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Metal-induced ordered microporous polymers for fabricating large-area gas separation membranes

Nature Materialsvolume 18pages163168 (2019) | Download Citation

Abstract

Metal-induced ordered microporous polymers (MMPs), a class of porous polymer, are synthesized from amine-bearing polymers, small organic linkers and divalent metal ions using a polymer-directed chemical synthesis process. Specifically, small organic linkers first coordinate to metal ions, with the resulting unit cells then self-assembling along the extension of polymer chains to construct three-dimensional frameworks. The MMPs demonstrate good controllability of crystal and framework size, as well as hydrolytic stability. MMP dispersions were coated on a modified polysulfone substrate to fabricate MMP/mPSf membranes with an ultrathin selective layer (below 50 nm) and surface areas of >100 cm2. The MMPs are readily fabricated into defect-free thin selective-layered membranes with high CO2 permeance (3,000 GPU) and stable CO2/N2 selectivity (78) under both humid and dry gas feed conditions, demonstrating promising CO2 membrane separation performance. This synthetic methodology could be extended to other polymers, potentially enabling facile synthesis of membrane materials.

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All the data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

This research is supported by the National Key R&D Program of China (no. 2017YFB0603400) and the Natural Science Foundation of China (no. 21436009).

Author information

Author notes

  1. These authors contributed equally: Zhihua Qiao and Song Zhao

Affiliations

  1. Chemical Engineering Research Center, School of Chemical Engineering and Technology, Tianjin University, Tianjin, China

    • Zhihua Qiao
    • , Song Zhao
    • , Menglong Sheng
    • , Jixiao Wang
    • , Shichang Wang
    •  & Zhi Wang
  2. State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin, China

    • Zhihua Qiao
    •  & Chongli Zhong
  3. Tianjin Key Laboratory of Membrane Science and Desalination Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, China

    • Zhihua Qiao
    • , Song Zhao
    • , Menglong Sheng
    • , Jixiao Wang
    • , Shichang Wang
    •  & Zhi Wang
  4. Collaborative Innovation Center of Chemical Science and Engineering, Tianjin, China

    • Menglong Sheng
    • , Jixiao Wang
    • , Zhi Wang
    •  & Michael D. Guiver
  5. State Key Laboratory of Engines, Tianjin University, Tianjin, China

    • Michael D. Guiver

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Contributions

Z.Q., S.Z. and M.S. fabricated the materials and conducted the characterization. Z.W., C.Z. and M.D.G. carried out experimental design. J.W. and S.W. performed data analysis. Z.Q., S.Z., Z.W., C.Z. and M.D.G. wrote the paper. All authors discussed the results and commented on the manuscript.

Competing interests

The authors declare no competing interests.

Corresponding authors

Correspondence to Zhi Wang or Chongli Zhong or Michael D. Guiver.

Supplementary Information

  1. Supplementary Information

    Supplementary Sections 1–8, Supplementary Figures 1–19, Supplementary Tables 1–2, Supplementary References 1–13

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DOI

https://doi.org/10.1038/s41563-018-0221-3

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