Intermetallic Pd-In/HOPG Model Catalysts: Reversible Tuning the Surface Structure by O2-Induced Segregation | Sciact - CRIS-system of Boreskov Institute of Catalysis

Intermetallic Pd-In/HOPG Model Catalysts: Reversible Tuning the Surface Structure by O2-Induced Segregation Full article

Journal

Applied Surface Science
ISSN: 0169-4332

Output data

Year: 2020, Volume: 525, Article number : 146493, Pages count : 8 DOI: 10.1016/j.apsusc.2020.146493

Tags

X-ray photoelectron spectroscopy; Scanning tunneling microscopy; Model catalyst; Pd-In bimetallic system; Intermetallic compound; O2-induced segregation

Authors

Bukhtiyarov A.V. ¹ , Panafidin M.A. ¹ , Chetyrin I.A. ¹ , Prosvirin I.P. ¹ , Mashkovsky I.S. ² , Smirnova N.S. ^1,2 , Markov P.V. ^1,2 , Zubavichus Y.V. ¹ , Stakheev A.Yu. ² , 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	N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 119991 Moscow, Russian Federation

Funding (1)

Russian Science Foundation

19-13-00285

Bimetallic Pd-In/HOPG model catalysts have been prepared and investigated using scanning tunneling microscopy (STM) and X-ray photoelectron spectroscopy (XPS) techniques. The spontaneous formation of intermetallic Pd-In nanoparticles or at least partial In diffusion into Pd particles with emergence of In-Pd surface alloy already at the step of In deposition onto monometallic Pd/HOPG sample has been revealed. An additional cycle of oxidation-reduction treatment is necessary in order to form the uniform Pd-In alloy species. For a series of Pd-In/HOPG model catalysts, we demonstrate that the reversible RedOx transformation Pd-Inintermet ↔ Pd° + InOx can be efficiently used to deliberately tune the nanoparticles surface composition/structure and respective catalytic characteristics.

Bukhtiyarov A.V. , Panafidin M.A. , Chetyrin I.A. , Prosvirin I.P. , Mashkovsky I.S. , Smirnova N.S. , Markov P.V. , Zubavichus Y.V. , Stakheev A.Y. , Bukhtiyarov V.I.
Intermetallic Pd-In/HOPG Model Catalysts: Reversible Tuning the Surface Structure by O2-Induced Segregation
Applied Surface Science. 2020. V.525. 146493 :1-8. DOI: 10.1016/j.apsusc.2020.146493 WOS Scopus РИНЦ ANCAN OpenAlex

Submitted:	Nov 28, 2019
Accepted:	Apr 24, 2020
Published online:	Apr 29, 2020
Published print:	Sep 30, 2020

Web of science:	WOS:000541413600010
Scopus:	2-s2.0-85084417570
Elibrary:	43274331
Chemical Abstracts:	2020:928121
Chemical Abstracts (print):	173:283178
OpenAlex:	W3023685105

DB	Citing
Scopus	14
Web of science	12
Elibrary	10
OpenAlex	14