The features of a high-temperature synthesis of zro2 in a core-shell zro2@c structure

Alexander M. Volodin, Vladimir O. Stoyanovskii, Vladimir I. Zaikovskii, Roman M. Kenzhin, Aleksey A. Vedyagin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Zirconium oxide was obtained via traditional precipitation from a ZrOCl2 solution with ammonia followed by drying at 110 °C. The carbon-coated samples were synthesized by calcination of the pristine zirconia mixed with polyvinylalcohol. The obtained ZrO2@C samples of core-shell structure as well as the reference samples of pristine zirconia were calcined at different temperatures from 500 to 1400 °C. All the materials were examined by a set of physicochemical methods (a low-temperature argon adsorption, transmission electron microscopy, X-ray diffraction analysis, photoluminescence spectroscopy). It was found that the carbon coating prevents the sintering of the oxide nanoparticles, which allows one to maintain the specific surface area, the size of the oxide core and, finally, stabilize its phase composition. Transformation of the cubic phase into monoclinic phase becomes significantly complicated. Thus, 40% of the cubic phase was detected even after calcination of the ZrO2@C sample at 1400 °C. Moreover, the carbon-coated samples treated at elevated temperatures with subsequent removal of the carbon shell were found to possess the highest concentration of the defects related to a presence of the anion vacancies in zirconia.

Original languageEnglish
Title of host publicationMaterial Science and Engineering Technology VII
EditorsYing Tan, Ramesh K. Agarwal
PublisherTrans Tech Publications Ltd
Pages133-137
Number of pages5
ISBN (Print)9783035715392
DOIs
Publication statusPublished - 1 Jan 2019
Externally publishedYes
Event7th International Conference on Material Science and Engineering Technology, ICMSET 2018 - Beijing, China
Duration: 20 Oct 201822 Oct 2018

Publication series

NameMaterials Science Forum
Volume950 MSF
ISSN (Print)0255-5476

Conference

Conference7th International Conference on Material Science and Engineering Technology, ICMSET 2018
CountryChina
CityBeijing
Period20.10.1822.10.18

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Keywords

  • Carbon nanoreactor
  • Core-shell structure
  • Cubic phase
  • Thermal stability
  • Zirconia

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Volodin, A. M., Stoyanovskii, V. O., Zaikovskii, V. I., Kenzhin, R. M., & Vedyagin, A. A. (2019). The features of a high-temperature synthesis of zro2 in a core-shell zro2@c structure. In Y. Tan, & R. K. Agarwal (Eds.), Material Science and Engineering Technology VII (pp. 133-137). (Materials Science Forum; Vol. 950 MSF). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/MSF.950.133