A low-carbon economy calls for CO₂ 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 CO₂ capture. In this review, we illustrate a conceptional framework from material design and membrane separation application for CO₂ capture, and emphasize two importance themes, namely (i) design and modification of CO₂-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 CO₂ capture, and be expected to overcome the bottleneck of permeability-selectivity limitations.

低碳经济要求采用CO ₂捕集技术。与蒸馏和溶剂吸收相比，膜分离代表了一种节能高效，环境友好的过程。金属有机骨架（MOF）作为一种新型的多孔材料，正在以迅猛的速度增长，这为高效捕获CO ₂提供了更多的机会。在这篇综述中，我们从材料设计和膜分离应用中阐明了用于CO ₂捕集的概念框架，并强调了两个重要主题，即（i）CO _2的设计和改性。亲和性的MOF材料，其目标是次级建筑单元，孔结构，拓扑结构和杂交，以及（ii）通过化学外延生长活性构件，界面组装，超薄二维纳米片组装和混合矩阵整合策略来构建无裂膜，这将为CO ₂捕获带来最有希望的膜性能，并有望克服渗透性-选择性限制的瓶颈。