▎ 摘　　要

.Carbon nanomaterials such as nanopores graphene, functionalized graphene and graphene oxide membranes and so forth, have attracted much attention for not only scientific interest but also various application expectations. Gas separation, including gas storage, carbon dioxide capture, flue gas purification and natural gas sweetening through nanopores is of great interest and the porous materials particularly nanoporous graphene, functionalized graphene nanopores and nanoporous graphene oxide membranes are widely utilized in this phenomenon. Nanoporous graphene, functionalized graphene nanopores and nanoporous graphene oxide membranes with narrow pore distribution, provide exciting opportunities in gas separation processes. These membranes are an excellent platform for developing size-selective membranes and exhibit unique gas separation properties. This paper reviews potential applications of nanoporous graphene, functionalized graphene nanopores and nanoporous graphene oxide based membranes for gas separation on the basis of theoretical studies. The properties of porous graphene have been discussed in first section. The second and third sections provide the recent advances in theoretical studies of nanoporous graphene, functionalized graphene nanopores and nanoporous graphene oxide membranes in gas separation, respectively.