The Synthesis, Characterization and Optical Properties of Nanocrystallined Cerium Dioxide by the Hydrothermal Method

Abstract

Nano-sized cerium dioxides (CeO₂) are prepared by the hydrothermal method, using nitric cerium. The XRD study shows that nano-sized CeO₂ has an appreciable amount of cubic phase. The nano-sized CeO₂ obtained has an average particle size in the range of 4.5–10.3 nm. TEM micrographs show well-dispersed spherical-like and cubic-like CeO₂ nanoparticles. The UV–DRS absorption spectrum for alkali-treated CeO₂ shows an absorption peak at 365～384 nm.