▎ 摘　　要

NOVELTY - Nanofiltration membrane comprises graphene oxide and a layered multi-metal hydroxide dispersed in the graphene oxide, the graphene oxide and the layered multimetal hydroxide are bonded together by electrostatic interaction. USE - Nanofiltration membrane for use in the filtration of quantum dot solutions (claimed). ADVANTAGE - The nanofiltration membrane has effectively separate and filter the quantum dot solution. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing a nanofiltration membrane, which involves providing a layered multimetal hydroxide; dispersing graphene oxide and layered multi-metal hydroxide into a dispersing agent to obtain a mixed solution; and depositing the mixed solution to obtain the nanofiltration membrane.