Abstract
Pd-M (M = Cu and Ni) bimetallic catalysts (films and core-shell nanoparticles) were studied by examining the effect of electronic structural perturbation on the electrochemical activity of the Pd surface toward formic acid oxidation. X-ray photoelectron spectroscopy (XPS) and cyclic voltammetry (CV) are used to obtain the valence band spectra and d-band center shifts and electrochemical activities of the catalysts. XPS analysis indicates a charge transfer from Pd to the transition metals. This electronic perturbation results in an alteration of the interaction between the intermediate species and the Pd surface. As a result, an increase in current density and an improvement in stability of formic acid electrochemical oxidation are observed for the Pd-based bimetallic system compared to pure Pd.
Original language | English |
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Pages (from-to) | 1015-1022 |
Number of pages | 8 |
Journal | ECS Transactions |
Volume | 58 |
Issue number | 1 |
DOIs | |
State | Published - 2013 |