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Altered Electrochemistry at Graphene- or Alumina-Modified Electrodes: Catalysis vs Electrocatalysis in Multistep Electrode Processes

Abstract:
The voltammetric behavior of glassy carbon electrodes modified with either submonolayer quantities of alumina or graphene is examined with respect to the two-electron, two-proton reaction of catechol (1,2-dihydroxybenzene) in aqueous solution. While the voltammetric behavior superficially hints at a change of electron transfer rate, an alternative explanation in terms of the changed thermodynamics of the intermediate species is advanced and rationalized.
Publication status:
Published
Peer review status:
Peer Reviewed

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Publisher copy:
10.1021/acs.jpcc.5b04335

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Institution:
University of Oxford
Department:
Oxford, MPLS, Chemistry, Physical and Theoretical Chem
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Author
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Institution:
University of Oxford
Department:
Oxford, MPLS, Materials
Role:
Author
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Grant:
European Union’s Seventh Framework Programme (FP/2007-2013)/ERC Grant Agreement no. 320403
Journal:
The journal of Physical Chemistry C
Volume:
119
Issue:
24
Pages:
13777-13784
Publication date:
2015-06-18
DOI:
EISSN:
1932-7455
ISSN:
1932-7447
URN:
uuid:77a35296-1385-4a9a-a8e3-3336656bccb8
Source identifiers:
532115
Local pid:
pubs:532115

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