▎ 摘　　要

NOVELTY - Modifying amino groups on the surface of graphene oxide sheets, comprises (a) under anhydrous conditions, using toluene as a dispersant to prepare 0.4 mg/ml graphene oxide sheet (GO) turbid solution, (b) adding the ≮ 0.5 wt.% aminosilane coupling agent into the cloudy solution of graphene oxide sheet, stirring and mixing, (c) heating and refluxing the system at 85-105℃ for 12-15 hours, and continue to feed the protective gas during the heating process, and (d) using absolute ethanol to centrifuge and washing the product, and dispersing in absolute ethanol for storage. USE - The method is useful for modifying amino groups on surface of graphene oxide sheets. Uses include but are not limited to plastic, rubber, ceramic, coating, cosmetic and medicine carrier. ADVANTAGE - The method has good operability and strong repeatability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for an oxidized graphene sheet of modified amino prepared by the method as mentioned above.