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Hydrogen-bonded network enabling ultrathin coating for post-combustion carbon capture.

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Title: Hydrogen-bonded network enabling ultrathin coating for post-combustion carbon capture.
Authors: Zheng, Guangtai1 (AUTHOR), Zhao, Boxuan1 (AUTHOR), Wu, Ji1 (AUTHOR), Sun, Shipeng2,3 (AUTHOR), Zhang, Sui1 (AUTHOR) chezhasu@nus.edu.sg
Source: Journal of Membrane Science. Feb2026, Vol. 740, pN.PAG-N.PAG. 1p.
Subjects: Carbon sequestration, Hollow fibers, Industrial applications, Hydrogen bonding, Polyethylene oxide, Surface coatings
Abstract: Polyethylene oxide (PEO)-based membranes exhibit significant promise for carbon capture, however, fabricating high-performance hollow fiber membranes remains challenging. Herein, we report a hydrogen-bonded network strategy for fabricating ultrathin, high-performance hollow fiber membranes tailored for post-combustion CO 2 capture. Specifically, this strategy involves: (i) a hydrophobic polydimethylsiloxane (PDMS) backbone that serves as a durable adhesive to the gutter layer, (ii) polyamide segments that facilitate hydrogen bonding with the coPEO copolymer, and (iii) hydrophilic ethylene oxide (EO) moieties designed to selectively attract CO 2 molecules. This method enables the straightforward dip-coating to fabricate ultrathin selective layer onto PDMS-guttered hollow fiber supports using a super-diluted coating solution. The resulting membrane demonstrates promising performance metrics at ambient temperature, achieving a CO 2 permeance of approximately 1079 GPU and a CO 2 /N 2 selectivity of approximately 33, thereby surpassing the upper bound between permeance and selectivity typically observed for hollow fiber membranes. Notably, under simulated industrial testing conditions of 67 % relative humidity (RH) at 50 °C, the membrane still attains a CO 2 permeance of up to 946 GPU and a CO 2 /N 2 selectivity of 25.7, which is comparable to that of ambient and dry condition. Overall, this hydrogen-bonded network strategy provides a scalable fabrication platform for high-performance membranes, thereby enhancing their potential for industrial applications. [Display omitted] • Hydrogen-bonded network enables ultrathin defect-free coating on hollow fiber membranes. • TFC hollow fiber membrane achieves industrially viable performance under ambient conditions. • Excellent separation performance retained at elevated temperature and humidified condition. • Simple dip-coating with super-diluted solution ensures scalable membrane fabrication. • Enhanced interfacial compatibility overcomes challenges of coating on PDMS gutter layer. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Membrane Science is the property of Elsevier B.V. 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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Header DbId: egs
DbLabel: Engineering Source
An: 189851368
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
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  Data: Hydrogen-bonded network enabling ultrathin coating for post-combustion carbon capture.
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  Data: <searchLink fieldCode="AR" term="%22Zheng%2C+Guangtai%22">Zheng, Guangtai</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhao%2C+Boxuan%22">Zhao, Boxuan</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Ji%22">Wu, Ji</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Sun%2C+Shipeng%22">Sun, Shipeng</searchLink><relatesTo>2,3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Zhang%2C+Sui%22">Zhang, Sui</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> chezhasu@nus.edu.sg</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Membrane+Science%22">Journal of Membrane Science</searchLink>. Feb2026, Vol. 740, pN.PAG-N.PAG. 1p.
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  Data: <searchLink fieldCode="DE" term="%22Carbon+sequestration%22">Carbon sequestration</searchLink><br /><searchLink fieldCode="DE" term="%22Hollow+fibers%22">Hollow fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Industrial+applications%22">Industrial applications</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+bonding%22">Hydrogen bonding</searchLink><br /><searchLink fieldCode="DE" term="%22Polyethylene+oxide%22">Polyethylene oxide</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+coatings%22">Surface coatings</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Polyethylene oxide (PEO)-based membranes exhibit significant promise for carbon capture, however, fabricating high-performance hollow fiber membranes remains challenging. Herein, we report a hydrogen-bonded network strategy for fabricating ultrathin, high-performance hollow fiber membranes tailored for post-combustion CO 2 capture. Specifically, this strategy involves: (i) a hydrophobic polydimethylsiloxane (PDMS) backbone that serves as a durable adhesive to the gutter layer, (ii) polyamide segments that facilitate hydrogen bonding with the coPEO copolymer, and (iii) hydrophilic ethylene oxide (EO) moieties designed to selectively attract CO 2 molecules. This method enables the straightforward dip-coating to fabricate ultrathin selective layer onto PDMS-guttered hollow fiber supports using a super-diluted coating solution. The resulting membrane demonstrates promising performance metrics at ambient temperature, achieving a CO 2 permeance of approximately 1079 GPU and a CO 2 /N 2 selectivity of approximately 33, thereby surpassing the upper bound between permeance and selectivity typically observed for hollow fiber membranes. Notably, under simulated industrial testing conditions of 67 % relative humidity (RH) at 50 °C, the membrane still attains a CO 2 permeance of up to 946 GPU and a CO 2 /N 2 selectivity of 25.7, which is comparable to that of ambient and dry condition. Overall, this hydrogen-bonded network strategy provides a scalable fabrication platform for high-performance membranes, thereby enhancing their potential for industrial applications. [Display omitted] • Hydrogen-bonded network enables ultrathin defect-free coating on hollow fiber membranes. • TFC hollow fiber membrane achieves industrially viable performance under ambient conditions. • Excellent separation performance retained at elevated temperature and humidified condition. • Simple dip-coating with super-diluted solution ensures scalable membrane fabrication. • Enhanced interfacial compatibility overcomes challenges of coating on PDMS gutter layer. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Membrane Science is the property of Elsevier B.V. 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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      – Type: doi
        Value: 10.1016/j.memsci.2025.124943
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      – Code: eng
        Text: English
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        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Carbon sequestration
        Type: general
      – SubjectFull: Hollow fibers
        Type: general
      – SubjectFull: Industrial applications
        Type: general
      – SubjectFull: Hydrogen bonding
        Type: general
      – SubjectFull: Polyethylene oxide
        Type: general
      – SubjectFull: Surface coatings
        Type: general
    Titles:
      – TitleFull: Hydrogen-bonded network enabling ultrathin coating for post-combustion carbon capture.
        Type: main
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          Name:
            NameFull: Zheng, Guangtai
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            NameFull: Zhao, Boxuan
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            NameFull: Wu, Ji
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            NameFull: Sun, Shipeng
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            NameFull: Zhang, Sui
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            – D: 15
              M: 02
              Text: Feb2026
              Type: published
              Y: 2026
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              Value: 740
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            – TitleFull: Journal of Membrane Science
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