Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10632036 | Materials Research Bulletin | 2005 | 6 Pages |
Abstract
Nanocrystalline ceria (CeO2) particles have been successfully prepared by microwave-assisted heating technique from an aqueous solution containing ammonium Ce(IV) nitrate and sodium hydroxide. Further thermal treatment of the as-prepared powder at 500 °C resulted in the formation of the well-crystallized CeO2 nanoparticles with an average crystal size of about 8 nm, varying with the heating temperature. The as-prepared powder and the CeO2 nanoparticles were examined using X-ray diffraction (XRD) and transmission electron microscope (TEM) techniques. It was found that the morphologies of the synthesized powder show from rod-like for the as-prepared sample to sphere-like for the heat-treated nanoparticles. Mechanism of CeO2 nanocrystallite growth during annealing is primarily investigated.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Huaming Yang, Chenghuan Huang, Aidong Tang, Xiangchao Zhang, Wuguo Yang,