▎ 摘　　要

NOVELTY - Preparing carboxylated graphite alkene involves dispersing the graphene oxide in the solvent to obtain the graphene oxide dispersion, adding the graphene oxide dispersion liquid into the reaction kettle, adding citric acid, esterifying agent and dehydrating condensing agent to react to obtain the reaction product, adding solvent into the reaction product, filtering, washing to obtain the filter product, re-dispersing the filter product in the solvent and drying to obtain product. USE - Method for preparing carboxylated graphite alkene used in large-scale industrial production. No biological data given. ADVANTAGE - The method does not generate any environment pollution, meets the requirement of green environment-friendly, and the raw material is cheap and easy to obtain, suitable for large-scale industrial production. The method is simple, the final product is easy to disperse, has small sheet diameter, low layer number, when used for modifying the high molecular material, it is good for dispersing in the base material, avoiding agglomeration, so it can reach better modification effect under the condition of small adding amount. The reaction condition of the method is mild and controllable, it can well keep the sheet structure of graphene oxide, keeping the original characteristic, which can be applied to the industrial production