Production of Concentrate of Ultrafine Ag Particles Coated and Separated by Surfactant Thin Layer

Abstract

Production and concentration of nanometer-sized Ag particles in organic solvents was carried out with surfactant by means of a gas flow-cold trap method combined with gas evaporation technique. Although the concentration process of the colloidal solution caused aggregation of the particles, the isolation of individual particles from each other was maintained very well by the surfactant layer. The preservation of particle size in the concentration process was also checked and verified with an electron microscopy and a photon correlation spectroscopy.