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Reversed thermo-switchable molecular sieving membranes composed of two-dimensional metal-organic nanosheets for gas separation

Author

Listed:
  • Xuerui Wang

    (National University of Singapore)

  • Chenglong Chi

    (National University of Singapore)

  • Kang Zhang

    (National University of Singapore)

  • Yuhong Qian

    (National University of Singapore)

  • Krishna M. Gupta

    (National University of Singapore)

  • Zixi Kang

    (National University of Singapore)

  • Jianwen Jiang

    (National University of Singapore)

  • Dan Zhao

    (National University of Singapore)

Abstract

It is highly desirable to reduce the membrane thickness in order to maximize the throughput and break the trade-off limitation for membrane-based gas separation. Two-dimensional membranes composed of atomic-thick graphene or graphene oxide nanosheets have gas transport pathways that are at least three orders of magnitude higher than the membrane thickness, leading to reduced gas permeation flux and impaired separation throughput. Here we present nm-thick molecular sieving membranes composed of porous two-dimensional metal-organic nanosheets. These membranes possess pore openings parallel to gas concentration gradient allowing high gas permeation flux and high selectivity, which are proven by both experiment and molecular dynamics simulation. Furthermore, the gas transport pathways of these membranes exhibit a reversed thermo-switchable feature, which is attributed to the molecular flexibility of the building metal-organic nanosheets.

Suggested Citation

  • Xuerui Wang & Chenglong Chi & Kang Zhang & Yuhong Qian & Krishna M. Gupta & Zixi Kang & Jianwen Jiang & Dan Zhao, 2017. "Reversed thermo-switchable molecular sieving membranes composed of two-dimensional metal-organic nanosheets for gas separation," Nature Communications, Nature, vol. 8(1), pages 1-10, April.
    • Handle: RePEc:nat:natcom:v:8:y:2017:i:1:d:10.1038_ncomms14460
    DOI: 10.1038/ncomms14460
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    Cited by:

    1. Rezakazemi, Mashallah & Arabi Shamsabadi, Ahmad & Lin, Haiqing & Luis, Patricia & Ramakrishna, Seeram & Aminabhavi, Tejraj M., 2021. "Sustainable MXenes-based membranes for highly energy-efficient separations," Renewable and Sustainable Energy Reviews, Elsevier, vol. 143(C).
    2. Yisa Zhou & Ying Wu & Haoyu Wu & Jian Xue & Li Ding & Rui Wang & Haihui Wang, 2022. "Fast hydrogen purification through graphitic carbon nitride nanosheet membranes," Nature Communications, Nature, vol. 13(1), pages 1-10, December.
    3. Yuecheng Wang & Yujie Ban & Ziyi Hu & Weishen Yang, 2023. "Energy-efficient extraction of linear alkanes from various isomers using structured metal-organic framework membrane," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    4. Xiang Li & Weibin Lin & Vivekanand Sharma & Radoslaw Gorecki & Munmun Ghosh & Basem A. Moosa & Sandra Aristizabal & Shanshan Hong & Niveen M. Khashab & Suzana P. Nunes, 2023. "Polycage membranes for precise molecular separation and catalysis," Nature Communications, Nature, vol. 14(1), pages 1-12, December.

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