Recent advances in nanoporous graphene membrane for gas separation and water purification

作     者：Chengzhen Sun Boyao Wen Bofeng Bai 

作者机构：State Key Laboratory of Multiphase Flow in Power EngineeringXi’an Jiaotong University 

出 版 物：《Science Bulletin》 (科学通报（英文版）)

年 卷 期：2015年第60卷第21期

页      面：1807-1823页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：supported by the National Natural Science Foundation of China(51425603 and 51236007) 

主　　题：Nanoporous graphene Gas separationWater purification Molecular permeationmechanism Membrane fabrication 

摘      要：Graphene is a one-atom-thick sheet of graphite comprising sp2-hybridized carbon atoms arranged in the hexagonal honeycomb lattices. By removing the honeycomb lattices and forming nanopores with specific geometry and size, nanoporous graphene has been demonstrated as a very high-efficiency separation membrane, due to the ultrafast molecular permeation rate for its one-atom thickness. This review focuses on the recent advances in nanoporous graphene membrane for the applications of gas separation and water purification, with a major emphasis on the molecular permeation mechanisms and the advanced fabrication methods of this state-of-the-art membrane. We highlight the advanced theoretical and experimental works and discuss the gas/water molecular transport mechanisms through the graphene nanopores accompanied with theoretical models. In addition, we summarize some representative membrane fabrication methods, covering the graphene transfer to porous substrates and the pore generation. We anticipate that this review can provide a platform for understanding the current challenges to make the conceptual membrane a reality and attracting more and more attentions from scientists and engineers.