Preparation and Characterization of Monodisperse Cerium Oxide Nanoparticles in Hydrocarbon Solvents
Uniform-sized monodisperse cerium oxide nanoparticles were prepared in a one-step reaction. A cerium−oleate complex was heated in an organic solvent with high boiling point to decompose and form nanocrystals. The products were characterized by Raman spectroscopy, XRD, UV−visible spectroscopy, room-temperature photoluminescence spectroscopy, and TEM. The TEM images and UV−visible spectra show that the CeO2 particles prepared are uniform nanosized and absorb UV light in the range of 250−400 nm. The size of the nanoparticles prepared can be controlled from 5 to 20 nm by choice of solvent, reaction time, and reactant concentration without any size sorting. The nanoparticles show a strong violet/blue emission at 400 nm in photoluminescence spectrum (PL). The PL emission was found to be sensitive to the particle size.
Soucek, Mark, "Preparation and Characterization of Monodisperse Cerium Oxide Nanoparticles in Hydrocarbon Solvents" (2007). Polymer Engineering Faculty Research. 1885.