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Hydrogen oxidation reaction on platinum nanoparticles: understanding the kinetics of electrocatalytic reactions via “nano-impacts”

Abstract:

The kinetics of the hydrogen oxidation reaction (HOR) on platinum nanoparticles (PtNPs) is explored. The steady-state current for HOR on individual PtNPs is measured via the nanoimpact approach. Adopting the Tafel-Volmer mechanism, the adsorption rate constant for HOR on PtNPs is calculated as 0.020 ± 0.008 m s–1. The HOR is also studied on electrodes where PtNPs are immobilized via drop-casting on the supporting substrate prior to experimentation and the kinetic parameters contrasted with...

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Publication status:
Published
Peer review status:
Peer reviewed
Version:
Accepted Manuscript

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Publisher copy:
10.1021/acs.jpcc.6b04281

Authors


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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
Role:
Author
Publisher:
American Chemical Society Publisher's website
Journal:
Journal of Physical Chemistry C Journal website
Volume:
120
Issue:
24
Pages:
13148–13158
Publication date:
2016-06-02
DOI:
EISSN:
1932-7455
ISSN:
1932-7447
URN:
uuid:7fa53ec9-c8c4-431a-ab28-79b2ba2b36d6
Source identifiers:
630572
Local pid:
pubs:630572
Paper number:
24

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