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Theory meets experiment: Electrocatalysis of hydrogen oxidation/evolution at Pd–Au nanostructures

Paper ID Volume ID Publish Year Pages File Format Full-Text
55670 47061 2011 9 PDF Available
Title
Theory meets experiment: Electrocatalysis of hydrogen oxidation/evolution at Pd–Au nanostructures
Abstract

The oxidation and evolution reactions of hydrogen are investigated at nanostructures of palladium–gold combining experimental and theoretical approaches. The extraordinary reactivity of submonolayers of Pd on Au(1 1 1) has been explained by a direct correlation with the changes in the electronic properties and geometrical arrangements. The application of the electrocatalysis theory, which goes beyond the qualitative approach of the d band centers, allows explaining quantitatively the experimental finding.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (182 K)Download as PowerPoint slideHighlights► Submonolayers of Pd on Au(1 1 1) have extraordinary reactivity for H2 reactions. ► The reactivity also depends on the atomic arrangements and the amount of Pd. ► The electrocatalysis is explained by direct correlations with the electronic states. ► Our quantitative theory goes beyond the qualitative approach of the d band centers.

Keywords
Electrocatalysis; Nanostructures; Electron transfer reactions; d-bands; Hydrogen oxidation/evolution; Pd; Au(1 1 1)
First Page Preview
Theory meets experiment: Electrocatalysis of hydrogen oxidation/evolution at Pd–Au nanostructures
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 177, Issue 1, 22 November 2011, Pages 55–63
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis