▎ 摘　　要

NOVELTY - Preparation of metal ion/gum Arabic gel modified composite membrane comprises preparing base film by using polyvinylidene fluoride film, ordinary filter paper, cleaned stainless steel mesh or cleaned copper mesh; preparing gum-graphene oxide mixed solution by dispersing gum Arabic into graphene oxide solution to obtain mixed solution, and immersing obtained base film into obtained mixed solution for 5-20 seconds; and immersing mixed solution impregnated base film into salt solution of metal ions for 15-30 seconds. USE - Method for preparing metal ion/gum Arabic gel modified composite membrane used for collecting underwater oil (claimed). ADVANTAGE - The method can obtain product with super-hydrophilic/oleophobic underwater feature, high density and oil-water separation effect.