Publication result detail

Sintering of Ce, Sm, and Pr Oxide Nanorods

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

Original Title

Sintering of Ce, Sm, and Pr Oxide Nanorods

English Title

Sintering of Ce, Sm, and Pr Oxide Nanorods

Type

WoS Article

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.

English 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

Key words in English

synthesis, sintering, ceria, samaria, praseodymia, nanorods

Authors

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

RIV year

2017

Released

01.04.2016

Publisher

The American Chemical Society

ISBN

0002-7820

Periodical

JOURNAL OF THE AMERICAN CERAMIC SOCIETY

Volume

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

Full text in the Digital Library

http://hdl.handle.net/

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"
}