Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes

A comparative study of O2 reduction on well defined iron oxides Fe3O4 and γ-FeOOH is presented. The Fe(III)/Fe(II) surface stoichiometry strongly depends on potential and determines the electronic conductivity and electron transfer rate to soluble redox species. A common feature of O2 reduction on b...

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Autores principales:	Vago, Ernesto Rómulo, Calvo, Ernesto Julio
Publicado:	1994
Materias:	electrocatalysis iron oxide oxygen peroxide Catalysis Composition Electric conductivity Electrochemistry Electrodes Electrolytes Interfaces (materials) Iron oxides Oxygen Peroxides pH Structure (composition) Cyclic voltammetry Electrocatalysis Electronic conductivity Rotating disc electrodes Soluble redox species Surface stoichiometry X ray photoelectron spectroscopy Reduction
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v39_n11-12_p1655_Vago http://hdl.handle.net/20.500.12110/paper_00134686_v39_n11-12_p1655_Vago
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00134686_v39_n11-12_p1655_Vago
record_format	dspace
spelling	paper:paper_00134686_v39_n11-12_p1655_Vago2023-06-08T14:35:52Z Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes Vago, Ernesto Rómulo Calvo, Ernesto Julio electrocatalysis iron oxide oxygen peroxide Catalysis Composition Electric conductivity Electrochemistry Electrodes Electrolytes Interfaces (materials) Iron oxides Oxygen Peroxides pH Structure (composition) Cyclic voltammetry Electrocatalysis Electronic conductivity Rotating disc electrodes Soluble redox species Surface stoichiometry X ray photoelectron spectroscopy Reduction A comparative study of O2 reduction on well defined iron oxides Fe3O4 and γ-FeOOH is presented. The Fe(III)/Fe(II) surface stoichiometry strongly depends on potential and determines the electronic conductivity and electron transfer rate to soluble redox species. A common feature of O2 reduction on both oxides is the occurrence of Fe2+ surface sites simultaneous to O2 reduction, which is necessary for the specific interaction between Fe(II) and O2. The electrocatalytic differences for γ-FeOOH and Fe3O4 are related to differences in oxide structure and different structure of the oxide-electrolyte interface. © 1994. Fil:Vago, E.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Calvo, E.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1994 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v39_n11-12_p1655_Vago http://hdl.handle.net/20.500.12110/paper_00134686_v39_n11-12_p1655_Vago
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	electrocatalysis iron oxide oxygen peroxide Catalysis Composition Electric conductivity Electrochemistry Electrodes Electrolytes Interfaces (materials) Iron oxides Oxygen Peroxides pH Structure (composition) Cyclic voltammetry Electrocatalysis Electronic conductivity Rotating disc electrodes Soluble redox species Surface stoichiometry X ray photoelectron spectroscopy Reduction
spellingShingle	electrocatalysis iron oxide oxygen peroxide Catalysis Composition Electric conductivity Electrochemistry Electrodes Electrolytes Interfaces (materials) Iron oxides Oxygen Peroxides pH Structure (composition) Cyclic voltammetry Electrocatalysis Electronic conductivity Rotating disc electrodes Soluble redox species Surface stoichiometry X ray photoelectron spectroscopy Reduction Vago, Ernesto Rómulo Calvo, Ernesto Julio Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes
topic_facet	electrocatalysis iron oxide oxygen peroxide Catalysis Composition Electric conductivity Electrochemistry Electrodes Electrolytes Interfaces (materials) Iron oxides Oxygen Peroxides pH Structure (composition) Cyclic voltammetry Electrocatalysis Electronic conductivity Rotating disc electrodes Soluble redox species Surface stoichiometry X ray photoelectron spectroscopy Reduction
description	A comparative study of O2 reduction on well defined iron oxides Fe3O4 and γ-FeOOH is presented. The Fe(III)/Fe(II) surface stoichiometry strongly depends on potential and determines the electronic conductivity and electron transfer rate to soluble redox species. A common feature of O2 reduction on both oxides is the occurrence of Fe2+ surface sites simultaneous to O2 reduction, which is necessary for the specific interaction between Fe(II) and O2. The electrocatalytic differences for γ-FeOOH and Fe3O4 are related to differences in oxide structure and different structure of the oxide-electrolyte interface. © 1994.
author	Vago, Ernesto Rómulo Calvo, Ernesto Julio
author_facet	Vago, Ernesto Rómulo Calvo, Ernesto Julio
author_sort	Vago, Ernesto Rómulo
title	Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes
title_short	Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes
title_full	Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes
title_fullStr	Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes
title_full_unstemmed	Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes
title_sort	electrocatalysis of oxygen reduction at well-defined iron oxide electrodes
publishDate	1994
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00134686_v39_n11-12_p1655_Vago http://hdl.handle.net/20.500.12110/paper_00134686_v39_n11-12_p1655_Vago
work_keys_str_mv	AT vagoernestoromulo electrocatalysisofoxygenreductionatwelldefinedironoxideelectrodes AT calvoernestojulio electrocatalysisofoxygenreductionatwelldefinedironoxideelectrodes
_version_	1768542720686555136

Electrocatalysis of oxygen reduction at well-defined iron oxide electrodes

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