Unravelling the Dependence of Hydrogen Oxidation Kinetics on the Size of Pt Nanoparticles by in Operando Nanoplasmonic Temperature Sensing Full article
Journal |
Nano Letters
ISSN: 1530-6984 , E-ISSN: 1530-6992 |
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Output data | Year: 2015, Volume: 15, Number: 1, Pages: 574-580 Pages count : 7 DOI: 10.1021/nl504042u | ||||||||
Tags | hydrogen oxidation, Indirect nanoplasmonic sensing, kinetics, particle size dependence, platinum | ||||||||
Authors |
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Affiliations |
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Funding (4)
1 | Stiftelsen för strategisk forskning | RMA11-0037 |
2 | Swedish Research Council | 2010-4041 |
3 | Chalmers University of Technology | |
4 | Knut and Alice Wallenberg Foundation |
Abstract:
We use a noninvasive nanoscale optical-temperature measurement method based on localized surface plasmon resonance to investigate the particle size-dependence of the hydrogen oxidation reaction kinetics on model supported Pt nanocatalysts at atmospheric pressure in operando. With decreasing average nanoparticle size from 11 down to 3 nm, the apparent reaction activation energy is found to increase from 0.5 up to 0.8 eV. This effect is attributed to an increase of the fraction of (100)-facet and edge and corner sites and their increasingly important role in the reaction with decreasing particle size.
Cite:
Wettergren K.
, Hellman A.
, Cavalca F.
, Zhdanov V.P.
, Langhammer C.
Unravelling the Dependence of Hydrogen Oxidation Kinetics on the Size of Pt Nanoparticles by in Operando Nanoplasmonic Temperature Sensing
Nano Letters. 2015. V.15. N1. P.574-580. DOI: 10.1021/nl504042u WOS Scopus РИНЦ
Unravelling the Dependence of Hydrogen Oxidation Kinetics on the Size of Pt Nanoparticles by in Operando Nanoplasmonic Temperature Sensing
Nano Letters. 2015. V.15. N1. P.574-580. DOI: 10.1021/nl504042u WOS Scopus РИНЦ
Dates:
Submitted: | Oct 21, 2014 |
Accepted: | Nov 23, 2014 |
Published online: | Dec 11, 2014 |
Published print: | Jan 14, 2015 |
Identifiers:
Web of science | WOS:000348086100090 |
Scopus | 2-s2.0-84920964661 |
Elibrary | 23964500 |
Chemical Abstracts | 2014:2046182 |
Chemical Abstracts (print) | 162:114492 |
OpenAlex | W1966535207 |