Title: Hydrogen-induced ostwald ripening at room temperature in a Pd nanocluster film
Authors: Di Vece, Marcel ×
Grandjean, Didier
Van Bael, Margriet
Romero, CP
Wang, X
Decoster, Stefan
Vantomme, André
Lievens, Peter #
Issue Date: Jun-2008
Publisher: American Physical Society
Series Title: Physical Review Letters vol:100 issue:23
Article number: 236105
Abstract: The structural and morphological changes occurring in an ensemble of vapor deposited palladium nanoclusters have been studied after several hydrogenation cycles with x-ray diffraction, extended x-ray-absorption fine structure spectroscopy, Rutherford backscattering spectrometry, and STM. Initial hydrogenation increased the cluster size, a result that is attributed to hydrogen-induced Ostwald ripening. This phenomenon originates from the higher mobility of palladium atoms resulting from the low sublimation energy of the palladium hydride as compared to that of the palladium metal. The universality of this phenomenon makes it important for the application of future nanostructured hydrogen storage materials.
ISSN: 0031-9007
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Nuclear and Radiation Physics Section
Solid State Physics and Magnetism Section
× corresponding author
# (joint) last author

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