Microstructure Manipulation of Covalent Organic Frameworks (COFs)-based Membrane for Efficient Separations

被引:0
作者
Hanze Ma
Shaoyu Wang
Yanxiong Ren
Xu Liang
Yuhan Wang
Ziting Zhu
Guangwei He
Zhongyi Jiang
机构
[1] Tianjin University,Key Laboratory for Green Chemical Technology of Ministry of Education, School of Chemical Engineering and Technology
[2] Collaborative Innovation Center of Chemical Science and Engineering (Tianjin),undefined
[3] Joint School of National University of Singapore and Tianjin University,undefined
[4] International Campus of Tianjin University,undefined
来源
Chemical Research in Chinese Universities | 2022年 / 38卷
关键词
Covalent organic framework; Organic molecular sieve membrane; Membrane separation; Microporous material;
D O I
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中图分类号
学科分类号
摘要
Covalent organic framework(COF) membranes have exhibited great potential to become the next-generation membranes for efficient separations due to the diverse structures, ordered framework pores, tunable functionality and excellent stability. This review presents the microstructure manipulation strategies for separation performance enhancement of COF membranes in recent years. Based on the three mechanisms of molecular sieving, surface diffusion, and facilitated transport, the structural modulation methods to enhance the selectivity of COF membranes are analyzed in detail. Next, strategies of realizing ultrashort mass transfer pathways and ultralow mass transfer resistance for the permeability enhancement are elaborated. Furthermore, the framework stability in COFs, interlayer stability between COF nanosheets and interfacial stability between COF layer and substrate are discussed. Finally, we discuss the existing challenges and perspectives on the future development of COF membranes, targeting at identifying the most promising strategies and directions for the engineering of COF membranes.
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页码:325 / 338
页数:13
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