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ČÁSTKOVÁ, K. MATOUŠEK, A. BARTONÍČKOVÁ, E. CIHLÁŘ, J. VANÝSEK, P. CIHLÁŘ, J.
Original Title
Sintering of Ce, Sm, and Pr Oxide Nanorods
Type
journal article in Web of Science
Language
English
Original Abstract
Synthesis of CeO2, Pr2O3, and Sm2O3 nanorods and their sintering have been investigated. In a strongly alkaline medium, nanorods of CeO2, Pr2O3, and Sm2O3 were prepared from trivalent salts of rare earths (Ce, Pr, Sm) via precipitation synthesis. Nanorods were formed by nanocrystallites of fibrous structure, which were produced by the mechanism of selfarrangement of hexagonal particles of Re(III) hydroxides. The subsequent transformation of hydroxide into oxide proceeded via self-preservation of the rod-like structure. In CeO2, the fibrous structure was noncohesive during thermal treatment at temperature of 500°C and higher. Regardless of the shape of the CeO2 particles (spherical versus rod-like), sintered ceramic was formed by equiaxial grains. The cohesion of the fibrous structure of Pr and Sm oxides was higher than in CeO2. The rod-like shape of the particles of Pr and Sm oxides was (partially) preserved during sintering.
Keywords
synthesis, sintering, ceria, samaria, praseodymia, nanorods
Authors
ČÁSTKOVÁ, K.; MATOUŠEK, A.; BARTONÍČKOVÁ, E.; CIHLÁŘ, J.; VANÝSEK, P.; CIHLÁŘ, J.
Released
1. 4. 2016
Publisher
The American Chemical Society
ISBN
0002-7820
Periodical
Journal of the American Ceramic Society
Year of study
99
Number
4
State
United States of America
Pages from
1155
Pages to
1163
Pages count
9
URL
http://onlinelibrary.wiley.com/doi/10.1111/jace.14087/full
BibTex
@article{BUT121402, author="Klára {Částková} and Aleš {Matoušek} and Eva {Bartoníčková} and Jaroslav {Cihlář} and Petr {Vanýsek} and Jaroslav {Cihlář}", title="Sintering of Ce, Sm, and Pr Oxide Nanorods", journal="Journal of the American Ceramic Society", year="2016", volume="99", number="4", pages="1155--1163", doi="10.1111/jace.14087", issn="0002-7820", url="http://onlinelibrary.wiley.com/doi/10.1111/jace.14087/full" }