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Updated: Aug 28, 2025

Synthesis and Testing of Supported Pt-Cu Solid Solution Nanoparticle Catalysts for Propane Dehydrogenation
Published on: July 18, 2017
Carbon supported Pd-Cu nanoalloys: support and valence band structure influence on reduction and oxidation reactions
Marcus V Castegnaro1, Andreia Gorgeski1, Maria C M Alves2
1Instituto de Física-Laboratory on Electron Spectroscopy (LEe) - UFRGS Porto Alegre 91501-970 RS Brazil jonder@if.ufrgs.br.
Abstract:
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 Cu1- /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.
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