Oxygen electro-reduction on iron oxide electrodes: III. Heterogeneous catalytic H2O2 decomposition

Oxygen reduction on two well-defined iron oxide electrodes (γ-FeOOH and Fe3O4) shows deviations from linear Koutecky-Levich plots. These results can be explained by two limiting cases of the heterogeneous catalytic peroxide decomposition mechanism proposed by McIntyre (J. Phys. Chem., 71 (1967) 1196...

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Autores principales: Vago, E.R., Calvo, E.J.
Formato: JOUR
Materias:
Electro-reduction
Electrocatalysis
HCER
Oxygen
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00220728_v388_n1-2_p161_Vago
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00220728_v388_n1-2_p161_Vago
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spelling todo:paper_00220728_v388_n1-2_p161_Vago2023-10-03T14:25:47Z Oxygen electro-reduction on iron oxide electrodes: III. Heterogeneous catalytic H2O2 decomposition Vago, E.R. Calvo, E.J. Electro-reduction Electrocatalysis HCER Oxygen Oxygen reduction on two well-defined iron oxide electrodes (γ-FeOOH and Fe3O4) shows deviations from linear Koutecky-Levich plots. These results can be explained by two limiting cases of the heterogeneous catalytic peroxide decomposition mechanism proposed by McIntyre (J. Phys. Chem., 71 (1967) 1196; J. Phys. Chem., 73 (1969) 4102). Recycling of oxygen by peroxide decomposition at the oxide surfaces depends on the relative magnitude of the peroxide decomposition rate (k4), the convective-diffusion flux (ZpW1 2) and the oxygen adsorption kinetics ( k2 k-2). © 1995. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00220728_v388_n1-2_p161_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 Electro-reduction
Electrocatalysis
HCER
Oxygen
spellingShingle Electro-reduction
Electrocatalysis
HCER
Oxygen
Vago, E.R.
Calvo, E.J.
Oxygen electro-reduction on iron oxide electrodes: III. Heterogeneous catalytic H2O2 decomposition
topic_facet Electro-reduction
Electrocatalysis
HCER
Oxygen
description Oxygen reduction on two well-defined iron oxide electrodes (γ-FeOOH and Fe3O4) shows deviations from linear Koutecky-Levich plots. These results can be explained by two limiting cases of the heterogeneous catalytic peroxide decomposition mechanism proposed by McIntyre (J. Phys. Chem., 71 (1967) 1196; J. Phys. Chem., 73 (1969) 4102). Recycling of oxygen by peroxide decomposition at the oxide surfaces depends on the relative magnitude of the peroxide decomposition rate (k4), the convective-diffusion flux (ZpW1 2) and the oxygen adsorption kinetics ( k2 k-2). © 1995.
format JOUR
author Vago, E.R.
Calvo, E.J.
author_facet Vago, E.R.
Calvo, E.J.
author_sort Vago, E.R.
title Oxygen electro-reduction on iron oxide electrodes: III. Heterogeneous catalytic H2O2 decomposition
title_short Oxygen electro-reduction on iron oxide electrodes: III. Heterogeneous catalytic H2O2 decomposition
title_full Oxygen electro-reduction on iron oxide electrodes: III. Heterogeneous catalytic H2O2 decomposition
title_fullStr Oxygen electro-reduction on iron oxide electrodes: III. Heterogeneous catalytic H2O2 decomposition
title_full_unstemmed Oxygen electro-reduction on iron oxide electrodes: III. Heterogeneous catalytic H2O2 decomposition
title_sort oxygen electro-reduction on iron oxide electrodes: iii. heterogeneous catalytic h2o2 decomposition
url http://hdl.handle.net/20.500.12110/paper_00220728_v388_n1-2_p161_Vago
work_keys_str_mv AT vagoer oxygenelectroreductiononironoxideelectrodesiiiheterogeneouscatalytich2o2decomposition
AT calvoej oxygenelectroreductiononironoxideelectrodesiiiheterogeneouscatalytich2o2decomposition
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