▎ 摘　　要

NOVELTY - Preparation of graphene oxide/iron oxide/silver nanocomposite absorbing material involves mixing 0.2-2 mg/ml graphene oxide aqueous and 0.5-5 mol/L sodium hydroxide aqueous solution, heating at 30-50 degrees C for 10 minutes under water bath condition, adjusting pH to 9-12, further heating to 60-80 degrees C for 2-3 hours, centrifuging and obtaining black precipitate, washing precipitate 3-5 times using deionized water, adding silver nitrate, stirring for 20 minutes, adding sodium borohydride dissolved in 50-200 ml water, and heating at 20-100 degrees C for 0.5-2 hours. USE - Preparation of graphene oxide/iron oxide/silver nanocomposite absorbing material (claimed). ADVANTAGE - The method efficiently and economically provides graphene oxide/iron oxide/silver nanocomposite absorbing material effectively adsorbs different wavelengths. DETAILED DESCRIPTION - Preparation of graphene oxide/iron oxide/silver nanocomposite absorbing material involves mixing 0.2-2 mg/ml graphene oxide aqueous and 0.5-5 mol/L sodium hydroxide aqueous solution in mass ratio of 1:x:(0.8-1.8)x, where x is 0.1-10, heating at 30-50 degrees C for 10 minutes under water bath condition, adjusting pH to 9-12, further heating to 60-80 degrees C for 2-3 hours, centrifuging and obtaining black precipitate, washing precipitate 3-5 times using deionized water, adding silver nitrate, stirring for 20 minutes, adding sodium borohydride dissolved in 50-200 ml water, heating at 20-100 degrees C for 0.5-2 hours, washing obtained product using deionized water and ethanol, magnetically-separating, centrifuging or filtering and obtaining black precipitate, and vacuum-drying precipitate at 40-80 degrees C.