A mild post-synthesis oxidative treatment of Pd-In/HOPG bimetallic catalysts as a tool of their surface structure fine tuning

A mild post-synthesis oxidative treatment of Pd-In/HOPG bimetallic catalysts as a tool of their surface structure fine tuning Научная публикация

Журнал

Applied Surface Science
ISSN: 1873-5584 , E-ISSN: 0169-4332

Вых. Данные

Год: 2022, Том: 571, Номер статьи : 151350, Страниц : DOI: 10.1016/j.apsusc.2021.151350

Авторы

Panafidin M.A. ¹ , Bukhtiyarov A.V. ¹ , Prosvirin I.P. ¹ , Chetyrin I.A. ¹ , Yu Klyushin A. ^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

Организации

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

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. , Yu Klyushin A. , 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 . DOI: 10.1016/j.apsusc.2021.151350 WOS Scopus OpenAlex

Web of science:	WOS:000722701400003
Scopus:	2-s2.0-85115927835
OpenAlex:	W3204622858

БД	Цитирований
OpenAlex	11
Scopus	11
Web of science	10