▎ 摘　　要

NOVELTY - Preparation of asymmetric graphene oxide composite film with adjustable channel, involves sieving prepared graphene oxide dispersion, obtaining graphene oxide dispersion with different particle size, and dispersing the graphene oxide dispersion of large particle size and small particles size on the same surface of a film substrate. USE - Preparation of asymmetric graphene oxide composite film with adjustable channel (claimed), used for isolation of target isolates. ADVANTAGE - The method enables economical and simple preparation of asymmetric graphene oxide composite film having controllable channel dimensions, channel ordering degree, excellent hydrophilicity, and excellent separation performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for asymmetric graphene oxide composite film with adjustable channel.