▎ 摘　　要

NOVELTY - Preparing graphene oxide-polyethyleneimine composite material, comprises preparing polyethyleneimine aqueous solution, mixing with graphene oxide in a container, ultrasonically shaking the container in an ultrasonic device, adding advanced prepared aqueous solution of concentrated agent 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) into the container, ultrasonically shaking the container in an ultrasonic device, and reacting under vacuum environment to obtain the composite material. USE - The method is useful for preparing graphene oxide-polyethyleneimine composite material. ADVANTAGE - The prepared composite material has wrinkle structure, larger specific surface area in comparison with graphene and multiple adsorption sites, which can be used for absorbing carbon dioxide and ammonia gas. DETAILED DESCRIPTION - Preparing graphene oxide-polyethyleneimine composite material, comprises (i) preparing polyethyleneimine aqueous solution with its concentration is controlled at 1 g/l, (ii) mixing the prepared polyethyleneimine aqueous solution with graphene oxide in a volume ratio of 1:1 in a container, (iii) placing the container in an ultrasonic device, and ultrasonically shaking, (iv) adding advanced prepared aqueous solution of concentrated agent 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride (EDC) into the container, (v) placing the container in the ultrasonic device, and ultrasonically vibrating, and (vi) placing the container under vacuum environment, and reacting to obtain the composite material.