▎ 摘　　要

NOVELTY - Preparing bionic structure ultra-light carbon aerogel comprises e.g. (i) adding konjac glucomannan into the graphene oxide aqueous solution, stirring and performing high static pressure treatment to obtain a konjac glucomannan-graphene oxide mixed solution; (ii) cooling konjac glucomannan-graphene oxide mixed solution in a refrigerator, pre-cooling, freezing, freeze-drying and drying to obtain konjac glucomannan-graphene oxide dried body; (iii) treating Konjac glucomannan-graphene oxide dried body at high temperature in a nitrogen atmosphere, and cooling to obtain konjac glucomannan-graphene carbon aerogel; and (iv) adding konjac glucomannan-graphene carbon aerogel into titanium sulfate aqueous solution, stirring, transferring into polytetrafluoroethylene stainless steel reactor to a constant temperature hydrothermal reaction at 180-220 degrees C for 10-15 hours, cooling naturally to obtain hydrothermal product, washing obtained hydrothermal product and drying under vacuum. USE - The method is useful for preparing bionic structure ultra-light carbon aerogel. ADVANTAGE - The method: provides synergistic effect of adsorption and catalytic degradation under the radioactive wastewater system; and produces aerogel with dual functions of adsorption and catalysis. DETAILED DESCRIPTION - Preparing bionic structure ultra-light carbon aerogel comprises (i) adding konjac glucomannan into the graphene oxide aqueous solution, stirring for 10-15 minutes, adding vacuum packaging bag for vacuum packaging, controlling vacuum degree at 0.1 MPa, adding vacuum packaging bag into a high static pressure processing equipment, sealing the pressure cavity, and performing high static pressure treatment under pressure to obtain a konjac glucomannan-graphene oxide mixed solution; (ii) cooling konjac glucomannan-graphene oxide mixed solution in a refrigerator at 0-4 degrees C for 0.5-1 hour, pre-cooling, freezing in an ice mold directional freezing device until the konjac glucomannan-graphene oxide mixed solution solidifies into a frozen body, freeze-drying at 60-70 degrees C under vacuum of 1-6 Pa, and drying for 2-3 days to obtain konjac glucomannan-graphene oxide dried body; (iii) treating Konjac glucomannan-graphene oxide dried body at high temperature in a nitrogen atmosphere, and cooling to obtain konjac glucomannan-graphene carbon aerogel; and (iv) adding konjac glucomannan-graphene carbon aerogel into titanium sulfate aqueous solution, stirring, transferring into polytetrafluoroethylene stainless steel reactor to a constant temperature hydrothermal reaction at 180-220 degrees C for 10-15 hours, cooling naturally to obtain hydrothermal product, washing obtained hydrothermal product and drying under vacuum.