功能化氧化石墨烯基混合基质膜分离CO_(2)气体的研究进展

Research Progress on Separation of CO_(2) Gas by Functionalized Graphene Oxide Based Mixed Matrix Membrane

氧化石墨烯独特的二维结构在气体分离膜领域引起了研究者们的广泛关注,将氧化石墨烯与不同聚合物基质掺杂制备的混合基质膜可对不同大小的气体分子进行筛分。氧化石墨烯表面具有丰富的含氧基团,可为其表面修饰和改性提供活性位点,从而引入各种功能性物质。对氧化石墨烯进行功能化改性,能有效避免氧化石墨烯层间堆积并提高其在溶剂及聚合物基体中的分散性,从而获得更好的界面相容性和气体分离性能。介绍共价和非共价两种功能化氧化石墨烯基混合基质膜在CO_(2)气体分离中的应用。

The unique two-dimensional structure of Graphene Oxide has attracted extensive attention in the field of gas separation membrane. Mixed Matrix Membranes(MMMs)prepared by doping graphene oxide with different polymer matrices can screen gas molecules of different sizes. The surface of graphene oxide has abundant oxygen-containing groups, which can provide active sites for the surface decoration and modification of GO, thereby introducing various functional substances. Functional modification of graphene oxide can effectively avoid the interlayer accumulation of graphene oxide and improve its dispersibility in the solvent and polymer matrix, so as to obtain better interface compatibility and gas separation performance. To introduce the application of covalent and non-covalent functionalized graphene oxide-based mixed matrix membranes in CO_(2)gas separation.