Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1608270 | Journal of Alloys and Compounds | 2015 | 5 Pages |
Abstract
A modified solgel method to synthesize Ce-doped HfO2 nanoparticles was carried out using a precursor material prepared with cerium nitrate, hafnium chloride, citric acid and ethylene glycol. The obtained precursor material was calcined at 500 and 700 °C for 2 h in air. The influence of the concentration of Ce and the calcination temperature was studied to observe the structural and morphological changes of the obtained materials. For the characterization, X-ray diffraction (XRD), transmission electron microscopy (TEM) and Raman scattering (RS) were employed. The XRD patterns shown that the Ce-doped HfO2 undergoes a structural transformation from monoclinic to cubic phase, which is significantly dependent on the Ce content and calcination temperature. TEM images have also confirmed the existence of semispherical nanoparticles with sizes between 6 and 11.5 nm.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
S. Gálvez-Barboza, L.A. González, B.A. Puente-Urbina, E.M. Saucedo-Salazar, L.A. GarcÃa-Cerda,