Most CO₂ separation membranes are polymeric membranes owing to low cost and easy processability. Nevertheless, conventional polymeric membranes may suffer from a compromise between permeability and selectivity represented by the Robeson upper bound curves. Mixed‐matrix membranes (MMMs), prepared by adding nanomaterials in polymer matrices, can achieve both high gas permeability and selectivity with the potential for future applications. This review summarizes gas transport channels constructed with different dimensional nanomaterials in MMMs such as 1D, 2D, and 3D nanomaterials which have been widely researched in recent years, and discusses the effect of different gas transport channels in CO₂ separation MMMs. The challenges about each kind of gas transport channels are outlined and future prospects are suggested.

中文翻译：

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混合基质膜中不同尺寸纳米材料构建的气体输运通道的最新研究进展

由于低成本和易于加工，大多数CO ₂分离膜是聚合物膜。然而，常规的聚合物膜可能会遭受由Robeson上限曲线表示的渗透性和选择性之间的折衷。通过在聚合物基体中添加纳米材料制成的混合基质膜（MMM）可以实现高透气性和选择性，并具有未来应用的潜力。这篇综述总结了近年来在MMM中用不同尺寸的纳米材料（例如1D，2D和3D纳米材料）构造的气体传输通道，并讨论了不同的气体传输通道在CO _{2中的作用。}分离式MMM。概述了每种气体运输渠道所面临的挑战，并提出了未来的前景。