▎ 摘　　要

NOVELTY - Preparation of graphene oxide film involves mixing graphene oxide dispersed aqueous solution with 1,2-dichloroethane to form incompatible electrolyte solution interface and adsorbing graphene oxide in aqueous phase on interface to form graphene oxide film. USE - Preparation of graphene oxide film for suppressing transfer of ions e.g. tetraethylammonium ions, perchlorate ions, tetramethylammonium ions or tetrafluoroborate ions from aqueous phase to oil phase at interface of electrolyte solution (all claimed) and biomedicine. ADVANTAGE - The method provides the graphene oxide which can be used as nanocarrier for drugs and in liquid/liquid simulation of semi-biofilms and helps to understand the electrochemical study on interface adsorption and assembly of graphene oxide on interface between two immiscible electrolyte solutions and adsorption behavior of graphene oxide at liquid/liquid interface.