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MOF-in-COF molecular sieving membrane for selective hydrogen separation

Author

Listed:
  • Hongwei Fan

    (Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover)

  • Manhua Peng

    (Institut für Festkörperphysik, Leibniz Universität Hannover)

  • Ina Strauss

    (Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover)

  • Alexander Mundstock

    (Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover)

  • Hong Meng

    (Beijing University of Chemical Technology)

  • Jürgen Caro

    (Institute of Physical Chemistry and Electrochemistry, Leibniz Universität Hannover
    South China University of Technology)

Abstract

Covalent organic frameworks (COFs) are promising materials for advanced molecular-separation membranes, but their wide nanometer-sized pores prevent selective gas separation through molecular sieving. Herein, we propose a MOF-in-COF concept for the confined growth of metal-organic framework (MOFs) inside a supported COF layer to prepare MOF-in-COF membranes. These membranes feature a unique MOF-in-COF micro/nanopore network, presumably due to the formation of MOFs as a pearl string-like chain of unit cells in the 1D channel of 2D COFs. The MOF-in-COF membranes exhibit an excellent hydrogen permeance (>3000 GPU) together with a significant enhancement of separation selectivity of hydrogen over other gases. The superior separation performance for H2/CO2 and H2/CH4 surpasses the Robeson upper bounds, benefiting from the synergy combining precise size sieving and fast molecular transport through the MOF-in-COF channels. The synthesis of different combinations of MOFs and COFs in robust MOF-in-COF membranes demonstrates the versatility of our design strategy.

Suggested Citation

  • Hongwei Fan & Manhua Peng & Ina Strauss & Alexander Mundstock & Hong Meng & Jürgen Caro, 2021. "MOF-in-COF molecular sieving membrane for selective hydrogen separation," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20298-7
    DOI: 10.1038/s41467-020-20298-7
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    Cited by:

    1. Xueru Yan & Tianqi Song & Min Li & Zhi Wang & Xinlei Liu, 2024. "Sub-micro porous thin polymer membranes for discriminating H2 and CO2," Nature Communications, Nature, vol. 15(1), pages 1-9, December.
    2. Sun, Shangcong & Jiang, Qiuqiao & Zhao, Dongyue & Cao, Tiantian & Sha, Hao & Zhang, Chuankun & Song, Haitao & Da, Zhijian, 2022. "Ammonia as hydrogen carrier: Advances in ammonia decomposition catalysts for promising hydrogen production," Renewable and Sustainable Energy Reviews, Elsevier, vol. 169(C).
    3. Mingke Yang & Huishan Wang & Julian Y. Zuo & Chun Deng & Bei Liu & Liya Chai & Kun Li & Han Xiao & Peng Xiao & Xiaohui Wang & Wan Chen & Xiaowan Peng & Yu Han & Zixuan Huang & Baocan Dong & Changyu Su, 2022. "Efficient separation of butane isomers via ZIF-8 slurry on laboratory- and pilot-scale," Nature Communications, Nature, vol. 13(1), pages 1-10, December.

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