▎ 摘　　要

NOVELTY - Preparation of oil/water separation multifunctional composite membrane material comprises preprocessing porous copper thin film through hydrogen bubble template method; soaking in chitosan/glutaraldehyde/graphene oxide acetic acid mixed solution for 1-30 minutes, and taking out; and drying in air, soaking in sodium hydroxide solution for 0.5-20 minutes, taking out, and washing with deionized water for 1-2 minutes. USE - Method for preparation of oil/water separation multifunctional composite membrane material (claimed). ADVANTAGE - The multifunctional composite membrane material has surface area of 3x 3 cm2, pore size of 100-500 mu m, secondary aperture of 10-120 mu m, water contact angle of 0-5 degrees , underwater oil contact angle of 160 plus minus 5 degrees , underwater oil roll angle of less than 5 degrees , underwater super oleophobic properties, and good mechanical stability.