▎ 摘　　要

NOVELTY - Preparing graphene oxide-Salix-konjac-cyclodextrin composite material involves taking Salix, peeling and crushing over 50-100 mesh sieve and drying at 80-100 degrees C and cooling to obtain sand willow wood flour. The willow sand powder is added to the autoclave, followed by the addition of anhydrous ethanol-acetic acid mixture in mass ratio of 1:10, where amount of acetic acid is 3-5 wt.%. The reaction mixture is heated at 100-160 degrees C, and stirred for 1-5 hours. The reaction mixture is cooled, filtered, washed with anhydrous ethanol for 2-5 times and deionized water. USE - Method for preparing graphene oxide-Salix-konjac-cyclodextrin composite material as adsorbing or biological material (claimed). ADVANTAGE - The method enables to prepare graphene oxide-Salix-konjac-cyclodextrin composite material in cost effective manner which has important application value. DETAILED DESCRIPTION - Preparing graphene oxide-Salix-konjac-cyclodextrin composite material involves taking Salix, peeling and crushing over 50-100 mesh sieve and drying at 80-100 degrees C and cooling to obtain sand willow wood flour. The willow sand powder is added to the autoclave, followed by the addition of anhydrous ethanol-acetic acid mixture in mass ratio of 1:10, where amount of acetic acid is 3-5 wt.%. The reaction mixture is heated at 100-160 degrees C, and stirred for 1-5 hours. The reaction mixture is cooled, filtered, washed with anhydrous ethanol for 2-5 times and deionized water. The washed product is dried to obtain Salix Cellulose. The sakix cellulose is dispersed in deionized water in mas ratio of 1:50, followed by the addition of beta -cyclodextrin, mixed and stirred uniformly. 1-100 g/L sodium periodate is added and treated at 50-80 degrees C under the dark reaction for 60-300 minutes and repeatedly washed with deionized water, and dried to obtain salix- beta -cyclodextrin composite material. The konjac flour dispersed in deionized water at room temperature, in mass ratio of 1:50. The glutaraldehyde and konjac flour aqueous solution are mixed in volume ratio of 1:10, followed by the addition of 1-100 g/L polyamide-polyamidoamine aqueous solution, where volume ratio of polyamidoamine aqueous solution and konjac flour aqueous solution is 1:1-1:10. The reaction mixture is treated for 24 hours, washed with distilled water and ethanol, and dried to obtain polyamidoamine modified konjak. 40-50 wt.% salix- beta -cyclodextrin composite and 40-50 wt.% polyamidoamine modified konjac, 1-20 wt.% graphene oxide and 1-5 wt.% porogen are dispersed in deionized water in liquor ratio of 1:50. The reaction mixture is ultrasonically mixed and stirred at room temperature for 24 hours. The reaction mixture is and poured into the mold into the liquid nitrogen and treated for 1 minute. The mixture is removed and placed in at -20 degrees C for 6 hours, and in cryogenic refrigerator at -80 degrees C for 6 hours. The mixture is placed in freeze-dryer for 48 hours to obtain desired product.