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Anhydrous interfacial polymerization of sub-1 Å sieving polyamide membrane

Author

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  • Guangjin Zhao

    (Beijing University of Chemical Technology)

  • Haiqi Gao

    (College of Chemistry, Xinjiang University)

  • Zhou Qu

    (Beijing University of Chemical Technology)

  • Hongwei Fan

    (Beijing University of Chemical Technology)

  • Hong Meng

    (College of Chemistry, Xinjiang University)

Abstract

Highly permeable polyamide (PA) membrane capable of precise ionic sieving can be utilized for many energy-efficient chemical separations. To fulfill this target, it is crucial to innovate membrane-forming process to induce a narrow pore-size distribution. Herein, we report an anhydrous interfacial polymerization (AIP) at a solid-liquid interface where the amine layer sublimated is in direct contact with the alkane containing acyl chlorides. In such a heterophase interface, water-caused side reactions are eliminated, and the amines in compact arrangement enable an intensive and orderly IP reaction, leading to a unique PA layer with an ionic sieving accuracy of 0.5 Å. The AIP-PA membrane demonstrates excellent separation selectivities of monovalent and divalent cations such as Mg2+/Li+ (78.3) and anions such as Cl-/SO42- (29.2) together with a high water flux up to 13.6 L m−2 h−1 bar−1. Our AIP strategy may provide inspirations for engineering high-precision PA membranes available in various advanced separations.

Suggested Citation

  • Guangjin Zhao & Haiqi Gao & Zhou Qu & Hongwei Fan & Hong Meng, 2023. "Anhydrous interfacial polymerization of sub-1 Å sieving polyamide membrane," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-43291-2
    DOI: 10.1038/s41467-023-43291-2
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    References listed on IDEAS

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    1. Liang Shen & Ruihuan Cheng & Ming Yi & Wei-Song Hung & Susilo Japip & Lian Tian & Xuan Zhang & Shudong Jiang & Song Li & Yan Wang, 2022. "Polyamide-based membranes with structural homogeneity for ultrafast molecular sieving," Nature Communications, Nature, vol. 13(1), pages 1-11, December.
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    Cited by:

    1. Ting Xu & Li Cao & Shuhao An & Xiaowei Liu & Zhen Li & Zhiping Lai, 2025. "A homochiral covalent organic framework membrane for the enantioseparation and fractionation of amino acids," Nature Communications, Nature, vol. 16(1), pages 1-8, December.
    2. Zhenxiang Pan & Yalong Lei & Tiange Yan & Fuxin Zheng & Yu Liao & Jiang Zhan & Tong Zhang & Lu Shao & Gang Han, 2025. "Molecular manipulation of polyamide nanostructures reconciles the permeance-selectivity threshold for precise ion separation," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
    3. Gang Lu & Hubao A & Yuanyuan Zhao & Yan Zhao & Hengyue Xu & Wentao Shang & Xi Chen & Jiawei Sun & Huacheng Zhang & Jun Wu & Bing Dai & Bart Bruggen & Raf Dewil & Alicia Kyoungjin An & Shuang Zheng, 2025. "Nano-confined controllable crystallization in supramolecular polymeric membranes for ultra-selective desalination," Nature Communications, Nature, vol. 16(1), pages 1-11, December.
    4. Pengrui Jin & Zhao Yang & Frederik Ceyssens & Jiakuan Yang & Shushan Yuan & Huanting Wang, 2025. "Nanoimprinted polyamide membranes for ultrafast and precise molecular sieving with low fouling," Nature Communications, Nature, vol. 16(1), pages 1-11, December.
    5. Noor Ul Afsar & Michael Holmboe & C. André Ohlin & Niaz Ali Khan & Liang Ge & Tongwen Xu & Naser Tavajohi, 2025. "Monovalent anion-selective membranes fabricated via in situ interfacial polymerization," Nature Communications, Nature, vol. 16(1), pages 1-13, December.
    6. Yafei Su & Huawen Peng & Xufei Liu & Jiapeng Li & Qiang Zhao, 2024. "High performance, pH-resistant membranes for efficient lithium recovery from spent batteries," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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