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 language | English |
|---|---|
| Title of host publication | Material Science and Engineering Technology VII |
| Editors | Ying Tan, Ramesh K. Agarwal |
| Publisher | Trans Tech Publications Ltd |
| Pages | 133-137 |
| Number of pages | 5 |
| ISBN (Print) | 9783035715392 |
| DOIs | |
| Publication status | Published - 1 Jan 2019 |
| Externally published | Yes |
| Event | 7th International Conference on Material Science and Engineering Technology, ICMSET 2018 - Beijing, China Duration: 20 Oct 2018 → 22 Oct 2018 |
Publication series
| Name | Materials Science Forum |
|---|---|
| Volume | 950 MSF |
| ISSN (Print) | 0255-5476 |
Conference
| Conference | 7th International Conference on Material Science and Engineering Technology, ICMSET 2018 |
|---|---|
| Country | China |
| City | Beijing |
| Period | 20.10.18 → 22.10.18 |
Fingerprint
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
The features of a high-temperature synthesis of zro2 in a core-shell zro2@c structure. / Volodin, Alexander M.; Stoyanovskii, Vladimir O.; Zaikovskii, Vladimir I.; Kenzhin, Roman M.; Vedyagin, Aleksey A.
Material Science and Engineering Technology VII. ed. / Ying Tan; Ramesh K. Agarwal. Trans Tech Publications Ltd, 2019. p. 133-137 (Materials Science Forum; Vol. 950 MSF).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - The features of a high-temperature synthesis of zro2 in a core-shell zro2@c structure
AU - Volodin, Alexander M.
AU - Stoyanovskii, Vladimir O.
AU - Zaikovskii, Vladimir I.
AU - Kenzhin, Roman M.
AU - Vedyagin, Aleksey A.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - 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.
AB - 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.
KW - Carbon nanoreactor
KW - Core-shell structure
KW - Cubic phase
KW - Thermal stability
KW - Zirconia
UR - http://www.scopus.com/inward/record.url?scp=85067803022&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067803022&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/MSF.950.133
DO - 10.4028/www.scientific.net/MSF.950.133
M3 - Conference contribution
SN - 9783035715392
T3 - Materials Science Forum
SP - 133
EP - 137
BT - Material Science and Engineering Technology VII
A2 - Tan, Ying
A2 - Agarwal, Ramesh K.
PB - Trans Tech Publications Ltd
ER -