▎ 摘　　要

NOVELTY - Preparation of cross-linked graphene oxide aerogel involves adding graphene oxide to anhydrous N,N-dimethylformamide, ultrasonically dispersing, taking upper layer by centrifugation to obtain 1-5 mg/mL graphene oxide dispersion, adding basic catalyst, adding epichlorohydrin in drops for 1-2 hours, heating to 70-90 degrees C, reacting for 2-8 hours, obtaining epoxidized graphene oxide dispersion, adding amine to the dispersion, stirring at low speed for 24 hours, replacing the solvent with absolute ethanol, carrying out sol-gel process, replacing absolute ethanol every 6 hours, aging for 24 hours, and drying. USE - Preparation of graphene oxide aerogel used as adsorbent in wastewater treatment. ADVANTAGE - The method is simple, and produces aerogel, which has increased adsorption surface area and efficiency, due to the presence of amine, and is easy to remove from wastewater system, and does not cause secondary pollution to water environment, using inexpensive and rich source of raw materials.