Hydrogen migration at restructuring palladium–silver oxide boundaries dramatically enhances reduction rate of silver oxide

Christopher R. O’Connor, Matthijs A. Spronsen, Tobias Egle, Fang Xu, Heath R. Kersell, Judit Oliver-Meseguer, Mustafa Karatok, Miquel Salmeron, Robert J. Madix and Cynthia M. Friend ()
Additional contact information
Christopher R. O’Connor: Harvard University
Matthijs A. Spronsen: Harvard University
Tobias Egle: Harvard University
Fang Xu: Harvard University
Heath R. Kersell: Materials Sciences Division, Lawrence Berkeley National Laboratory
Judit Oliver-Meseguer: Materials Sciences Division, Lawrence Berkeley National Laboratory
Mustafa Karatok: Harvard University
Miquel Salmeron: Materials Sciences Division, Lawrence Berkeley National Laboratory
Robert J. Madix: Harvard University
Cynthia M. Friend: Harvard University

Nature Communications, 2020, vol. 11, issue 1, 1-6

Abstract: Abstract Heterogeneous catalysts are complex materials with multiple interfaces. A critical proposition in exploiting bifunctionality in alloy catalysts is to achieve surface migration across interfaces separating functionally dissimilar regions. Herein, we demonstrate the enhancement of more than 104 in the rate of molecular hydrogen reduction of a silver surface oxide in the presence of palladium oxide compared to pure silver oxide resulting from the transfer of atomic hydrogen from palladium oxide islands onto the surrounding surface formed from oxidation of a palladium–silver alloy. The palladium–silver interface also dynamically restructures during reduction, resulting in silver–palladium intermixing. This study clearly demonstrates the migration of reaction intermediates and catalyst material across surface interfacial boundaries in alloys with a significant effect on surface reactivity, having broad implications for the catalytic function of bimetallic materials.

Date: 2020
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/s41467-020-15536-x Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-15536-x

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-020-15536-x

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().