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TitleStructure of palladium nanoclusters for hydrogen gas sensors
Publication TypeJournal Article
Year of Publication2008
AuthorsStevens, K.J., Ingham B., Toney M.F., Brown S.A., and Lassesson A.
JournalCurrent Applied Physics
Pagination443 - 446
Date Published2008
ISSN15671739 (ISSN)
KeywordsChemical sensors, Fuel cells, Grazing incidence XRD, High resolution transmission electron microscopy, Hydrogen gas sensors, Nanoclusters, Palladanite structure, Palladium, Palladium nanoclusters, X ray diffraction
AbstractPalladium nanoclusters produced by inert gas aggregation/magnetron sputtering are used as building blocks for the construction of nano electronic devices with large surface to volume ratios that can be used as sensitive hydrogen gas sensors in fuel cells and in petrochemical plants. X-ray diffraction (XRD), extended X-ray absorption fine structure (EXAFS), and high resolution transmission electron microscopy (HRTEM) have been used to characterise the structure, lattice constant, particle diameter and oxide thickness of the palladium nanoclusters in order to understand the operation of these sensors. Grazing incidence XRD (GIXRD) of heat treated Pd clusters has shown that the palladanite structure forms at elevated temperatures. © 2007 Elsevier B.V. All rights reserved.

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