In situ one-step formation of flexible porous polymerized ionic liquids membranes for efficient CO2 capture

Murad Khan; Jing Shi; Sana Nadeem; Sadia Ahmed; Chun Long Wang; Jin Xiu Zhou; Xiaohua Ma; Mu Hua Huang

doi:10.1016/j.memsci.2026.125545

In situ one-step formation of flexible porous polymerized ionic liquids membranes for efficient CO₂ capture

Murad Khan
, Jing Shi
, Sana Nadeem
, Sadia Ahmed
, Chun Long Wang
, Jin Xiu Zhou^*
, Xiaohua Ma^*
, Mu Hua Huang^*

^*Corresponding author for this work

Beijing Institute of Technology
Shenzhen University
Tiangong University

Research output: Contribution to journal › Letter › peer-review

Abstract

Polymerized ionic liquids (PILs) membranes demonstrated good potential for advanced separation potentials. To further improve the gas separation performance of PILs-based membranes, a flexible porous polypyrrolidinium membranes for CO₂/N₂ separation has been developed through a one-step processing via a facile ring-opening-metathesis polymerization (ROMP), the resulting porous polypyrrolidinium membranes showed CO₂ permeability of 209 Barrer (PCPy-TFSI) and CO₂/N₂ selectivity of 46.9 (PCPy-PF₆). More importantly, the porous polypyrrolidinium membranes showed improved anti-aging performance compared with PIM-1 membranes. This newly-developed ionic porous polymer membranes will bring new possibilities to new MMMs technology in the near future.

Original language	English
Article number	125545
Journal	Journal of Membrane Science
Volume	751
DOIs	https://doi.org/10.1016/j.memsci.2026.125545
Publication status	Published - Jun 2026
Externally published	Yes

Keywords

Aging resistance
Membrane separations
Polymerized ionic liquids membranes
Porous polypyrrolidinium
ROMP

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10.1016/j.memsci.2026.125545

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@article{5141b7c44d914da4bce622ae4c921040,

title = "In situ one-step formation of flexible porous polymerized ionic liquids membranes for efficient CO2 capture",

abstract = "Polymerized ionic liquids (PILs) membranes demonstrated good potential for advanced separation potentials. To further improve the gas separation performance of PILs-based membranes, a flexible porous polypyrrolidinium membranes for CO2/N2 separation has been developed through a one-step processing via a facile ring-opening-metathesis polymerization (ROMP), the resulting porous polypyrrolidinium membranes showed CO2 permeability of 209 Barrer (PCPy-TFSI) and CO2/N2 selectivity of 46.9 (PCPy-PF6). More importantly, the porous polypyrrolidinium membranes showed improved anti-aging performance compared with PIM-1 membranes. This newly-developed ionic porous polymer membranes will bring new possibilities to new MMMs technology in the near future.",

keywords = "Aging resistance, Membrane separations, Polymerized ionic liquids membranes, Porous polypyrrolidinium, ROMP",

author = "Murad Khan and Jing Shi and Sana Nadeem and Sadia Ahmed and Wang, \{Chun Long\} and Zhou, \{Jin Xiu\} and Xiaohua Ma and Huang, \{Mu Hua\}",

note = "Publisher Copyright: Copyright {\textcopyright} 2026. Published by Elsevier B.V.",

year = "2026",

month = jun,

doi = "10.1016/j.memsci.2026.125545",

language = "English",

volume = "751",

journal = "Journal of Membrane Science",

issn = "0376-7388",

publisher = "Elsevier B.V.",

}

TY - JOUR

T1 - In situ one-step formation of flexible porous polymerized ionic liquids membranes for efficient CO2 capture

AU - Khan, Murad

AU - Shi, Jing

AU - Nadeem, Sana

AU - Ahmed, Sadia

AU - Wang, Chun Long

AU - Zhou, Jin Xiu

AU - Ma, Xiaohua

AU - Huang, Mu Hua

PY - 2026/6

Y1 - 2026/6

N2 - Polymerized ionic liquids (PILs) membranes demonstrated good potential for advanced separation potentials. To further improve the gas separation performance of PILs-based membranes, a flexible porous polypyrrolidinium membranes for CO2/N2 separation has been developed through a one-step processing via a facile ring-opening-metathesis polymerization (ROMP), the resulting porous polypyrrolidinium membranes showed CO2 permeability of 209 Barrer (PCPy-TFSI) and CO2/N2 selectivity of 46.9 (PCPy-PF6). More importantly, the porous polypyrrolidinium membranes showed improved anti-aging performance compared with PIM-1 membranes. This newly-developed ionic porous polymer membranes will bring new possibilities to new MMMs technology in the near future.

AB - Polymerized ionic liquids (PILs) membranes demonstrated good potential for advanced separation potentials. To further improve the gas separation performance of PILs-based membranes, a flexible porous polypyrrolidinium membranes for CO2/N2 separation has been developed through a one-step processing via a facile ring-opening-metathesis polymerization (ROMP), the resulting porous polypyrrolidinium membranes showed CO2 permeability of 209 Barrer (PCPy-TFSI) and CO2/N2 selectivity of 46.9 (PCPy-PF6). More importantly, the porous polypyrrolidinium membranes showed improved anti-aging performance compared with PIM-1 membranes. This newly-developed ionic porous polymer membranes will bring new possibilities to new MMMs technology in the near future.

KW - Aging resistance

KW - Membrane separations

KW - Polymerized ionic liquids membranes

KW - Porous polypyrrolidinium

KW - ROMP

UR - https://www.scopus.com/pages/publications/105036734735

U2 - 10.1016/j.memsci.2026.125545

DO - 10.1016/j.memsci.2026.125545

M3 - Letter

AN - SCOPUS:105036734735

SN - 0376-7388

VL - 751

JO - Journal of Membrane Science

JF - Journal of Membrane Science

M1 - 125545

ER -

In situ one-step formation of flexible porous polymerized ionic liquids membranes for efficient CO₂ capture

Abstract

Keywords

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