Synthesis of silver nanoparticles by thermal reduction of sprayed silver salt

Abstract

Silver nanoparticles were synthesized by thermal reduction of sprayed silver salt. This method is based on the reduction of silver salt in droplet as a micro-reactor that allows the synthesized particles of definite sizes. The precursor was the mixture of water, silver nitrate, glucose (reducing agent) and ammonia solution. This procedure is a continuous process that can be verified for mass scale production. The size, size distribution and morphology of the synthesized silver nanoparticles were characterized by UV-Visible spectroscopy, and transmission electron microscopy (TEM). The composition was varied in order to produce stabilized silver nanoparticles with a narrow size distribution without any stabilizer or capping agent. The results indicated the synthesized silver nanoparticles have spherical shape, small size with diameter of 10-20 nm with a narrow particle size distribution. The synthesized silver nanoparticles were fairly stable for a month without any stabilizer.