▎ 摘　　要

NOVELTY - Preparation of boron nitride/graphene oxide nanofiltration membrane involves (i) mixing boron nitride and urea, ball-milling, dialyzing, washing and removing redundant urea to obtain amino functionalized boron nitride nanosheet aqueous dispersion, (ii) preparing boron nitride-graphene oxide composite film, mixing and stirring the amino-functionalized boron nitride nanosheet with an aqueous solution of graphite oxide nanosheets, and assembling the obtained mixed solution into a boron nitride-graphene oxide composite membrane under positive pressure, and (iii) carrying out static pressure on the boron nitride-graphene oxide mixed film prepared by positive pressure under the pressure of nitrogen. USE - Preparation of boron nitride/graphene oxide nanofiltration membrane used in separation of aqueous or organic dyes e.g. eosin Y, rose bengal, methylene blue, rhodamine 6G, brilliant yellow, evans blue, acid fuchsin, fast green, congo red or brilliant blue in methanol, ethanol or isopropanol (all claimed). ADVANTAGE - The method ensures stability and separation performance of graphene oxide film, and is simple and easy to operate. The boron nitride nanosheets and graphene oxide nanosheets rich functional groups to exert the boron nitride nanosheet into the generated rich water channel. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for use of boron nitride/graphene oxide nanofiltration membrane in the separation of aqueous or organic dyes.