-MoS2/Ag/AgBr composite with enhanced photocatalytic activity. J Mater Sci 55, 2166–2175 (2020). https://doi.org/10.1007/s10853-019-04089-0

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  • DOI: https://doi.org/10.1007/s10853-019-04089-0

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