▎ 摘　　要

NOVELTY - Preparing graphene oxide-doped cellulose adsorption material comprises e. g. (i) adding 30-50 pts. wt. dissolving pulp and 1800-2200 pts. wt. deionized water into standard cellulose dissociator, rotating at 9000-11000 revolutions/minute, and performing dissociation to obtain cellulose dissociation solution; (ii) adding 0.5 mol/l sodium hydroxide solution into sodium bromide, 2,2,6,6-tetramethylpiperidin-1-yl)oxyl or (2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl (TEMPO), sodium hypochlorite aqueous solution and the cellulose dissociation solution, adjusting the PH to 10-11, and stirring in a constant temperature water bath at 25 degrees C for 100-150 minutes and obtaining TEMPO oxidized cellulose oxidation solution; and (iii) separating the TEMPO-oxidized cellulose oxidizing solution by water washing, performing suction filtration, where the PH of the slurry is 6.8-7, and homogenizing by high pressure homogenizer 2-4 times. USE - The method is useful for preparing graphene oxide-doped cellulose adsorption material. ADVANTAGE - The material has high porosity, high specific surface area mesopore, and high adsorption capacity. DETAILED DESCRIPTION - Preparing graphene oxide-doped cellulose adsorption material comprises (i) adding 30-50 pts. wt. dissolving pulp and 1800-2200 pts. wt. deionized water into standard cellulose dissociator, rotating at 9000-11000 revolutions/minute, and performing dissociation to obtain cellulose dissociation solution; (ii) adding 0.5 mol/l sodium hydroxide solution into sodium bromide, 2,2,6,6-Tetramethylpiperidin-1-yl)oxyl or (2,2,6,6-tetramethylpiperidin-1-yl)oxidanyl (TEMPO), sodium hypochlorite aqueous solution and the cellulose dissociation solution, adjusting the PH to 10-11, and stirring in a constant temperature water bath at 25 degrees C for 100-150 minutes and obtaining TEMPO oxidized cellulose oxidation solution; (iii) separating the TEMPO-oxidized cellulose oxidizing solution by water washing, performing suction filtration, where the PH of the slurry is 6.8-7, homogenizing by high pressure homogenizer 2-4 times, and concentrating to obtain water dispersion of nanofibrillated cellulose; and (iv) taking 20-30 pts. wt. nanofibrillated cellulose aqueous dispersion, 1-3 pts. wt. polyvinyl alcohol solution, 0.5-1.5 pts. wt. glutaraldehyde and 0.5-1.5 pts. wt. aqueous dispersion of graphene oxide with concentration of 1%, magnetically stirring at 25 degrees C water bath for 10-15 hours, freezing using liquid nitrogen freezing device for 8-12 minutes, drying in freeze dryer for 40-50 hours.