石墨烯基分离膜研究进展

Recent Advances in Graphene Based Separation Membranes

石墨烯为单层平面碳原子以sp^2杂化方式紧密结合在一起形成的二维原子晶体,可作为基本材料构筑各种不同性能的宏观二维分离膜,是目前膜分离研究领域的一颗崭亮新星。本文重点介绍了各种石墨烯基分离膜的制备方法,并对其在水处理、气体分离、海水淡化等方向的应用研究进行评述。相比于传统高分子基分离膜,石墨烯分离膜在抗污染性能、膜通量以及选择性方面均有提升。除此之外,本文对基于其他新兴二维材料——氮化硼(BN)、二硫化钼(MoS_2)以及二硫化钨(WS_2)等的分离膜研究也进行了前瞻性讨论。最后,对石墨烯基膜的应用机遇和挑战作出评价,同时对其发展前景作出展望。

Graphene is a one-atom-thick planar sheet of sp2-bonded carbon atoms that are densely packed in a two-dimensional crystal. As the building block for various macroscopic membranes, graphene has been known as a rising star in the area of membrane separation. The preparation and application of graphene based separation membrane are discussed in this review. Particular emphasis is directed to the Wide application of graphene based membrane in the field of water treatment, gas separation, desalination and so on. Compared to traditional polymer membrane, graphene based separation membrane has the advantage of anti-fouling, high flux and good selectivity. Moreover, the application of other emerging 2D materials such as BN, MoS2 and WS2 in separation technology is also discussed. Finally, the future opportunities and challenges for the wide application of graphene based membrane are also discussed along with perspectives for future research in these fields.