Tailor-made microstructures lead to high-performance robust PEO membrane for CO_(2)capture via green fabrication technique  

作　　者：Wei-Shi Sun Ming-Jie Yin Wen-Hai Zhang Shuo Li Naixin Wang Quan-Fu An 

机构地区：[1]Beijing Key Laboratory for Green Catalysis and Separation,Department of Environmental and Chemical Engineering,Beijing University of Technology,Beijing,100124,China

出　　处：《Green Energy & Environment》2023年第5期1389-1397,共9页绿色能源与环境（英文版）

基　　金：This research was financially supported by National Natural Science Foundation of China(No.22125801,21975005,21878004);Cooperative Research Project of BJUT-NTUT(No.110-03).

摘　　要：Emerging excessive greenhouse gas emissions pose great threats to the ecosystem,which thus requires efficient CO_(2)capture to mitigate the disastrous issue.In this report,large molecular size bisphenol A ethoxylate diacrylate(BPA)was employed to crosslink poly(ethylene glycol)methyl ether acrylate(PEGMEA)via the green and rapid UV polymerization strategy.The microstructure of such-prepared membrane could be conveniently tailored by tuning the ratio of the two prepolymers,aiming at obtaining the optimized microstructures with suitable mesh size and PEO sol content,which was approved by a novel low-field nuclear magnetic resonance technique.The optimum membrane overcomes the tradeoff challenge:dense microstructures lower the gas permeability while loose microstructures lower high-pressure-resistance capacity,realizing a high CO_(2)permeability of 1711 Barrer and 100-h long-term running stability under 15 atm.The proposed membrane fabrication approach,hence,opens a novel gate for developing high-performance robust membranes for CO_(2)capture.

关 键 词：CO_(2)capture PEO membrane Membrane microstructures PEO sol PHOTO-CROSSLINKING 

分 类 号：TB383.2[一般工业技术—材料科学与工程] X701[环境科学与工程—环境工程]