▎ 摘　　要

NOVELTY - Preparing ultra-thin graphene oxide film involves making graphene oxide film through electrophoresis. USE - Method for preparing ultra-thin graphene oxide film for molecular sieving (claimed). ADVANTAGE - The method enables to prepare ultra-thin graphene oxide film in an efficient manner with improved mechanical property. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an electrophoresis tank, which comprises outer wall that is made of conductive metal. The conductive metal is 316 stainless steel or 304 stainless steel.