Method for preparing silver/graphene antimicrobial composite material

The invention provides a method for preparing a silver/graphene antimicrobial composite material, and the method provided by the invention comprises the following steps: a) providing a reductive graphene oxide-sodium polystyrene sulfate composite solution; b) heating the composite solution obtained in the step a) to 50-70 DEG C; and c) adding a silver nitrate solution into the heated composited solution obtained in the step b) for reaction, thus obtaining the silver/graphene antimicrobial composite material. The invention provides the method for preparing the silver/graphene antimicrobial composite material; and in the method, a reductive graphene oxide tablet is taken as a reducing agent for carrying out reduction on silver ions under a neutral pH condition so as to generate silver nano particles. In the method provided by the invention, no sodium borohydride is taken as a reducing agent, and in the whole preparation process, no potassium hydroxide is adopted, therefore, when the composite material prepared by the method is subjected to later application, no large biological irritant is caused. In addition, antibacterial experiments show that the silver/graphene antimicrobial composite material provided by the invention has a better antibacterial effect.