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Synthesis of dual Z-scheme flower-like spherical Ag3PO4/MoS2/g-C3N4 photocatalyst with high photocatalytic performance

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Abstract

The excellent photoresponse of semiconductors enables them as a promising photocatalyst for photocatalytic degradation of organic pollutants and antibiotics, but their practical applications are limited by photogenerated carrier recombination, instability, and fixed energy band positions. Herein, we designed and synthesized a dual Z-scheme flower-like spherical Ag3PO4/MoS2/g-C3N4 (AMN) photocatalyst loaded with different mass of g-C3N4 (3, 5 and 7 mg). Under visible light irradiation, MoS2 enhanced the light absorption range of AMN composite. The holes concentrated in the valence band of Ag3PO4 provide strong oxidation capacity, and the electrons retained in conduction band of g-C3N4 provide strong reduction ability in the photocatalytic system. It is helpful to improve the separation efficiency of photogenerated carriers and enhance the photocatalytic activity of AMN composite. The AMN photocatalyst loaded with 5 mg g-C3N4 (AMN-5) has the optimal photocatalytic activity. The photocatalytic degradation efficiency of the photocatalyst for methylene blue (MB) within 24 min is 3.98, 1.85, and 1.17 times that of g-C3N4, Ag3PO4, and Ag3PO4/MoS2, respectively. After three cycles, the degradation efficiency of AMN-5 for MB decreased from 99.44% to 90%, about 3.79 times of Ag3PO4 (23.77%). In addition, the optimal AMN-5 photocatalyst also has excellent photocatalytic degradation efficiency for Rhodamine B (RhB) and tetracycline (TC). This design and concept provide a promising insight for the photocatalytic degradation of pollutants.

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All data included in this study are available upon request by contact with the corresponding author.

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Funding

The work was supported by Fundamental Research Funds for the Central Universities and Graduate Student Innovation Fund of Donghua University (NO. CUSF-DH-D-2021049). The authors have no relevant financial or non-financial interests to disclose.

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Authors and Affiliations

  1. College of Science, Donghua University, Shanghai, 201620, People’s Republic of China

    Keke Chen, Lingwei Li, Menghao Luo & Shaolin Xue

  2. School of Information Science and Technology, Donghua University, Shanghai, 201620, People’s Republic of China

    Hange Feng & Jingxin Sang

Authors
  1. Keke Chen
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  2. Hange Feng
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  3. Lingwei Li
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  4. Menghao Luo
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  5. Shaolin Xue
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  6. Jingxin Sang
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Contributions

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were completed by KC. The first draft of the manuscript was written by KC, and the experimental tests were carried out by K C, HF, ML, and JS. The manuscript was revised by KC, HF, LL, and SX. All authors have commented on previous manuscript versions. All authors read and approved the final manuscript.

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Correspondence to Shaolin Xue.

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Chen, K., Feng, H., Li, L. et al. Synthesis of dual Z-scheme flower-like spherical Ag3PO4/MoS2/g-C3N4 photocatalyst with high photocatalytic performance. J Mater Sci: Mater Electron 33, 16077–16098 (2022). https://doi.org/10.1007/s10854-022-08500-6

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  • DOI: https://doi.org/10.1007/s10854-022-08500-6

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