▎ 摘　　要

NOVELTY - Grafted membrane comprises graphene and an ionic liquid. USE - Grafted membrane for absorbing heavy metal of waste water or sewage, and used as additive for micromachining or as lubricant for reducing friction and abrasion (all claimed). ADVANTAGE - The grafted membrane reduces environmental pollution of heavy metal pollutants in an environmentally friendly manner, solves problem of stability inherent in conventional support type liquid membrane, solves problems due to low contact area and low material transfer, and removes heavy metal with high efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing grafted membrane, which involves stirring graphene nano plate and ionic liquid.