▎ 摘　　要

NOVELTY - Preparing silver-carrying antibacterial complex material comprises preparing silver loaded graphene quantum dots, ultrasonically stirring, dispersing in ethanol, stirring, adding ethyl orthosilicate, adjusting pH value, reacting, centrifuging, washing with acetone and deionized water, drying the precipitate, adding porous graphene prepared into graphene dispersion solution, stirring graphene dispersion solution, adding silicon dioxide coated silver loaded graphene quantum dot, stirring, transferring to the reactor of polytetrafluoroethylene, incubating, centrifuging, washing and drying. USE - The method is useful for preparing silver-carrying antibacterial complex material (claimed). ADVANTAGE - The method: can better load and fix silver nanoparticles, to prevent its reunion; improves the stability of silver nanoparticles; so that silver nanoparticles have more long-term antibacterial activity; while improving safety; and reduces the use cost. DETAILED DESCRIPTION - Preparing silver-carrying antibacterial complex material comprises (a) preparing silver loaded graphene quantum dots by ultrasonically stirring 50-60 ml graphene quantum dot suspension, adding silver nitrate solution in a dropwise manner, reacting at 45-60 degrees C, adding trisodium citrate solution in a dropwise manner, ultrasonically stirring for 60-120min, aging, washing and drying, to obtain the silver loaded graphene quantum dot, (b) adding 0.1-0.5 g silver loaded graphene quantum dot, ultrasonically stirring and dispersing in ethanol, where the adding volume ratio of water and ammonia water is 3-5:1, stirring uniformly, adding ethyl orthosilicate, adjusting pH value to 10-9, reacting at 20-25 degrees C for 1-3 hours, centrifuging and washing with acetone and deionized water sequentially, to obtain a precipitate, drying the precipitate at 90 degrees C for 3 hours, to obtain silicon dioxide coated silver loaded graphene quantum dot and (c) adding porous graphene prepared into 0.2-0.8 mg/ml graphene dispersion solution, where the solvent is water, acetone and/or dimethyl sulfoxide, ultrasonically stirring 80-100 ml graphene dispersion solution, adding silicon dioxide coated silver loaded graphene quantum dot, ultrasonically stirring for 10-30 minutes, transferring to the reactor of polytetrafluoroethylene, incubating at 80-120 degrees C for 15-30 minutes, cooling, centrifuging, washing and drying. An INDEPENDENT CLAIM is also included for silver-carrying antibacterial complex material prepared by above method.