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Frontiers of Chemical Science and Engineering >> 2020, Volume 14, Issue 2 doi: 10.1007/s11705-019-1872-6

Metal-organic framework-based CO

. State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China.. University of Chinese Academy of Sciences, Beijing 100049, China

Accepted: 2020-01-13 Available online:2020-01-13

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A low-carbon economy calls for CO capture technologies. Membrane separations represent an energy-efficient and environment-friendly process compared with distillations and solvent absorptions. Metal-organic frameworks (MOFs), as a novel type of porous materials, are being generated at a rapid and growing pace, which provide more opportunities for high-efficiency CO capture. In this review, we illustrate a conceptional framework from material design and membrane separation application for CO capture, and emphasize two importance themes, namely (i) design and modification of CO -philic MOF materials that targets secondary building units, pore structure, topology and hybridization and (ii) construction of crack-free membranes through chemical epitaxy growth of active building blocks, interfacial assembly, ultrathin two-dimensional nanosheet assembly and mixed-matrix integration strategies, which would give rise to the most promising membrane performances for CO capture, and be expected to overcome the bottleneck of permeability-selectivity limitations.

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