▎ 摘　　要

NOVELTY - Preparing graphene absorption material comprises taking silver nitrate methyl alcohol or ethyl alcohol solution, slowly adding artemisinin medicine, stirring uniformly, illuminating under UV lamp to obtain nano silver colloid solution, washing with ethyl alcohol, centrifuging, drying to obtain nano silver aqueous solution, impregnating single layer of oxidized graphene powder nano silver aqueous solution, ultrasonically processing, drying and irradiating under UV light, where the mass ratio of single layer oxidized graphene powder and nano silver is 100:1-10:1. USE - The graphene absorption material is useful in sewage treatment and air purification. ADVANTAGE - The method: is simple; utilizes easily available raw material sources; has mild reaction conditions; provides absorption material, which has high heat insulation properties utilizes nano silver, which has antibacterial and anti-malarial effects; is environmentally friendly and economical; uses UV to reduce graphene; avoids the usage of hydrazine hydrate or sodium borohydride, thus reducing toxicity; and enables formation of uniform nano silver distributed on graphene surface with high stability and does not easily fall off. DETAILED DESCRIPTION - Preparing graphene absorption material comprises (a) taking 1-100 g/l silver nitrate methyl alcohol or ethyl alcohol solution, slowly adding artemisinin medicine, stirring uniformly, illuminating under UV lamp for 5-60 minutes to obtain nano silver colloid solution, washing with ethyl alcohol, centrifuging, drying to obtain 0.01-100 g/l nano silver aqueous solution, (b) impregnating single layer of oxidized graphene powder in 0.01-100 g/l nano silver aqueous solution, ultrasonically processing for 1-100 minutes, drying, irradiating under 365 nm UV light for 5-10 minutes, where the mass ratio of single layer oxidized graphene powder and nano silver is 100:1-10:1 and (c) repeating the step (b) for 3-5 times.