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Metal-organic frameworks with photocatalytic bactericidal activity for integrated air cleaning

Author

Listed:
  • Ping Li

    (Beijing Institute of Technology)

  • Jiazhen Li

    (Beijing Institute of Technology)

  • Xiao Feng

    (Beijing Institute of Technology)

  • Jie Li

    (Beijing Institute of Technology)

  • Yuchen Hao

    (Beijing Institute of Technology)

  • Jinwei Zhang

    (Beijing Institute of Technology)

  • Hang Wang

    (Beijing Institute of Technology)

  • Anxiang Yin

    (Beijing Institute of Technology)

  • Junwen Zhou

    (Beijing Institute of Technology)

  • Xiaojie Ma

    (Beijing Institute of Technology)

  • Bo Wang

    (Beijing Institute of Technology)

Abstract

Air filtration has become an essential need for passive pollution control. However, most of the commercial air purifiers rely on dense fibrous filters, which have good particulate matter (PM) removal capability but poor biocidal effect. Here we present the photocatalytic bactericidal properties of a series of metal-organic frameworks (MOFs) and their potentials in air pollution control and personal protection. Specifically, a zinc-imidazolate MOF (ZIF-8) exhibits almost complete inactivation of Escherichia coli (E. coli) (>99.9999% inactivation efficiency) in saline within 2 h of simulated solar irradiation. Mechanistic studies indicate that photoelectrons trapped at Zn+ centers within ZIF-8 via ligand to metal charge transfer (LMCT) are responsible for oxygen-reduction related reactive oxygen species (ROS) production, which is the dominant disinfection mechanism. Air filters fabricated from ZIF-8 show remarkable performance for integrated pollution control, with >99.99% photocatalytic killing efficiency against airborne bacteria in 30 min and 97% PM removal. This work may shed light on designing new porous solids with photocatalytic antibiotic capability for public health protection.

Suggested Citation

  • Ping Li & Jiazhen Li & Xiao Feng & Jie Li & Yuchen Hao & Jinwei Zhang & Hang Wang & Anxiang Yin & Junwen Zhou & Xiaojie Ma & Bo Wang, 2019. "Metal-organic frameworks with photocatalytic bactericidal activity for integrated air cleaning," Nature Communications, Nature, vol. 10(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-10218-9
    DOI: 10.1038/s41467-019-10218-9
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    Cited by:

    1. Sang Bin Jeong & Ki Joon Heo & Byung Uk Lee, 2019. "Antimicrobial Air Filters Using Natural Sea Salt Particles for Deactivating Airborne Bacterial Particles," IJERPH, MDPI, vol. 17(1), pages 1-10, December.
    2. Liangbo Xie & Pengfei Wang & Yi Li & Dongpeng Zhang & Denghui Shang & Wenwen Zheng & Yuguo Xia & Sihui Zhan & Wenping Hu, 2022. "Pauling-type adsorption of O2 induced electrocatalytic singlet oxygen production on N–CuO for organic pollutants degradation," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
    3. Guusje Delen & Matteo Monai & Katarina Stančiaková & Bettina Baumgartner & Florian Meirer & Bert M. Weckhuysen, 2023. "Structure sensitivity in gas sorption and conversion on metal-organic frameworks," Nature Communications, Nature, vol. 14(1), pages 1-11, December.
    4. Linghui Peng & Haiyu Wang & Guiying Li & Zhishu Liang & Weiping Zhang & Weina Zhao & Taicheng An, 2023. "Bioinspired artificial spider silk photocatalyst for the high-efficiency capture and inactivation of bacteria aerosols," Nature Communications, Nature, vol. 14(1), pages 1-11, December.

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