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Membrane adsorbers with ultrahigh metal-organic framework loading for high flux separations

Author

Listed:
  • Hang Wang

    (Beijing Institute of Technology)

  • Shuang Zhao

    (Beijing Institute of Technology)

  • Yi Liu

    (Beijing Institute of Technology)

  • Ruxin Yao

    (Beijing Institute of Technology)

  • Xiaoqi Wang

    (Beijing Institute of Technology
    PetroChina Research Institute of Petroleum Exploration & Development)

  • Yuhua Cao

    (Beijing Institute of Technology)

  • Dou Ma

    (Beijing Institute of Technology)

  • Mingchu Zou

    (Peking University)

  • Anyuan Cao

    (Peking University)

  • Xiao Feng

    (Beijing Institute of Technology)

  • Bo Wang

    (Beijing Institute of Technology
    Tsinghua University)

Abstract

Metal-organic frameworks (MOFs) with high porosity and designable functionality make it possible to access the merits of high permeability and selectivity. However, scalable fabrication methods to produce mixed matrix membranes (MMMs) with good flexibility and ultrahigh MOF loading are urgently needed yet largely unmet. Herein, we report a thermally induced phase separation-hot pressing (TIPS-HoP) strategy to roll-to-roll produce 10 distinct MOF-membranes (loadings up to 86 wt%). Ultrahigh-molecular-weight polyethylene interweaving the MOF particles contributes to their mechanical strength. Rejections (99%) of organic dyes with a water flux of 125.7 L m–2 h–1 bar–1 under cross-flow filtration mode. The micron-sized channels between the MOF particles translate into fast water permeation, while the porous MOFs reject solutes through rapid adsorption. This strategy paves ways for developing high-performance membrane adsorbers for crucial separation processes. As a proof-of-concept, the abilities of the membrane adsorbers for separating racemates and proteins have been demonstrated.

Suggested Citation

  • Hang Wang & Shuang Zhao & Yi Liu & Ruxin Yao & Xiaoqi Wang & Yuhua Cao & Dou Ma & Mingchu Zou & Anyuan Cao & Xiao Feng & Bo Wang, 2019. "Membrane adsorbers with ultrahigh metal-organic framework loading for high flux separations," Nature Communications, Nature, vol. 10(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-12114-8
    DOI: 10.1038/s41467-019-12114-8
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