Preparation of high-stable silver nanoparticle dispersion by using sodium alginate as a stabilizer under gamma radiation

摘要

Highly stable silver nanoparticles were successfully synthesized by gamma ray irradiation in the presence of sodium alginate.The silver nanoparticles were characterized by UV-vis spectroscopy,X-ray diffraction(XRD),and transmission electron microscopy(TEM).Their particle sizes were in the range of 6-30 nm.The as-obtained Ag nanoparticle dispersion was stable for over 6 months at room temperature.