TY - JOUR
T1 - Polyolefin reweaved ultra-micropore membrane for CO2 capture
AU - Chen, Xiuling
AU - Chen, Guining
AU - Xie, Cong
AU - Wu, Lei
AU - Liu, Gongping
AU - Li, Nanwen
AU - Jin, Wanqin
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2025/12
Y1 - 2025/12
N2 - High-performance gas separation membranes have potential in industrial separation applications, while overcoming the permeability-selectivity trade-off via regulable aperture distribution remains challenging. Here, we report a strategy to fabricate Polyolefin Reweaved Ultra-micropore Membrane (PRUM) to acquire regulable microporous channel. Specifically, olefin monomers are dispersed uniformly into a pristine membrane (e.g., PIM-1) via solution diffusion method. Upon controlled electron beam irradiation, the olefin undergoes a free radical polymerization, resulting in the formation of olefin polymer in-situ reweaved in the membrane. The deliberately regulated and contracted pore-aperture size of the membrane can be accomplished by varying the olefin polymer loading to achieve efficient gas separation. For instance, PIM-1 PRUM containing 27 wt% poly-glycidyl methacrylate demonstrate CO2 permeability of 1976 Barrer, combined with CO2/CH4 and CO2/N2 selectivities of 58.4 and 48.3 respectively, transcending the performance upper bounds. This controllable and high efficiency-design strategy provides a general approach to create sub-nanometre-sized pore-apertures of gas separation membranes with wide universality.
AB - High-performance gas separation membranes have potential in industrial separation applications, while overcoming the permeability-selectivity trade-off via regulable aperture distribution remains challenging. Here, we report a strategy to fabricate Polyolefin Reweaved Ultra-micropore Membrane (PRUM) to acquire regulable microporous channel. Specifically, olefin monomers are dispersed uniformly into a pristine membrane (e.g., PIM-1) via solution diffusion method. Upon controlled electron beam irradiation, the olefin undergoes a free radical polymerization, resulting in the formation of olefin polymer in-situ reweaved in the membrane. The deliberately regulated and contracted pore-aperture size of the membrane can be accomplished by varying the olefin polymer loading to achieve efficient gas separation. For instance, PIM-1 PRUM containing 27 wt% poly-glycidyl methacrylate demonstrate CO2 permeability of 1976 Barrer, combined with CO2/CH4 and CO2/N2 selectivities of 58.4 and 48.3 respectively, transcending the performance upper bounds. This controllable and high efficiency-design strategy provides a general approach to create sub-nanometre-sized pore-apertures of gas separation membranes with wide universality.
UR - http://www.scopus.com/inward/record.url?scp=85213950208&partnerID=8YFLogxK
U2 - 10.1038/s41467-024-55540-z
DO - 10.1038/s41467-024-55540-z
M3 - 文章
AN - SCOPUS:85213950208
SN - 2041-1723
VL - 16
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 282
ER -