▎ 摘　　要

NOVELTY - Preparing mercapto compound functionalized graphene oxide film involves ultrasonically dispersing the graphene oxide nano-sheet in the organic solution under the condition of room temperature, then adding azodiisobutyronitrile and mercapto chiral compound, in the inert environment, reacting at 50-200degrees Celsius after the reaction is finished, washing, purifying, forming film to obtain product. USE - Method for preparing mercapto compound functionalized graphene oxide film used in chiral separation (claimed) and in pharmacy, chemical industry, agriculture and food industry. ADVANTAGE - The method enables to prepare mercapto compound functionalized graphene oxide film, which improves the process of chiral selector in separation, and increases the membrane flux and selectivity of the chiral separation membrane.