▎ 摘　　要

NOVELTY - The method involves forming a protective layer on a sandwich-type graphene oxide-gas film and a hydrophilic surface layer on a base film by performing chemical bonding or surface grafting operation. The sandwich-type graphene oxide-gas film is arranged on a base film. The base film is a hollow, tubular, flat or rolled-type fiber, ultra-filtration membrane, nano-filtration membrane, reverse osmosis membrane, micro-filter film, ion exchange film, inorganic membrane, polymer film, inorganic/organic hybrid film or inorganic/organic composite film. USE - Sandwich-type graphene oxide-gas film manufacturing method. ADVANTAGE - The method enables simplifying sandwich-type graphene oxide-gas separating film manufacturing steps and forming the protective layer on the sandwich-type graphene oxide-gas film so as to increase sandwich-type graphene oxide-gas film strength and reduce space occupied by the sandwich-type graphene oxide-gas film.