Merging polymers of intrinsic microporosity and porous carbon-based zinc oxide composites in novel mixed matrix membranes for efficient gas separation  

作　　者：Muning Chen Jiemei Zhou Jing Ma Weigang Zheng Guanying Dong Xin Li Zhihong Tian Yatao Zhang Jing Wang Yong Wang 

机构地区：[1]School of Chemical Engineering,Zhengzhou University,Zhengzhou,450001,Henan,China [2]State Key Laboratory of Materials-Oriented Chemical Engineering and College of Chemical Engineering,Nanjing Tech University,Nanjing,211816,Jiangsu,China [3]Singapore Membrane Technology Centre,Nanyang Environment and Water Research Institute,Nanyang Technological University,Singapore,637141,Singapore [4]Engineering Research Center for Nanomaterials,Henan University,Kaifeng,475004,Henan,China [5]State Key Laboratory of Coking Coal Resources Green Exploitation,Zhengzhou University,Zhengzhou 450001,China [6]School of Energy and Environment,Southeast University,Nanjing,210096,Jiangsu,China

出　　处：《Green Energy & Environment》2025年第1期203-213,共11页绿色能源与环境（英文版）

基　　金：financial support from the National Natural Science Foundation of China(Nos.22108258 and 52003251);Program for Science&Technology Innovation Talents in Universities of Henan Province(24HASTIT004);Outstanding Youth Fund of Henan Scientific Committee(222300420085);Science and Technology Joint Project of Henan Province(222301420041)。

摘　　要：Mixed matrix membranes(MMMs)have demonstrated significant promise in energy-intensive gas separations by amalgamating the unique properties of fillers with the facile processability of polymers.However,achieving a simultaneous enhancement of permeability and selectivity remains a formidable challenge,due to the difficulty of achieving an optimal match between polymers and fillers.In this study,we incorporate a porous carbon-based zinc oxide composite(C@ZnO)into high-permeability polymers of intrinsic microporosity(PIMs)to fabricate MMMs.The dipole–dipole interaction between C@ZnO and PIMs ensures their exceptional compatibility,mitigating the formation of non-selective voids in the resulting MMMs.Concurrently,C@ZnO with abundant interconnected pores can provide additional low-resistance pathways for gas transport in MMMs.As a result,the CO_(2) permeability of the optimized C@ZnO/PIM-1 MMMs is elevated to 13,215 barrer,while the CO_(2)/N_(2) and CO_(2)/CH_(4) selectivity reached 21.5 and 14.4,respectively,substantially surpassing the 2008 Robeson upper bound.Additionally,molecular simulation results further corroborate that the augmented membrane gas selectivity is attributed to the superior CO_(2) affinity of [e-mail] summary,we believe that this work not only expands the application of MMMs for gas separation but also heralds a paradigm shift in the application of porous carbon materials.

关 键 词：Mixed matrix membranes Polymers of intrinsic microporosity CO_(2)separation Porous carbon materials 

分 类 号：X701[环境科学与工程—环境工程] TQ051.893[化学工程]