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Achieving high permeability and enhanced selectivity for Angstrom-scale separations using artificial water channel membranes

Author

Listed:
  • Yue-xiao Shen

    (The Pennsylvania State University
    University of California)

  • Woochul Song

    (The Pennsylvania State University)

  • D. Ryan Barden

    (University of New Hampshire)

  • Tingwei Ren

    (The Pennsylvania State University)

  • Chao Lang

    (The Pennsylvania State University)

  • Hasin Feroz

    (The Pennsylvania State University)

  • Codey B. Henderson

    (The Pennsylvania State University)

  • Patrick O. Saboe

    (The Pennsylvania State University)

  • Daniel Tsai

    (The Pennsylvania State University)

  • Hengjing Yan

    (University of California at Santa Barbara)

  • Peter J. Butler

    (The Pennsylvania State University)

  • Guillermo C. Bazan

    (University of California at Santa Barbara)

  • William A. Phillip

    (University of Notre Dame)

  • Robert J. Hickey

    (The Pennsylvania State University)

  • Paul S. Cremer

    (The Pennsylvania State University)

  • Harish Vashisth

    (University of New Hampshire)

  • Manish Kumar

    (The Pennsylvania State University
    The Pennsylvania State University
    The Pennsylvania State University)

Abstract

Synthetic polymer membranes, critical to diverse energy-efficient separations, are subject to permeability-selectivity trade-offs that decrease their overall efficacy. These trade-offs are due to structural variations (e.g., broad pore size distributions) in both nonporous membranes used for Angstrom-scale separations and porous membranes used for nano to micron-scale separations. Biological membranes utilize well-defined Angstrom-scale pores to provide exceptional transport properties and can be used as inspiration to overcome this trade-off. Here, we present a comprehensive demonstration of such a bioinspired approach based on pillar[5]arene artificial water channels, resulting in artificial water channel-based block copolymer membranes. These membranes have a sharp selectivity profile with a molecular weight cutoff of ~ 500 Da, a size range challenging to achieve with current membranes, while achieving a large improvement in permeability (~65 L m−2 h−1 bar−1 compared with 4–7 L m−2 h−1 bar−1) over similarly rated commercial membranes.

Suggested Citation

  • Yue-xiao Shen & Woochul Song & D. Ryan Barden & Tingwei Ren & Chao Lang & Hasin Feroz & Codey B. Henderson & Patrick O. Saboe & Daniel Tsai & Hengjing Yan & Peter J. Butler & Guillermo C. Bazan & Will, 2018. "Achieving high permeability and enhanced selectivity for Angstrom-scale separations using artificial water channel membranes," Nature Communications, Nature, vol. 9(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:9:y:2018:i:1:d:10.1038_s41467-018-04604-y
    DOI: 10.1038/s41467-018-04604-y
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    Cited by:

    1. Changwei Zhao & Yanjun Zhang & Yuewen Jia & Bojun Li & Wenjing Tang & Chuning Shang & Rui Mo & Pei Li & Shaomin Liu & Sui Zhang, 2023. "Polyamide membranes with nanoscale ordered structures for fast permeation and highly selective ion-ion separation," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Bingbing Yuan & Yuhang Zhang & Pengfei Qi & Dongxiao Yang & Ping Hu & Siheng Zhao & Kaili Zhang & Xiaozhuan Zhang & Meng You & Jiabao Cui & Juhui Jiang & Xiangdong Lou & Q. Jason Niu, 2024. "Self-assembled dendrimer polyamide nanofilms with enhanced effective pore area for ion separation," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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