▎ 摘　　要

NOVELTY - Graphene oxide hybrid multi-wall self-lubricating micro/nano capsule comprises ionic liquid as core material and multi-layer graphene oxide hybrid system as wall material, where the structure of multilayer graphene oxide hybrid system from the inside to the outside comprising polyurea/graphene oxide/(polyethyleneimine/graphene oxide)n, here n represents the number of layers of polyethyleneimine/graphene oxide , and N greater than or equal to 1 (natural number). USE - Used as graphene oxide hybrid multi-wall self-lubricating micro/nano capsule. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing graphene oxide hybrid multi-wall self-lubricating micro/nano capsule comprising (i) forming mixture comprising graphene oxide, ionic liquid, and water, (ii) mixing the mixture with isocyanate monomer, then adding chain extender, heating the reaction to obtain polyurea/graphene oxide double-walled micro-nanocapsule coated with ionic liquid, (iii) forming mixed system comprising polyethyleneimine, dopamine hydrochloride, and buffer solution, (iv) mixing the micro-nanocapsules obtained in the step (ii) with mixing system obtained in the step (iii), and reacting at room temperature to obtain dopamine-polyethyleneimine modified polyurea/graphene oxide double-walled micro-nanocapsules, and (v) mixing with aqueous graphene oxide solution, reacting under stirring to obtain core material as ionic liquid.