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Single entity electrocatalysis: oxygen reduction mediated via methyl viologen doped Nafion nanoparticles

Abstract:
Nafion particles doped with methyl viologen are shown to be electrocatalytic towards oxygen reduction in aqueous solution when immobilised on a carbon electrode surface, with the formation of hydrogen peroxide. In this way an efficient homogeneous electron transfer mediator, methyl viologen, can be confined to act heterogeneously with the benefits of that type of process without losing effectiveness. Kinetic and mechanistic parameters are deduced from cyclic voltammetry and from single entity nano-impact experiments, and the process is shown to occur via electron transfer to dioxygen at the Nafion particle–solution interface with the initial formation of superoxide.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1039/C8CP02311E

Authors

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Institution:
University of Oxford
Division:
MPLS
Department:
Chemistry
Sub department:
Physical & Theoretical Chem
Oxford college:
St Cross College
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Chemistry; Physical & Theoretical Chem
Role:
Author
More by this author
Institution:
University of Oxford
Division:
MPLS Division
Department:
Chemistry; Physical & Theoretical Chem
Role:
Author


Publisher:
Royal Society of Chemistry
Journal:
Physical Chemistry Chemical Physics More from this journal
Volume:
20
Issue:
23
Pages:
15795-15806
Publication date:
2018-05-23
Acceptance date:
2018-05-23
DOI:
ISSN:
1463-9076


Pubs id:
pubs:853612
UUID:
uuid:e92b33cb-5e6b-4b52-8894-4e8929afed2a
Local pid:
pubs:853612
Source identifiers:
853612
Deposit date:
2018-05-23
ARK identifier:

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