▎ 摘　　要

NOVELTY - Graphene oxide based complex membrane comprises complex membrane prepared by taking complex membrane of the graphene oxide as a porous carrier pre modified by silane coupling agent. USE - The graphene oxide based complex membrane is useful for radioactivity waste water treatment (claimed) and heavy metal waste water treatment. ADVANTAGE - The method: increases the membrane ion selective radionuclide (retention), concentrate and removal of radionuclides; is simple and easy to operate; has high repeatability; improve the water flux and ion rejection of complex film; and has stable long-term operation of film separation performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene oxide based complex membrane comprising (a) soaking the porous carrier in ethanol solution of silane coupling agent and heat treating, to obtain porous carriers of the pre-modified silane coupling agent, (b) mixing graphene oxide in water, stirring and dispersing, adding buffer liquid for adjusting pH, ultrasonically dispersing, adding hydrochloric acid dopamine solution, stirring, centrifuging and drying, to obtaining polydopamine/graphene oxide complex, (c) mixing polydopamine/graphene oxide complex and water and ultrasonically treating, to obtain film-forming solution, (d) vacuum filtering film-forming solution and/or forming the film on the surface of pre modified porous support by vacuum dip coating and drying.