A silver nanoparticle with good monodispersity was produced by a convenient method for the reduction of silver nitrate in the presence of poly(vinyl pyrrolidone) as the surface modification agent. Silver nanoparticle had little effect on the chemical structure of poly(vinyl pyrrolidone). Silver nanoparticle modified by poly(vinyl pyrrolidone) with a nanosize of 5-10 nm had a face-centered cubic (FCC) crystalline structure and silver nanoparticle could develop a spherical morphology. Pure poly(vinyl pyrrolidone) have little antibacterial effect ...
