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Enhanced and synergistic catalytic activation by photoexcitation driven S−scheme heterojunction hydrogel interface electric field

Author

Listed:
  • Aiwen Wang

    (Harbin Institute of Technology)

  • Meng Du

    (Harbin Institute of Technology)

  • Jiaxin Ni

    (Harbin Institute of Technology)

  • Dongqing Liu

    (Harbin Institute of Technology)

  • Yunhao Pan

    (Harbin Institute of Technology)

  • Xiongying Liang

    (Harbin Institute of Technology)

  • Dongmei Liu

    (Harbin Institute of Technology)

  • Jun Ma

    (Harbin Institute of Technology)

  • Jing Wang

    (ETH Zürich
    Swiss Federal Laboratories for Materials Science and Technology)

  • Wei Wang

    (Harbin Institute of Technology)

Abstract

The regulation of heterogeneous material properties to enhance the peroxymonosulfate (PMS) activation to degrade emerging organic pollutants remains a challenge. To solve this problem, we synthesize S−scheme heterojunction PBA/MoS2@chitosan hydrogel to achieve photoexcitation synergistic PMS activation. The constructed heterojunction photoexcited carriers undergo redox conversion with PMS through S−scheme transfer pathway driven by the directional interface electric field. Multiple synergistic pathways greatly enhance the reactive oxygen species generation, leading to a significant increase in doxycycline degradation rate. Meanwhile, the 3D polymer chain spatial structure of chitosan hydrogel is conducive to rapid PMS capture and electron transport in advanced oxidation process, reducing the use of transition metal activator and limiting the leaching of metal ions. There is reason to believe that the synergistic activation of PMS by S−scheme heterojunction regulated by photoexcitation will provide a new perspective for future material design and research on enhancing heterologous catalysis oxidation process.

Suggested Citation

  • Aiwen Wang & Meng Du & Jiaxin Ni & Dongqing Liu & Yunhao Pan & Xiongying Liang & Dongmei Liu & Jun Ma & Jing Wang & Wei Wang, 2023. "Enhanced and synergistic catalytic activation by photoexcitation driven S−scheme heterojunction hydrogel interface electric field," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-42542-6
    DOI: 10.1038/s41467-023-42542-6
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    References listed on IDEAS

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    1. Vincent Wing-hei Lau & Igor Moudrakovski & Tiago Botari & Simon Weinberger & Maria B. Mesch & Viola Duppel & Jürgen Senker & Volker Blum & Bettina V. Lotsch, 2016. "Rational design of carbon nitride photocatalysts by identification of cyanamide defects as catalytically relevant sites," Nature Communications, Nature, vol. 7(1), pages 1-10, November.
    2. Feiyan Xu & Kai Meng & Bei Cheng & Shengyao Wang & Jingsan Xu & Jiaguo Yu, 2020. "Unique S-scheme heterojunctions in self-assembled TiO2/CsPbBr3 hybrids for CO2 photoreduction," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
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