Microwave-assisted synthesis of ceria nanoparticles

Journal Article · Thu Oct 06 04:00:00 EDT 2005 · Materials Research Bulletin

DOI:https://doi.org/10.1016/j.materresbull.2005.05.014· OSTI ID:20888091

Huaming, Yang ^[1]; Chenghuan, Huang ^[1]; Aidong, Tang ^[1]; Xiangchao, Zhang ^[1]; Wuguo, Yang ^[1]

---

1. Department of Inorganic Materials, School of Resources Processing and Bioengineering, Central South University, Changsha 410083 (China)

Nanocrystalline ceria (CeO{sub 2}) 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 deg. C resulted in the formation of the well-crystallized CeO{sub 2} nanoparticles with an average crystal size of about 8 nm, varying with the heating temperature. The as-prepared powder and the CeO{sub 2} 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 CeO{sub 2} nanocrystallite growth during annealing is primarily investigated.

• OSTI ID: 20888091
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 10 Vol. 40; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANNEALING
AQUEOUS SOLUTIONS
CERIUM OXIDES
CHEMICAL PREPARATION
CRYSTAL GROWTH
CRYSTALS
HEATING
MICROWAVE RADIATION
MORPHOLOGY
NANOSTRUCTURES
NITRATES
POWDERS
RODS
SODIUM HYDROXIDES
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION