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Hydride formation t...
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Syrenova, Svetlana,1987Chalmers tekniska högskola,Chalmers University of Technology
(author)
Hydride formation thermodynamics and hysteresis in individual Pd nanocrystals with different size and shape
- Article/chapterEnglish2015
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Numbers
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LIBRIS-ID:oai:research.chalmers.se:0685ad4a-a62b-41f6-8a48-29ef5ea2c610
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https://research.chalmers.se/publication/222889URI
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https://doi.org/10.1038/NMAT4409DOI
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Language:English
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Summary in:English
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Physicochemical properties of nanoparticles may depend on their size and shape and are traditionally assessed in ensemble-level experiments, which accordingly may be plagued by averaging effects. These effects can be eliminated in single-nanoparticle experiments. Using plasmonic nanospectroscopy, we present a comprehensive study of hydride formation thermodynamics in individual Pd nanocrystals of different size and shape, and find corresponding enthalpies and entropies to be nearly size- and shape-independent. The hysteresis observed is significantly wider than in bulk, with details depending on the specifics of individual nanoparticles. Generally, the absorption branch of the hysteresis loop is size-dependent in the sub-30 nm regime, whereas desorption is size- and shape-independent. The former is consistent with a coherent phase transition during hydride formation, influenced kinetically by the specifics of nucleation, whereas the latter implies that hydride decomposition either occurs incoherently or via different kinetic pathways.
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Added entries (persons, corporate bodies, meetings, titles ...)
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Wadell, Carl,1985Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)caraxe
(author)
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Nugroho, Ferry,1986Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)ferryn
(author)
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Gschneidtner, Tina,1985Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)tinag
(author)
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Fernandez, Yuri A. Diaz,1978Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)yuria
(author)
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Nalin, Giammarco,1988Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)gnalin
(author)
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Świtlik, DominikaUniwersytet Warszawski,University of Warsaw
(author)
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Westerlund, Fredrik,1978Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)fredrikw
(author)
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Antosiewicz, Tomasz,1981Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)tomasza
(author)
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Zhdanov, Vladimir,1952Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)zhdanov
(author)
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Moth-Poulsen, Kasper,1978Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)mkasper
(author)
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Langhammer, Christoph,1978Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)clangham
(author)
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Chalmers tekniska högskolaUniwersytet Warszawski
(creator_code:org_t)
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In:Nature Materials14:12, s. 1236-12441476-46601476-1122
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