Preparation of Silver Particles by Spray-pyrolysis Technique

Abstract

Preparation of spherical silver particles was examined by using spray-pyrolysis technique from AgNO₃ solution. The solvent was a mixture of H₂O and C₂H₅OH (25-100 vol%). Although Ag particles were produced by pyrolysis above 650°C, the particles became solid and spheikir when the pyrolysis was done at temperatures higher than melting point of silver. The particle sizes were determined mainly by the degree of the splitting of atomized droplets during the heating process.