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Interfacial engineering of Bi2S3/Ti3C2Tx MXene based on work function for rapid photo-excited bacteria-killing

Author

Listed:
  • Jianfang Li

    (Tianjin University)

  • Zhaoyang Li

    (Tianjin University)

  • Xiangmei Liu

    (Hubei University)

  • Changyi Li

    (Tianjin Medical University)

  • Yufeng Zheng

    (Peking University)

  • Kelvin Wai Kwok Yeung

    (The University of Hong Kong)

  • Zhenduo Cui

    (Tianjin University)

  • Yanqin Liang

    (Tianjin University)

  • Shengli Zhu

    (Tianjin University)

  • Wenbin Hu

    (Tianjin University)

  • Yajun Qi

    (Hubei University)

  • Tianjin Zhang

    (Hubei University)

  • Xianbao Wang

    (Hubei University)

  • Shuilin Wu

    (Tianjin University)

Abstract

In view of increasing drug resistance, ecofriendly photoelectrical materials are promising alternatives to antibiotics. Here we design an interfacial Schottky junction of Bi2S3/Ti3C2Tx resulting from the contact potential difference between Ti3C2Tx and Bi2S3. The different work functions induce the formation of a local electrophilic/nucleophilic region. The self-driven charge transfer across the interface increases the local electron density on Ti3C2Tx. The formed Schottky barrier inhibits the backflow of electrons and boosts the charge transfer and separation. The photocatalytic activity of Bi2S3/Ti3C2Tx intensively improved the amount of reactive oxygen species under 808 nm near-infrared radiation. They kill 99.86% of Staphylococcus aureus and 99.92% of Escherichia coli with the assistance of hyperthermia within 10 min. We propose the theory of interfacial engineering based on work function and accordingly design the ecofriendly photoresponsive Schottky junction using two kinds of components with different work functions to effectively eradicate bacterial infection.

Suggested Citation

  • Jianfang Li & Zhaoyang Li & Xiangmei Liu & Changyi Li & Yufeng Zheng & Kelvin Wai Kwok Yeung & Zhenduo Cui & Yanqin Liang & Shengli Zhu & Wenbin Hu & Yajun Qi & Tianjin Zhang & Xianbao Wang & Shuilin , 2021. "Interfacial engineering of Bi2S3/Ti3C2Tx MXene based on work function for rapid photo-excited bacteria-killing," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21435-6
    DOI: 10.1038/s41467-021-21435-6
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    Cited by:

    1. Chen, Chunchao & Ji, Rui & Xia, Xiaoyong & Jin, Liujun & Deng, Kaiyuan & Xu, Qingfeng & Lu, Jianmei, 2024. "Dispersed Bi2S3 site in a porphyrin-based metal–organic framework for photocatalytic nitrogen fixation," Applied Energy, Elsevier, vol. 357(C).
    2. Yanzhang Li & Hongyu Wang & Yan Li & Huan Ye & Yanan Zhang & Rongzhang Yin & Haoning Jia & Bingxu Hou & Changqiu Wang & Hongrui Ding & Xiangzhi Bai & Anhuai Lu, 2023. "Electron transfer rules of minerals under pressure informed by machine learning," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    3. Yuqian Qiao & Yingde Xu & Xiangmei Liu & Yufeng Zheng & Bo Li & Yong Han & Zhaoyang Li & Kelvin Wai Kwok Yeung & Yanqin Liang & Shengli Zhu & Zhenduo Cui & Shuilin Wu, 2022. "Microwave assisted antibacterial action of Garcinia nanoparticles on Gram-negative bacteria," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    4. Xiaoyang Pan & Xuhui Yang & Maoqing Yu & Xiaoxiao Lu & Hao Kang & Min-Quan Yang & Qingrong Qian & Xiaojing Zhao & Shijing Liang & Zhenfeng Bian, 2023. "2D MXenes polar catalysts for multi-renewable energy harvesting applications," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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