▎ 摘　　要

NOVELTY - Preparing magnetic cellulose-graphene oxide high-adsorption aerogel adding nanocellulose and chitosan to the lithium bromide aqueous solution, stirring continuously under the condition of 120-140degrees Celsius oil bath until the nanocellulose is completely dissolved, and cooling. The excess lithium bromide is washed with deionized water to obtain a cellulose hydrogel. The cellulose hydrogel is soaked in the nano-ferric tetroxide dispersion for ultrasonic vibration treatment for 30-60 minutes. The cross-linking agent is added and heated and stirred at 50-80degrees Celsius for 20-30 minutes to obtain a magnetic cellulose hydrogel. USE - Method for preparing magnetic cellulose-graphene oxide high-adsorption aerogel. ADVANTAGE - The method has simple process and convenient operation, and the prepared magnetic cellulose-graphene oxide high-adsorption aerogel has large adsorption performance and capacity for heavy metal ion, fuel and other organic substance, and has cost-effective and social benefit. DETAILED DESCRIPTION - Preparing magnetic cellulose-graphene oxide high-adsorption aerogel adding nanocellulose and chitosan to the lithium bromide aqueous solution, stirring continuously under the condition of 120-140degrees Celsius oil bath until the nanocellulose is completely dissolved, cooling. The excess lithium bromide is washed with deionized water to obtain a cellulose hydrogel. The cellulose hydrogel is soaked in the nano-ferric tetroxide dispersion for ultrasonic vibration treatment for 30-60 minutes. The cross-linking agent is added and heated and stirred at 50-80degrees Celsius for 20-30 minutes to obtain a magnetic cellulose hydrogel. The graphene oxide is ground and sieved, dispersed into deionized water, and ultrasonically treated for 1-2 hours to obtain a graphene oxide suspension. The polyamide propylene oxide resin is added to the graphene oxide suspension to obtain a mixed solution. The mixed solution is reacted at 95-110degrees Celsius for 2-3 hours to obtain a graphene oxide hydrogel. The magnetic cellulose hydrogel and the graphene oxide hydrogel are mixed, ultrasonic oscillation is carried out for 40-90 minutes to obtain the magnetic cellulose-graphene oxide hydrogel. The magnetic cellulose-graphene oxide hydrogel is freeze-dried at -60degrees Celsius for 30-50 hours and the vacuum degree is 3-4 pascal to obtain the magnetic cellulose-graphene oxide aerogel.