Unravelling the dependence of hydrogen oxidation kinetics on the size of Pt nanoparticles by in operando nanoplasmonic temperature sensing

Kristina Wettergren; Anders Hellman; Filippo Carlo Cavalca; Vladimir P. Zhdanov; Christoph Langhammer

doi:10.1021/nl504042u

Unravelling the dependence of hydrogen oxidation kinetics on the size of Pt nanoparticles by in operando nanoplasmonic temperature sensing

Kristina Wettergren, Anders Hellman, Filippo Carlo Cavalca, Vladimir P. Zhdanov, Christoph Langhammer

Research output: Contribution to journal › Journal article › Research › peer-review

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.

Original language	English
Journal	Nano Letters
Volume	15
Issue number	1
Pages (from-to)	574-580
ISSN	1530-6984
DOIs	https://doi.org/10.1021/nl504042u
Publication status	Published - 2015

Keywords

hydrogen oxidation
Indirect nanoplasmonic sensing
kinetics
particle size dependence
platinum
Activation energy
Atmospheric pressure
Enzyme kinetics
Hydrogen
Kinetics
Nanoparticles
Oxidation
Particle size
Platinum
Surface plasmon resonance
Temperature measurement
Hydrogen oxidation
Hydrogen oxidation reaction
Localized surface plasmon resonance
Nanoparticle sizes
Particle size dependence
Temperature measurement methods
Temperature sensing
Reaction kinetics

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10.1021/nl504042u

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title = "Unravelling the dependence of hydrogen oxidation kinetics on the size of Pt nanoparticles by in operando nanoplasmonic temperature sensing",

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.",

keywords = "hydrogen oxidation, Indirect nanoplasmonic sensing, kinetics, particle size dependence, platinum, Activation energy, Atmospheric pressure, Enzyme kinetics, Hydrogen, Kinetics, Nanoparticles, Oxidation, Particle size, Platinum, Surface plasmon resonance, Temperature measurement, Hydrogen oxidation, Hydrogen oxidation reaction, Localized surface plasmon resonance, Nanoparticle sizes, Particle size dependence, Temperature measurement methods, Temperature sensing, Reaction kinetics",

author = "Kristina Wettergren and Anders Hellman and Cavalca, {Filippo Carlo} and Zhdanov, {Vladimir P.} and Christoph Langhammer",

year = "2015",

doi = "10.1021/nl504042u",

language = "English",

volume = "15",

pages = "574--580",

journal = "Nano Letters",

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T1 - Unravelling the dependence of hydrogen oxidation kinetics on the size of Pt nanoparticles by in operando nanoplasmonic temperature sensing

AU - Wettergren, Kristina

AU - Hellman, Anders

AU - Cavalca, Filippo Carlo

AU - Zhdanov, Vladimir P.

AU - Langhammer, Christoph

PY - 2015

Y1 - 2015

N2 - 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.

AB - 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.

KW - hydrogen oxidation

KW - Indirect nanoplasmonic sensing

KW - kinetics

KW - particle size dependence

KW - platinum

KW - Activation energy

KW - Atmospheric pressure

KW - Enzyme kinetics

KW - Hydrogen

KW - Kinetics

KW - Nanoparticles

KW - Oxidation

KW - Particle size

KW - Platinum

KW - Surface plasmon resonance

KW - Temperature measurement

KW - Hydrogen oxidation

KW - Hydrogen oxidation reaction

KW - Localized surface plasmon resonance

KW - Nanoparticle sizes

KW - Particle size dependence

KW - Temperature measurement methods

KW - Temperature sensing

KW - Reaction kinetics

U2 - 10.1021/nl504042u

DO - 10.1021/nl504042u

M3 - Journal article

C2 - 25479190

SN - 1530-6984

VL - 15

SP - 574

EP - 580

JO - Nano Letters

JF - Nano Letters

IS - 1

ER -

Unravelling the dependence of hydrogen oxidation kinetics on the size of Pt nanoparticles by in operando nanoplasmonic temperature sensing

Abstract

Keywords

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