▎ 摘　　要

NOVELTY - Preparing cellulose/silk magnetic porous composite material based on graphene/silver nano wire comprises e.g. preparing 1-100 g/l dopamine tris-hydrochloric acid buffer, adjusting the pH to 8.5, soaking cellulose in the above buffer at room temperature for 24 hours, then dissolving in deionized water, stirring, adding solution of calcium chloride, ultrasonic mixing, adding liquid nitrogen, formulating the silver nano wire, adding amino terminated hyperbranched polymer solution, stirring, washing, suction filtering and vacuum drying to obtain final product. USE - The cellulose/silk magnetic porous composite material is useful as photoelectric material, adsorption material, medical material and biological material. ADVANTAGE - The cellulose/silk magnetic porous composite material has excellent mechanical strength. DETAILED DESCRIPTION - Preparing cellulose/silk magnetic porous composite material based on graphene/silver nano wire comprises (i) preparing 1-100 g/l dopamine tris-hydrochloric acid buffer, adjusting the pH to 8.5, soaking cellulose in the above buffer at room temperature for 24 hours, the liquor ratio is 1:50, repeating washing with deionized water to obtain polydopamine modified cellulose, (ii) dissolving the silk protein in deionized water, adding into 1-100 g/l aqueous solution, reacting at 50-80 degrees C under the conditions, dropping 1-100 g/l ferric salt solution into the silk protein solution slowly, stirring, where the mass ratio between silk protein and ferric salt is 1:1-10:1, adding a solution of calcium chloride at a concentration of 1-5 wt.% at a rate of 30 drops/minutes, adjusting the pH value to 10-12, uniform stirring at 60 degrees C for 1 hours, adding into step one of the polydopamine modified cellulose, ultrasonic mixing, pouring into the mold, adding liquid nitrogen in 1 minutes, placing in freezer, pre-frozen at -20 degrees C for 6 hours, placing in thermo cryogenic refrigerator freezer at -80 degrees C for 6 hours, then placing in a lyophilizer machine for 48 hours to obtain cellulose/silk magnetic porous composite material, (iii) formulating the silver nano wire into 1-10 g/l aqueous solution, then adding 1-10 g/l amino terminated hyperbranched polymer solution, the volume ratio between amino-terminated hyperbranched polymer and silver nano wire aqueous solution is 1:1-1:10, stirring the reaction at room temperature for 24 hours, washing repeatedly with deionized water and ethanol, drying to obtain amino-terminated hyperbranched polymer modified silver nano wire, (iv) impregnating 1-10 g/l terminal amino hyperbranched polymer modified silver nano wire aqueous solution in the cellulose/silk magnetic porous composite for 10-60 minutes, bath ratio is 1:10, washing with deionized water repeatedly and drying, then immersing the above-mentioned magnetic porous composite material in 1-10 g/l graphene oxide aqueous solution for 10-60 minutes, bath ratio is 1:10, removing and rinsing repeatedly with deionized water, drying to obtain silver nanowire/graphene oxide has been assembled on the surface of the magnetic porous composite material layer, mixing with graphene oxide finishing fluid to repeat the above operation, according to the need to determine the magnetic porous composite surface silver nano wire/graphene oxide layer assembly, finally placing in the reducing agent for reduction, washing, suction filtering and vacuum drying to obtain final product. An INDEPENDENT CLAIM is also included for graphene/silver nanowire-based cellulose/silk magnetic porous composite material obtained by above method.