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Construction of MOFs-based AgI/Ag/Cu3(BTC)2 ternary composites as Z-scheme photocatalysts for effective degradation of tetracycline

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Abstract

Ternary Z-scheme photocatalysts were constructed using metal-organic frameworks-based AgI/Ag/Cu3(BTC)2 composites via a facile procedure. The morphology, structure, chemical composition, optical and photo-electrochemical properties of the photocatalysts were analyzed by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and UV–vis diffuse reflectance (DRS) spectroscopy. The photocatalytic tetracycline (TC) degradation demonstrated that all the AgI/Ag/Cu3(BTC)2 photocatalysts have higher photocatalytic activity than that of pure Cu3(BTC)2 and 20% AgI/Ag/Cu3(BTC)2 has the highest TC degradation efficiency. Moreover, 20% AgI/Ag/Cu3(BTC)2 also has greatly enhanced photocatalytic activities with TC degradation rate 3.41 times and 4.42 times higher than that of AgI/Cu-BTC and Cu-BTC, respectively. A possible indirect Z-scheme mechanism was also proposed according to the trapping experiment and band structures of the photocatalyst. The improved photocatalytic activity of the composite can be attributed to the incorporation of Ag and its Z-scheme structures.

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Acknowledgements

This study was supported by Xinmiao Talent Project of Zhejiang Province (2018R407073).

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Authors and Affiliations

  1. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou, 310018, People’s Republic of China

    Huan Yu, Haoyong Yin, Shumin Zhao, Jianying Gong, Zhenguo Ji & Qiulin Nie

  2. Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, 310018, People’s Republic of China

    Ling Wang

  3. Research Center of Analysis and Measurement, Zhejiang University of Technology, Hangzhou, 310014, People’s Republic of China

    Yifan Zheng

Authors
  1. Huan Yu
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  2. Haoyong Yin
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  3. Ling Wang
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  4. Shumin Zhao
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  5. Jianying Gong
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  6. Zhenguo Ji
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  7. Yifan Zheng
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  8. Qiulin Nie
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Corresponding author

Correspondence to Haoyong Yin.

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Yu, H., Yin, H., Wang, L. et al. Construction of MOFs-based AgI/Ag/Cu3(BTC)2 ternary composites as Z-scheme photocatalysts for effective degradation of tetracycline. Bull Mater Sci 44, 127 (2021). https://doi.org/10.1007/s12034-021-02414-5

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  • DOI: https://doi.org/10.1007/s12034-021-02414-5

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