▎ 摘　　要

NOVELTY - Preparing multi-spectral composite absorbing agent comprises (i) dissolving graphene oxide in absolute ethanol, pouring into a flask, and placing the flask in an oil bath, and adding ammonia-based silicone modifier and reacting to obtain modified graphene oxide, (ii) dispersing the obtained modified graphene oxide in ethylene glycol to obtain modified graphene oxide dispersion; mixing iron(III) chloride hexahydrate, acetate and polyethylene glycol and then adding modified graphene oxide dispersion to stirring, and (iii) carrying out hydrothermal reaction using ethylene glycol as a solvent to obtain ferric oxide-modified modified graphene oxide composite absorbing agent. USE - The method is useful for preparing multi-spectral composite absorbing agent. DETAILED DESCRIPTION - Preparing multi-spectral composite absorbing agent comprises (i) dissolving graphene oxide in absolute ethanol, pouring into a flask, and placing the flask in an oil bath, and adding ammonia-based silicone modifier and reacting to obtain modified graphene oxide, (ii) dispersing the obtained modified graphene oxide in ethylene glycol to obtain modified graphene oxide dispersion; mixing iron(III) chloride hexahydrate, acetate and polyethylene glycol and then adding modified graphene oxide dispersion to stirring, and (iii) carrying out hydrothermal reaction using ethylene glycol as a solvent to obtain ferric oxide-modified modified graphene oxide composite absorbing agent.