Monoguanidine functionalized graphene oxide bactericide as well as preparation method and application thereof

The invention discloses a monoguanidine functionalized graphene oxide bactericide which is prepared by sequentially reacting graphene oxide with a silane guanidine reagent and n-butyl bromide, and the ratio of the graphene oxide to the silane guanidine reagent to the n-butyl bromide is 1g: (8-12) mL: (8-12) mL. According to the bactericide, graphene oxide serves as a framework, oxygen-containing groups on the surface and the edge of the graphene oxide serve as reaction active sites, a subsequent silane guanidine reagent reacts with the reaction active sites to be grafted to the surface and the edge of the graphene oxide, the silane guanidine reagent and the reaction active sites act synergistically, the antibacterial speed is effectively increased, and the sterilizing effect of the bactericide is improved; moreover, the bactericide is more easily and uniformly dispersed in matrix resin, the phenomenon of aggregation is avoided, the stability is improved during use, the bactericide is not easy to seep out, and