| abstract |
A method of making cerium dioxide nanoparticles includes: a) providing an aqueous reaction mixture having a source of cerous ion, a source of hydroxi de ion, a nanoparticle stabilizer, and an oxidant at an initial temperature no higher than about 2O°C; b) mechanically shearing the mixture and causing it to pass through a perforated screen, thereby forming a suspension of ceri um hydroxide nanoparticles; and c) raising the initial temperature to achiev e oxidation of cerous ion to eerie ion and thereby form cerium dioxide nanop articles having a mean diameter in the range of about 1 nm to about 15 nm. T he cerium dioxide nanoparticles may be formed in a continuous process.</SDOA B> |