Generation of silver and lead chromate nanoparticles in Triton N-42 and AOT reversed-micellar solutions

A process is proposed for manufacturing silver and lead nanoparticles in Triton N-42 and AOT solutions in decane. The completion of nanoparticle formation and solution stability were studied spectrophotometrically as functions of the parameters of reversed-micellar systems (the nature and proportion of the surfactant, solubilization capacity, reagent concentrations, and their ratios). Atomic absorption spectroscopy (AAS) and X-ray powder diffraction (XRD) showed that the nanoparticles isolated from Triton N-42 and AOT solutions compositionally correspond to and are isostructural to Ag2CrO4 and PbCrO4. Mean nanoparticle sizes are 15–30 nm as determined by transmission electron microscopy (TEM).