Oxygen Mobility and Surface Reactivity of PrNi1 − xCoxO3 − δ Perovskites and Their Nanocomposites with Ce0.9Y0.1O2 − δ by Temperature-Programmed Isotope Exchange Experiments Full article
| Journal |
Solid State Ionics
ISSN: 0167-2738 |
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| Output data | Year: 2015, Volume: 273, Pages: 35-40 Pages count : 6 DOI: 10.1016/j.ssi.2014.11.021 | ||||||
| Tags | Co-doped praseodimium nickelate, Isotope exchange, Mixed ionic-electronic conducting nanocomposites, Oxygen diffusion, Surface reactivity, Y-doped ceria | ||||||
| Authors |
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| Affiliations |
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Funding (1)
| 1 | The Ministry of Education and Science of the Russian Federation | 14.740.12.1357 |
Abstract:
Cobalt-doped praseodimium nickelates PrNi1 − xCoxO3 − δ and Y/(Pr, Y)-doped ceria oxides were synthesized via Pechini route. Nanocomposites were prepared via ultrasonic dispersion of the mixture of perovskite and fluorite nanopowders in isopropanol with addition of polyvinyl butyral followed by drying, pressing and sintering at 1000–1100 °C. The oxygen mobility and reactivity of perovskites, fluorites and powdered composites obtained by crushing and milling of pellets were estimated by oxygen isotope heteroexchange with 18O2 and C18O2 using both closed and flow (SSITKA) reactors in the temperature-programmed (TPIE) mode. Co-existence of two routes of oxygen bulk diffusion—the fast one and the slow one in perovskites and composites was revealed. In perovskites, the fast oxygen diffusion is a minor channel related to some defects in their structure. In composites, the fast oxygen diffusion is the main route being related to both phases disordered due to cation redistribution between them, first of all, to fluorite-like domains of Pr,Y-doped ceria and perovskite/fluorite interfaces.
Cite:
Sadykov V.
, Eremeev N.
, Sadovskaya E.
, Bobin A.
, Ishchenko A.
, Pelipenko V.
, Muzykantov V.
, Krieger T.
, Amanbaeva D.
Oxygen Mobility and Surface Reactivity of PrNi1 − xCoxO3 − δ Perovskites and Their Nanocomposites with Ce0.9Y0.1O2 − δ by Temperature-Programmed Isotope Exchange Experiments
Solid State Ionics. 2015. V.273. P.35-40. DOI: 10.1016/j.ssi.2014.11.021 WOS Scopus РИНЦ ANCAN OpenAlex
Oxygen Mobility and Surface Reactivity of PrNi1 − xCoxO3 − δ Perovskites and Their Nanocomposites with Ce0.9Y0.1O2 − δ by Temperature-Programmed Isotope Exchange Experiments
Solid State Ionics. 2015. V.273. P.35-40. DOI: 10.1016/j.ssi.2014.11.021 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Submitted: | Jun 15, 2014 |
| Accepted: | Nov 15, 2014 |
| Published online: | Nov 27, 2014 |
| Published print: | May 1, 2015 |
Identifiers:
| Web of science: | WOS:000353929000008 |
| Scopus: | 2-s2.0-84937645262 |
| Elibrary: | 23992013 |
| Chemical Abstracts: | 2014:1997539 |
| Chemical Abstracts (print): | 163:529800 |
| OpenAlex: | W2035796137 |