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Journal article

Determination of Core-Shell Structures in Pd-Hg Nanoparticles by STEM-EDX

In Chemcatchem — 2015, Volume 7, Issue 22, pp. 3748-3752

By Deiana, Davide1; Verdaguer Casadevall, Arnau2,3; Malacrida, Paolo2,3; Stephens, Ifan2,3; Chorkendorff, Ib2,3; Wagner, Jakob Birkedal1; Hansen, Thomas Willum1

From

Center for Electron Nanoscopy, Technical University of Denmark1

Department of Physics, Technical University of Denmark2

Surface Physics and Catalysis, Department of Physics, Technical University of Denmark3

The structural and elemental configuration of a high-performing Pd-Hg electrocatalyst for oxygen reduction to hydrogen peroxide has been studied by means of high-resolution scanning transmission electron microscopy. Pd-Hg nanoparticles are shown to have a crystalline core-shell structure, with a Pd core and a Pd-Hg ordered alloy shell.

The ordered shell is responsible for the high oxygen reduction selectivity to H2O2.

Language: English
Year: 2015
Pages: 3748-3752
ISSN: 18673880 and 18673899
Types: Journal article
DOI: 10.1002/cctc.201500791
ORCIDs: Stephens, Ifan , Chorkendorff, Ib , Wagner, Jakob Birkedal and Hansen, Thomas Willum

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