Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes

Detalhes bibliográficos
Autor(a) principal: Ferreira, Manuel Eduardo C.
Data de Publicação: 2012
Outros Autores: Pinto, Mara F., Soares, O. S. G. P., Pereira, M. F. R., Orfão, J. J. M., Figueiredo, J. l., Neves, Isabel C., Fonseca, A. Maurício C., Parpot, Pier
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/22067
Resumo: The electrochemical oxidation of oxalic and oxamic acids on multiwalled carbon nanotubes (CNT) and on monometallic (Pd and Pt) and bimetallic (Pd-Cu, Pt-Cu) catalysts supported on multiwalled carbon nanotubes was investigated using cyclic voltammetry. The electrodes were prepared by dispersion of the catalytic material on Toray carbon (CT) using a Nafion/water solution. The kinetic parameters of the reactions were determined using cyclic voltammetry. Modification of Toray carbon electrode with carbon nanotubes enables the oxidation of oxalic and oxamic acids in the solvent stability region. The highest oxidation current densities were observed for the Pt-Cu/CNT/CT electrode in 0.1 M NaCl. The oxidation potentials for both oxalic and oxamic acids in this case were lower than those observed with the CNT/CT electrode. The prepared electrocatalysts show good mechanical and chemical stability.
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spelling Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodesMultiwalled carbon nanotubesOxidationOxalic and oxamic acidsElectrocatalysissurface modificationScience & TechnologyThe electrochemical oxidation of oxalic and oxamic acids on multiwalled carbon nanotubes (CNT) and on monometallic (Pd and Pt) and bimetallic (Pd-Cu, Pt-Cu) catalysts supported on multiwalled carbon nanotubes was investigated using cyclic voltammetry. The electrodes were prepared by dispersion of the catalytic material on Toray carbon (CT) using a Nafion/water solution. The kinetic parameters of the reactions were determined using cyclic voltammetry. Modification of Toray carbon electrode with carbon nanotubes enables the oxidation of oxalic and oxamic acids in the solvent stability region. The highest oxidation current densities were observed for the Pt-Cu/CNT/CT electrode in 0.1 M NaCl. The oxidation potentials for both oxalic and oxamic acids in this case were lower than those observed with the CNT/CT electrode. The prepared electrocatalysts show good mechanical and chemical stability.Support for this work was provided by the project NANO/NTec-CA/0122/2007 financed by Fundacao para a Ciencia e a Tecnologia (FCT), Portugal and FEDER, in the context of Programme COMPETE.ElsevierUniversidade do MinhoFerreira, Manuel Eduardo C.Pinto, Mara F.Soares, O. S. G. P.Pereira, M. F. R.Orfão, J. J. M.Figueiredo, J. l.Neves, Isabel C.Fonseca, A. Maurício C.Parpot, Pier2012-012012-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/22067eng0013-468610.1016/j.electacta.2011.11.046info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:03:43Zoai:repositorium.sdum.uminho.pt:1822/22067Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:53:54.062510Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes
title Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes
spellingShingle Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes
Ferreira, Manuel Eduardo C.
Multiwalled carbon nanotubes
Oxidation
Oxalic and oxamic acids
Electrocatalysis
surface modification
Science & Technology
title_short Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes
title_full Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes
title_fullStr Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes
title_full_unstemmed Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes
title_sort Electrocatalytic oxidation of oxalic and oxamic acids in aqueous media at carbon nanotube modified electrodes
author Ferreira, Manuel Eduardo C.
author_facet Ferreira, Manuel Eduardo C.
Pinto, Mara F.
Soares, O. S. G. P.
Pereira, M. F. R.
Orfão, J. J. M.
Figueiredo, J. l.
Neves, Isabel C.
Fonseca, A. Maurício C.
Parpot, Pier
author_role author
author2 Pinto, Mara F.
Soares, O. S. G. P.
Pereira, M. F. R.
Orfão, J. J. M.
Figueiredo, J. l.
Neves, Isabel C.
Fonseca, A. Maurício C.
Parpot, Pier
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Ferreira, Manuel Eduardo C.
Pinto, Mara F.
Soares, O. S. G. P.
Pereira, M. F. R.
Orfão, J. J. M.
Figueiredo, J. l.
Neves, Isabel C.
Fonseca, A. Maurício C.
Parpot, Pier
dc.subject.por.fl_str_mv Multiwalled carbon nanotubes
Oxidation
Oxalic and oxamic acids
Electrocatalysis
surface modification
Science & Technology
topic Multiwalled carbon nanotubes
Oxidation
Oxalic and oxamic acids
Electrocatalysis
surface modification
Science & Technology
description The electrochemical oxidation of oxalic and oxamic acids on multiwalled carbon nanotubes (CNT) and on monometallic (Pd and Pt) and bimetallic (Pd-Cu, Pt-Cu) catalysts supported on multiwalled carbon nanotubes was investigated using cyclic voltammetry. The electrodes were prepared by dispersion of the catalytic material on Toray carbon (CT) using a Nafion/water solution. The kinetic parameters of the reactions were determined using cyclic voltammetry. Modification of Toray carbon electrode with carbon nanotubes enables the oxidation of oxalic and oxamic acids in the solvent stability region. The highest oxidation current densities were observed for the Pt-Cu/CNT/CT electrode in 0.1 M NaCl. The oxidation potentials for both oxalic and oxamic acids in this case were lower than those observed with the CNT/CT electrode. The prepared electrocatalysts show good mechanical and chemical stability.
publishDate 2012
dc.date.none.fl_str_mv 2012-01
2012-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/1822/22067
url http://hdl.handle.net/1822/22067
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0013-4686
10.1016/j.electacta.2011.11.046
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
institution RCAAP
reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
repository.mail.fl_str_mv
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