Volume 134, Issue 46 e202212816
Forschungsartikel

2,2′-Biphenol-based Ultrathin Microporous Nanofilms for Highly Efficient Molecular Sieving Separation

Prof. Shao-Lu Li

Prof. Shao-Lu Li

State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, P.R. China Tianjin 300387 P.R. China

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Guoliang Chang

Guoliang Chang

State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, P.R. China Tianjin 300387 P.R. China

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Yangzheng Huang

Yangzheng Huang

State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, P.R. China Tianjin 300387 P.R. China

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Ken Kinooka

Ken Kinooka

Research Center for Membrane and Film Technology, Graduate School of Science, Technology and Innovation, Kobe University, Kobe, 657-8501 Japan

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Yanting Chen

Yanting Chen

State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, P.R. China Tianjin 300387 P.R. China

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Wenming Fu

Wenming Fu

State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, P.R. China Tianjin 300387 P.R. China

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Prof. Genghao Gong

Corresponding Author

Prof. Genghao Gong

State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, P.R. China Tianjin 300387 P.R. China

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Prof. Tomohisa Yoshioka

Prof. Tomohisa Yoshioka

Research Center for Membrane and Film Technology, Graduate School of Science, Technology and Innovation, Kobe University, Kobe, 657-8501 Japan

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Prof. Neil B. McKeown

Corresponding Author

Prof. Neil B. McKeown

EaStCHEM, School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ UK

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Prof. Yunxia Hu

Corresponding Author

Prof. Yunxia Hu

State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tiangong University, Tianjin, 300387, P.R. China Tianjin 300387 P.R. China

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First published: 23 September 2022
Citations: 4

Abstract

Organic solvent nanofiltration (OSN) is an emerging membrane separation technology, which urgently requires robust, easily processed, OSN membranes possessing high permeance and small solutes-selectivity to facilitate enhanced industrial uptake. Herein, we describe the use of two 2,2′-biphenol (BIPOL) derivatives to fabricate hyper-crosslinked, microporous polymer nanofilms through IP. Ultra-thin, defect-free polyesteramide/polyester nanofilms (≈5 nm) could be obtained readily due to the relatively large molecular size and ionized nature of the BIPOL monomers retarding the rate of the IP. The enhanced microporosity arises from the hyper-crosslinked network structure and monomer rigidity. Specifically, the amino-BIPOL/PAN membrane exhibits extraordinary permselectivity performances with molecular weight cut-off as low as 233 Da and MeOH permeance of ≈13 LMH/bar. Precise separation of small dye mixtures with similar M.W. based on both their charge and molecular size are achieved.

Conflict of interest

The authors declare no conflict of interest.

Data Availability Statement

The data that support the findings of this study are available in the supplementary material of this article.

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