Hydride Formation Thermodynamics and Hysteresis in Individual Pd Nanocrystals with Different Size and Shape Full article
Journal |
Nature Materials
ISSN: 1476-1122 , E-ISSN: 1476-4660 |
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Output data | Year: 2015, Number: 14, Pages: 1236-1244 Pages count : 9 DOI: 10.1038/nmat4409 | ||||||||||||
Tags | Hydrides; Hysteresis; Nanocrystals; Nanoparticles; Thermodynamics | ||||||||||||
Authors |
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Affiliations |
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Funding (5)
1 | Stiftelsen för strategisk forskning | RMA11-0037 |
2 | Chalmers University of Technology | |
3 | Swedish Research Council | |
4 | European Research Council | 337221 |
5 | National Science Center | 2012/07/D/ST3/02152 |
Abstract:
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.
Cite:
Syrenova S.
, Wadell C.
, Nugroho F.A.A.
, Gschneidtner T.A.
, Diaz Fernandez Y.A.
, Nalin G.
, Świtlik D.
, Westerlund F.
, Antosiewicz T.
, Zhdanov V.P.
, Moth-Poulsen K.
, Langhammer C.
Hydride Formation Thermodynamics and Hysteresis in Individual Pd Nanocrystals with Different Size and Shape
Nature Materials. 2015. N14. P.1236-1244. DOI: 10.1038/nmat4409 WOS Scopus РИНЦ
Hydride Formation Thermodynamics and Hysteresis in Individual Pd Nanocrystals with Different Size and Shape
Nature Materials. 2015. N14. P.1236-1244. DOI: 10.1038/nmat4409 WOS Scopus РИНЦ
Dates:
Submitted: | Dec 17, 2014 |
Accepted: | Jul 28, 2015 |
Published online: | Sep 7, 2015 |
Published print: | Dec 1, 2015 |
Identifiers:
Web of science | WOS:000365839000021 |
Scopus | 2-s2.0-84947868624 |
Elibrary | 24973691 |
Chemical Abstracts | 2015:1463212 |
Chemical Abstracts (print) | 163:657486 |
PMID | 26343912 |
OpenAlex | W2135845615 |