Detail publikačního výsledku

Sintering of Ce, Sm, and Pr Oxide Nanorods

ČÁSTKOVÁ, K.; MATOUŠEK, A.; BARTONÍČKOVÁ, E.; CIHLÁŘ, J.; VANÝSEK, P.; CIHLÁŘ, J.

Originální název

Sintering of Ce, Sm, and Pr Oxide Nanorods

Anglický název

Sintering of Ce, Sm, and Pr Oxide Nanorods

Druh

Článek WoS

Originální abstrakt

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.

Anglický abstrakt

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.

Klíčová slova

synthesis, sintering, ceria, samaria, praseodymia, nanorods

Klíčová slova v angličtině

synthesis, sintering, ceria, samaria, praseodymia, nanorods

Autoři

ČÁSTKOVÁ, K.; MATOUŠEK, A.; BARTONÍČKOVÁ, E.; CIHLÁŘ, J.; VANÝSEK, P.; CIHLÁŘ, J.

Rok RIV

2017

Vydáno

01.04.2016

Nakladatel

The American Chemical Society

ISSN

0002-7820

Periodikum

JOURNAL OF THE AMERICAN CERAMIC SOCIETY

Svazek

99

Číslo

4

Stát

Spojené státy americké

Strany od

1155

Strany do

1163

Strany počet

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"
}