▎ 摘　　要

NOVELTY - Preparing graphene oxide-alumina composite airgel comprises e.g. (i) adding graphene oxide into dispersion solvent, performing ultrasonic treatment, separating using low-speed centrifuge, (ii) taking the solution obtained in step (i), adjusting pH of the solution using dilute aqueous ammonia and dilute hydrochloric acid, then adding aluminum chloride hexahydrate, and reacting, and (iii) cooling, magnetic stirring, then transferring mixed solution into polytetrafluorohydrothermal kettle, distilling columnar product, washing, drying to obtain final product. USE - The method is useful for preparing graphene oxide-alumina composite airgel (claimed). DETAILED DESCRIPTION - Preparing graphene oxide-alumina composite airgel comprises (i) adding graphene oxide into dispersion solvent, performing ultrasonic treatment for 1 hour using ultrasonic cleaning instrument, separating using low-speed centrifuge, filtering out the lower layer of the precipitate to take the upper solution, (ii) taking the solution obtained in step (i), adjusting pH of the solution using dilute aqueous ammonia and dilute hydrochloric acid, then adding aluminum chloride hexahydrate, and reacting, and (iii) cooling to room temperature, magnetic stirring for 0.5 hours, then transferring mixed solution into polytetrafluorohydrothermal kettle, maintaining at 180 degrees C for 12 hours, cooling reactor to room temperature, distilling columnar product, washing with alcohol (2-3 times), drying product in a freeze dryer for 12 hours to obtain final product.