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Mesoporous palladium—the surface electrochemistry of palladium in aqueous sodium hydroxide and the cathodic reduction of nitrite

Mesoporous palladium—the surface electrochemistry of palladium in aqueous sodium hydroxide and the cathodic reduction of nitrite
Mesoporous palladium—the surface electrochemistry of palladium in aqueous sodium hydroxide and the cathodic reduction of nitrite
The voltammetry of nanostructured palladium layers electrodeposited from a hexagonal liquid crystal phase onto platinum microdiscs show well defined peaks for the adsorption/desorption of hydrogen and surface oxidation/reduction in 2 M NaOH. These peaks are more clearly resolved than at smooth palladium and reveal the complications associated with hydrogen adsorption/desorption on palladium in aqueous alkaline solutions. The reduction of nitrite at the nanostructured palladium is also reported and it is shown that it occurs via a mechanism involving a chemical reaction between adsorbed hydrogen and adsorbed nitrite ion.
1463-9076
3545-3551
Denuault, Guy
5c76e69f-e04e-4be5-83c5-e729887ffd4e
Milhano, Clélia
961f613e-0bc3-4895-918e-6bb2e4e27f7a
Pletcher, Derek
f22ebe69-b859-4a89-80b0-9e190e6f8f30
Denuault, Guy
5c76e69f-e04e-4be5-83c5-e729887ffd4e
Milhano, Clélia
961f613e-0bc3-4895-918e-6bb2e4e27f7a
Pletcher, Derek
f22ebe69-b859-4a89-80b0-9e190e6f8f30

Denuault, Guy, Milhano, Clélia and Pletcher, Derek (2005) Mesoporous palladium—the surface electrochemistry of palladium in aqueous sodium hydroxide and the cathodic reduction of nitrite. Physical Chemistry Chemical Physics, 7 (20), 3545-3551. (doi:10.1039/b508835f).

Record type: Article

Abstract

The voltammetry of nanostructured palladium layers electrodeposited from a hexagonal liquid crystal phase onto platinum microdiscs show well defined peaks for the adsorption/desorption of hydrogen and surface oxidation/reduction in 2 M NaOH. These peaks are more clearly resolved than at smooth palladium and reveal the complications associated with hydrogen adsorption/desorption on palladium in aqueous alkaline solutions. The reduction of nitrite at the nanostructured palladium is also reported and it is shown that it occurs via a mechanism involving a chemical reaction between adsorbed hydrogen and adsorbed nitrite ion.

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Published date: 2 September 2005
Organisations: Electrochemistry & Surface Science Group

Identifiers

Local EPrints ID: 344850
URI: http://eprints.soton.ac.uk/id/eprint/344850
ISSN: 1463-9076
PURE UUID: 766e4c34-bba7-411a-94e5-bf6841b30abf
ORCID for Guy Denuault: ORCID iD orcid.org/0000-0002-8630-9492

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Date deposited: 30 Jan 2013 11:41
Last modified: 29 Aug 2019 00:53

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Contributors

Author: Guy Denuault ORCID iD
Author: Clélia Milhano
Author: Derek Pletcher

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