▎ 摘　　要

NOVELTY - Preparation of graphene-based Carboxymethyl cellulose nanocrystalline composite material involves ultrasonically dispersing graphene oxide in ultrapure water, adding 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride as carbonyl activator, ultrasonically processing for 20-25 minutes to form graphene oxide dispersion, dispersing sodium carboxymethyl cellulose in ultrapure water, adding 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride as carbonyl activator, stirring uniformly to form aqueous solution of sodium carboxymethyl cellulose, mixing carboxymethyl cellulose sodium aqueous solution with graphene oxide dispersion, adding ethylenediamine and crosslinker including N-hydroxysuccinimide, reacting at 48-55 degrees C for 50-53 hours, adding hydrazine hydrate to reduce excess oxygen-containing functional groups and carbon-oxygen double bonds on the graphene oxide, suction-filtering, washing filtrate and drying. USE - Preparation of graphene-based carboxymethyl cellulose nanocrystalline composite material. ADVANTAGE - The method enables simple and rapid preparation of graphene-based carboxymethyl cellulose nanocrystalline composite material.