The Role of Metal–Support Interaction in Ag/CeO2 Catalysts for CO and Soot Oxidation | Sciact - CRIS-system of Boreskov Institute of Catalysis

The Role of Metal–Support Interaction in Ag/CeO2 Catalysts for CO and Soot Oxidation Full article

Journal

Applied Catalysis B: Environmental
ISSN: 0926-3373 , E-ISSN: 1873-3883

Output data

Year: 2020, Volume: 260, Article number : 118148, Pages count : 16 DOI: 10.1016/j.apcatb.2019.118148

Tags

Ag/CeO2; CO oxidation; Epitaxial growth of silver particles; Metal–support interaction; Soot combustion

Authors

Grabchenko M.V. ¹ , Mamontov G.V. ¹ , Zaikovskii V.I. ^2,3 , La Parola V. ⁴ , Liotta L.F. ⁴ , Vodyankina O.V. ¹

Affiliations

1	Tomsk State University, 36, Lenin ave., Tomsk, 634050, Russian Federation
2	Boreskov Institute of Catalysis, 5, Lavrentiev ave., Novosibirsk, 630090, Russian Federation
3	Novosibirsk State University, 2, Pirogova Str., Novosibirsk, 630090, Russian Federation
4	Istituto per lo Studio dei Materiali Nanostrutturati (ISMN)-CNR, 153, via Ugo La Malfa, Palermo, 90146, Italy

Funding (2)

1	The Ministry of Education and Science of the Russian Federation	8.2.03.2018
2	Russian Science Foundation	18-73-10109

Ag/CeO2 catalysts with a silver loading of 10 wt.% have been prepared by three different techniques: impregnation, Ag/CeO2 (imp), impregnation of prereduced CeO2, Ag/CeO2 (red-imp), and co-deposition precipitation, Ag-CeO2 (co-DP). The features of the prepared composites have been studied by low-temperature N2 sorption, TGA, XRF, TPR-H2, TEM HR, XPS and Raman spectroscopy. The Raman and XPS results show that the addition of silver to CeO2 significantly increases the defectiveness of CeO2 particles, and such an effect is a function of the preparation method. The Ag-CeO2 (co-DP) and Ag/CeO2 (red-imp) catalysts show enhanced interfacial Ag–CeO2 interaction caused by the epitaxial growth of silver particles (d111 = 2.35 Å) on the CeO2 surface (d111 = 3.1 Å) as well as high amount of oxygen vacancies. A morphology-dependent interplay between the oxygen vacancies and the strength of the Ag–CeO2 interaction has been revealed. Strengthening of the metal–support interaction enhances the catalytic activity of the composites in both CO oxidation and soot combustion. © 2019 Elsevier B.V.

Grabchenko M.V. , Mamontov G.V. , Zaikovskii V.I. , La Parola V. , Liotta L.F. , Vodyankina O.V.
The Role of Metal–Support Interaction in Ag/CeO2 Catalysts for CO and Soot Oxidation
Applied Catalysis B: Environmental. 2020. V.260. 118148 :1-16. DOI: 10.1016/j.apcatb.2019.118148 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jul 24, 2019
Accepted:	Aug 31, 2019
Published online:	Sep 3, 2019
Published print:	Jan 1, 2020

Web of science:	WOS:000496894300021
Scopus:	2-s2.0-85072020161
Elibrary:	41700124
Chemical Abstracts:	2019:1783487
OpenAlex:	W2972014665

DB	Citing
Scopus	197
Web of science	189
Elibrary	198
OpenAlex	205