▎ 摘　　要

NOVELTY - Preparation of modified graphene, involves adding graphene and a sulfur-nitrogen compound to water to obtain a mixture, adding the mixture to a reaction furnace, heating to 80-100 degrees C, stirring the mixture for 6-12 hours, cooling, solid-liquid separating the mixture, and storing the solid portion as product. USE - Preparation of modified graphene (claimed). ADVANTAGE - The method is simple, economical, easy to control, and suitable for large-scale industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for modified graphene comprising amino group(s) and sulfur(s) on the surface.