The excess CO₂ emission into the atmosphere is one of the important environmental issues nowadays. It is urgent to develop environmentally friendly and low energy technologies to reduce the CO₂ emission. Membrane technology shows great potential in CO₂ separation because of the inherent merit over other conventional separation techniques. High permselectivity membranes play a vital role in efficient membrane processes. The thin film composite membranes with excellent performance have attracted more and more attentions. In this review, the CO₂ separation membranes are grouped into dense polymer membranes, microporous material membranes and mixed matrix membranes. A number of representative membranes with high performance are highlighted. In addition, the exploration of CO₂ separation membrane in pilot-scale are presented, followed by a brief analysis on the challenges of materials and membrane preparation in large-scale. Finally, the direction for further research is also discussed. It is believed that the review provides potential insights and guidance for the future development of thin film composite membranes for CO₂ separation, and hence promote the development of membrane.

过量的CO ₂排放到大气中是当今重要的环境问题之一。迫切需要开发环境友好的低能耗技术以减少CO ₂排放。膜技术显示出在CO ₂分离中的巨大潜力，因为它具有优于其他常规分离技术的固有优点。高选择性渗透膜在有效的膜过程中起着至关重要的作用。具有优异性能的薄膜复合膜受到越来越多的关注。在这篇评论中，CO ₂分离膜分为致密的聚合物膜，微孔材料膜和混合基质膜。突出了许多具有代表性的高性能膜。此外，介绍了中试规模的CO ₂分离膜的探索，然后简要分析了材料和大规模制备膜的挑战。最后，还讨论了进一步研究的方向。相信该综述为用于CO ₂分离的薄膜复合膜的未来发展提供了潜在的见识和指导，并因此促进了膜的发展。