Issue 56, 2024

Challenges and recent advances in MOF-based gas separation membranes

Abstract

Membrane-based gas separation, characterized by a small footprint, low energy consumption and no pollution, has gained widespread attention as an environmentally friendly alternative to traditional gas separation. Metal–organic-frameworks (MOFs) are considered to be one of the most promising membrane-based gas separation materials because of their large specific surface area and high porosity. One of the hottest studies at the moment is how to utilize the characteristics of MOFs to prepare higher performance gas separation membranes. This paper provides a review of gas separation membranes used in recent years. Firstly, the synthesis methods of MOFs and MOF membranes are briefly introduced. Then, methods to improve the membrane properties of MOFs are described in detail, and include applications of lamellar MOFs, ionic liquid (IL) spin coating, functionalization of MOFs, defect engineering and mixed fillers. In addition, the challenges of MOF-based gas separation membranes are presented, including pore size, environmental disturbances, plasticization, interfacial compatibility, and so on. Finally, based on the current development status of the MOF membranes, the development prospects of MOF gas separation membranes are discussed. It is hoped to provide reliable and complete ideas for researchers to prepare high-performance gas separation membranes in the future.

Graphical abstract: Challenges and recent advances in MOF-based gas separation membranes

Article information

Article type
Highlight
Submitted
26 Apr. 2024
Accepted
11 Jūn. 2024
First published
24 Jūn. 2024

Chem. Commun., 2024,60, 7124-7135

Challenges and recent advances in MOF-based gas separation membranes

W. Su, Y. Xiang, Y. Dai, Y. Wang, S. Zhong and J. Li, Chem. Commun., 2024, 60, 7124 DOI: 10.1039/D4CC02002B

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