▎ 摘　　要

NOVELTY - A self-supporting graphene oxide thin film preparing method involves using suspension of graphene oxide as raw material and vacuum filtration to prepare the self-supporting graphene oxide thin film, using divalent and/or multivalent metal ion solution processed polymer filter membrane as filter membrane of the vacuum filtration or self-supporting graphene oxide film on the surface of the vacuum filtration formed by adding divalent and/or multivalent metal ion solution, followed by vacuum pumping and filtering. USE - Method for preparing a self-supporting graphene oxide thin film having a high stability of the aqueous phase. ADVANTAGE - The method enables preparing the self-supporting graphene oxide thin film with better stability, in simple, effective, inexpensive and environment-friendly manner, and is good for industrial application.