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Construction of ternary heterojunction AgI/C-MoS2 nanosheets with enhanced visible-light photocatalytic property and self-cleaning performance

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Abstract

Carbon-molybdenum disulfide (C-MoS2) ultrathin nanosheets were prepared by a hydrothermal process, and then AgI/C-MoS2 were synthesized via an in-situ deposition method. This ternary heterojunction composite exhibited better photocatalytic activity compared with those of one-component (pristine MoS2) and bicomponent (AgI/MoS2 and C-MoS2) materials for the degradation of organic dyes under the visible-light irradiation. In particular, by comparing with AgI/MoS2, the significant role of conductive amorphous carbon in AgI/C-MoS2 in enhancing the charge transfer during the photocatalytic degradation of dyes was first confirmed by photocurrent response and electrochemical impedance spectroscopy (EIS). A possible photocatalytic mechanism was proposed based on the capture experiment results. Furthermore, a straightforward and interesting way had been applied to test the recycled/newly-prepared AgI/C-MoS2 composite for revealing its distinctive self-cleaning performance and recyclability characteristic besides its good photocatalytic activity. This work could provide a reference for the design of other new ternary heterojunction composite materials with special structures and properties.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (Grant No. 2187020207) and the Laboratory Open Foundation of Qufu Normal University (No. sk201722).

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Authors and Affiliations

  1. School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, 273165, China

    Yan Du, Ziwen Niu, Tingjiang Yan, Kunlei Zhu, Yang Yu & Zhihong Jing

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  1. Yan Du
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  2. Ziwen Niu
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  3. Tingjiang Yan
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  4. Kunlei Zhu
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  5. Yang Yu
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  6. Zhihong Jing
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Correspondence to Zhihong Jing.

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Du, Y., Niu, Z., Yan, T. et al. Construction of ternary heterojunction AgI/C-MoS2 nanosheets with enhanced visible-light photocatalytic property and self-cleaning performance. Front. Mater. Sci. 15, 241–252 (2021). https://doi.org/10.1007/s11706-021-0548-6

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  • DOI: https://doi.org/10.1007/s11706-021-0548-6

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