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Host–guest assembly engineered nanofiltration membrane for high‐efficiency ion–ion separation.

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Title: Host–guest assembly engineered nanofiltration membrane for high‐efficiency ion–ion separation.
Authors: Ali, Zakawat1,2 (AUTHOR), Bai, Ju1,2 (AUTHOR), Ali, Wajahat3 (AUTHOR), Hassan, Mehdi3 (AUTHOR), Shan, Linglong1 (AUTHOR) llshan@ipe.ac.cn, Zhang, Xiangping1,4 (AUTHOR) xpzhang@ipe.ac.cn
Source: AIChE Journal. May2026, Vol. 72 Issue 5, p1-9. 9p.
Subjects: Nanofiltration, Polyamide membranes, Separation (Technology), Molecular recognition, Membrane permeability (Biology), Saline water conversion
Abstract: Ultra‐high permeance and ion–ion selective polyamide (PA) membranes hold immense potential for desalination and brine valorization. To address the inherent limitations of conventional PA membranes that balance permeance and selectivity, we developed a novel host–guest strategy by co‐embedding host and guest molecules into the membrane, termed Host–Guest Modulated Interfacial Polymerization (HGMIP). This approach successfully incorporates host–guest molecules into the PA matrix, where host cavities act as artificial water channels, hence enhancing permeance. Simultaneously, the host–guest self‐assembly also fine‐tunes reaction kinetics and pore size, producing membranes with low molecular weight cut‐off (MWCO) and improved surface charge and morphology. Consequently, the optimized PA‐H1 ⊃ G and PA‐H2 ⊃ G membranes show exceptional size and charge‐dependent ion sieving (Li+/Mg2+ = 66, Cl−/SO42− = 289) with improved permeance, highlighting clear advantages over state‐of‐the‐art membranes. This work establishes host–guest chemistry as a versatile platform for engineering PA membranes with tailored nanochannels and surface properties, enabling precise ion–ion separation without compromising permeance. [ABSTRACT FROM AUTHOR]
Copyright of AIChE Journal is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 192785664
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Host–guest assembly engineered nanofiltration membrane for high‐efficiency ion–ion separation.
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  Data: <searchLink fieldCode="AR" term="%22Ali%2C+Zakawat%22">Ali, Zakawat</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bai%2C+Ju%22">Bai, Ju</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Ali%2C+Wajahat%22">Ali, Wajahat</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Hassan%2C+Mehdi%22">Hassan, Mehdi</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Shan%2C+Linglong%22">Shan, Linglong</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> llshan@ipe.ac.cn</i><br /><searchLink fieldCode="AR" term="%22Zhang%2C+Xiangping%22">Zhang, Xiangping</searchLink><relatesTo>1,4</relatesTo> (AUTHOR)<i> xpzhang@ipe.ac.cn</i>
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  Data: <searchLink fieldCode="JN" term="%22AIChE+Journal%22">AIChE Journal</searchLink>. May2026, Vol. 72 Issue 5, p1-9. 9p.
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  Data: <searchLink fieldCode="DE" term="%22Nanofiltration%22">Nanofiltration</searchLink><br /><searchLink fieldCode="DE" term="%22Polyamide+membranes%22">Polyamide membranes</searchLink><br /><searchLink fieldCode="DE" term="%22Separation+%28Technology%29%22">Separation (Technology)</searchLink><br /><searchLink fieldCode="DE" term="%22Molecular+recognition%22">Molecular recognition</searchLink><br /><searchLink fieldCode="DE" term="%22Membrane+permeability+%28Biology%29%22">Membrane permeability (Biology)</searchLink><br /><searchLink fieldCode="DE" term="%22Saline+water+conversion%22">Saline water conversion</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Ultra‐high permeance and ion–ion selective polyamide (PA) membranes hold immense potential for desalination and brine valorization. To address the inherent limitations of conventional PA membranes that balance permeance and selectivity, we developed a novel host–guest strategy by co‐embedding host and guest molecules into the membrane, termed Host–Guest Modulated Interfacial Polymerization (HGMIP). This approach successfully incorporates host–guest molecules into the PA matrix, where host cavities act as artificial water channels, hence enhancing permeance. Simultaneously, the host–guest self‐assembly also fine‐tunes reaction kinetics and pore size, producing membranes with low molecular weight cut‐off (MWCO) and improved surface charge and morphology. Consequently, the optimized PA‐H1 ⊃ G and PA‐H2 ⊃ G membranes show exceptional size and charge‐dependent ion sieving (Li+/Mg2+ = 66, Cl−/SO42− = 289) with improved permeance, highlighting clear advantages over state‐of‐the‐art membranes. This work establishes host–guest chemistry as a versatile platform for engineering PA membranes with tailored nanochannels and surface properties, enabling precise ion–ion separation without compromising permeance. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of AIChE Journal is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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        Value: 10.1002/aic.70251
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      – Code: eng
        Text: English
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        PageCount: 9
        StartPage: 1
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      – SubjectFull: Nanofiltration
        Type: general
      – SubjectFull: Polyamide membranes
        Type: general
      – SubjectFull: Separation (Technology)
        Type: general
      – SubjectFull: Molecular recognition
        Type: general
      – SubjectFull: Membrane permeability (Biology)
        Type: general
      – SubjectFull: Saline water conversion
        Type: general
    Titles:
      – TitleFull: Host–guest assembly engineered nanofiltration membrane for high‐efficiency ion–ion separation.
        Type: main
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            NameFull: Ali, Zakawat
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            NameFull: Bai, Ju
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            NameFull: Ali, Wajahat
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            NameFull: Hassan, Mehdi
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            NameFull: Shan, Linglong
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            NameFull: Zhang, Xiangping
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            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
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