The Activity and Thermal Stability of RhOx/CeO2 Nanocomposites Prepared by Radio-Frequency Plasma Sputtering | Sciact - CRIS-система Института катализа

The Activity and Thermal Stability of RhOx/CeO2 Nanocomposites Prepared by Radio-Frequency Plasma Sputtering Научная публикация

Конференция

18th European Conference on Applications of Surface and Interface Analysis
15-20 сент. 2019 , Dresden

Журнал

Surface and Interface Analysis
ISSN: 0142-2421 , E-ISSN: 1096-9918

Вых. Данные

Год: 2020, Том: 52, Номер: 12, Страницы: 818-822 Страниц : 5 DOI: 10.1002/sia.6879

Ключевые слова

ceria; RF plasma sputtering; rhodium; Rh–CeO2 interaction; XPS

Авторы

Kibis Lidiya S. ^1,2 , Krotova Alena I. ^1,2 , Zaikovskii Vladimir I. ^1,2 , Boronin Andrei I. ^1,2

Организации

1	Departments of Heterogeneous Catalysis and Physicochemical Methods for Catalyst Investigation, Boreskov Institute of Catalysis SB RAS, Lavrentieva 5, Novosibirsk, 630090, Russia
2	Departments of Natural Sciences and Physics, Novosibirsk State University, Pirogova 2, Novosibirsk, 630090, Russia

Информация о финансировании (2)

1	Федеральное агентство научных организаций России	0303-2016-0003
2	Российский фонд фундаментальных исследований	18-43-543009

The model RhOx/CeO2 systems were prepared by radio-frequency (RF) plasma sputtering of Rh electrode in O2 or Ar/O2 atmosphere. Thermal stability of the systems and their reaction probability towards CO oxidation were studied by X-ray photoelectron spectroscopy. It was shown that the small oxidized Rh nanoparticles on the CeO2 surface (RhOx/CeO2) obtained by RF sputtering in O2 have spectroscopic characteristics close to those of Rh3+ ions highly dispersed in ceria lattice. The RhOx/CeO2 system remains stable upon heating in vacuum at 450°C and shows reactivity towards CO oxidation at T > 200°C. RF sputtering in Ar/O2 atmosphere results in the formation of larger rhodium nanoparticles that are close to Rh2O3 oxide. The Rh2O3/CeO2 system demonstrates lower activity in CO oxidation and cannot be reduced at a temperature below 300°C. © 2020 John Wiley & Sons, Ltd.

Kibis L.S. , Krotova A.I. , Zaikovskii V.I. , Boronin A.I.
The Activity and Thermal Stability of RhOx/CeO2 Nanocomposites Prepared by Radio-Frequency Plasma Sputtering
Surface and Interface Analysis. 2020. V.52. N12. P.818-822. DOI: 10.1002/sia.6879 WOS Scopus РИНЦ CAPlus OpenAlex

Поступила в редакцию:	2 окт. 2019 г.
Принята к публикации:	19 авг. 2020 г.
Опубликована online:	28 сент. 2020 г.
Опубликована в печати:	1 дек. 2020 г.

Web of science:	WOS:000573007800001
Scopus:	2-s2.0-85091480879
РИНЦ:	45264717
Chemical Abstracts:	2020:1929899
OpenAlex:	W3089511761

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