A Mild Post-Synthesis Oxidative Treatment of Pd-In/HOPG Bimetallic Catalysts as a Tool of Their Surface Structure Fine Tuning | Sciact - CRIS-system of Boreskov Institute of Catalysis

A Mild Post-Synthesis Oxidative Treatment of Pd-In/HOPG Bimetallic Catalysts as a Tool of Their Surface Structure Fine Tuning Full article

Journal

Applied Surface Science
ISSN: 0169-4332

Output data

Year: 2022, Volume: 571, Article number : 151350, Pages count : 10 DOI: 10.1016/j.apsusc.2021.151350

Tags

Synchrotron radiation-based photoelectron spectroscopy; Scanning tunneling microscopy; O2-induced segregation; Model catalyst; Intermetallic compound; Pd-In bimetallic system

Authors

Panafidin M.A. ¹ , Bukhtiyarov A.V. ¹ , Prosvirin I.P. ¹ , Chetyrin I.A. ¹ , Klyushin A.Yu. ^2,3 , Knop-Gericke A. ^2,4 , Smirnova N.S. ^1,5 , Markov P.V. ^1,5 , Mashkovsky I.S. ⁵ , Zubavichus Y.V. ¹ , Stakheev A.Yu. ⁵ , Bukhtiyarov V.I. ¹

Affiliations

1	G. K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russian Federation
2	Fritz Haber Institute of the Max Planck Society, 14195 Berlin, Germany
3	Helmholtz Center for Materials and Energy, 12489 Berlin, Germany
4	Max Planck Institute for Chemical Energy Conversion, Department of Heterogeneous Reactions, 45470 Mülheim an der Ruhr, Germany
5	N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation

Funding (1)

Russian Science Foundation

19-13-00285

Intermetallic Pd-In particles formation and their deliberate post-synthesis modification by oxidative treatments under carefully controlled conditions have been investigated by the combination of synchrotron radiation-based photoelectron spectroscopy and scanning tunneling microscopy. It is demonstrated that a prolonged contact of Pd-In/HOPG samples with air led to a partial decomposition of intermetallic particles giving rise to the formation of Pd0 species homogeneously distributed over bulk, surface indium hydroxide and subsurface indium oxide. A mild oxidative treatment (0.25 mbar O2, 150 °C) leads to the indium surface segregation and formation of indium oxide homogeneously distributed over the depth and metallic Pd predominantly localized in the interior. The indium oxide component becomes surface localized upon further temperature increase to 200 °C.

Panafidin M.A. , Bukhtiyarov A.V. , Prosvirin I.P. , Chetyrin I.A. , Klyushin A.Y. , Knop-Gericke A. , Smirnova N.S. , Markov P.V. , Mashkovsky I.S. , Zubavichus Y.V. , Stakheev A.Y. , Bukhtiyarov V.I.
A Mild Post-Synthesis Oxidative Treatment of Pd-In/HOPG Bimetallic Catalysts as a Tool of Their Surface Structure Fine Tuning
Applied Surface Science. 2022. V.571. 151350 :1-10. DOI: 10.1016/j.apsusc.2021.151350 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Jul 15, 2021
Accepted:	Sep 18, 2021
Published online:	Sep 27, 2021
Published print:	Jan 1, 2022

Web of science:	WOS:000722701400003
Scopus:	2-s2.0-85115927835
Elibrary:	47099108
Chemical Abstracts:	2021:2166225
OpenAlex:	W3204622858

DB	Citing
Scopus	10
Elibrary	8
Web of science	9
OpenAlex	9