Carbon supported Pd-Cu nanoalloys: support and valence band structure influence on reduction and oxidation reactions

The present study has tracked the changes in the electronic and structural properties of Pd-Cu nanoalloys that were influenced by the composition and chosen support. Carbon supported Pd-Cu nanoalloys (Pd x Cu 1− x /C for x = 1, 0.7, 0.5, 0.3 and 0) were subjected to sequential thermal treatments (up...

Full description

Saved in:
Bibliographic Details
Published in:Nanoscale advances 2021-10, Vol.3 (21), p.6138-6143
Main Authors: Castegnaro, Marcus V, Gorgeski, Andreia, Alves, Maria C. M, Morais, Jonder
Format: Article
Language:English
Subjects:
Chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The present study has tracked the changes in the electronic and structural properties of Pd-Cu nanoalloys that were influenced by the composition and chosen support. Carbon supported Pd-Cu nanoalloys (Pd x Cu 1− x /C for x = 1, 0.7, 0.5, 0.3 and 0) were subjected to sequential thermal treatments (up to 450 °C) to induce reduction and oxidation reactions. Valence band photoemission data and in situ XAS results showed that stronger oxygen-metal bonds are formed in Cu-richer samples. A regeneration process assisted by the support was observed during the oxidation reaction, and its reduction efficiency was found to be dependent on the distribution of occupied electronic states near the Fermi level. The present study has tracked the changes in the electronic and structural properties of Pd-Cu nanoalloys that were influenced by the composition and chosen support.
ISSN:2516-0230
2516-0230
DOI:10.1039/d1na00537e