Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film

Bibliographic Details
Main Author: Guaus,E.
Publication Date: 2007
Other Authors: Torrent-Burgués,J.
Format: Article
Language: eng
Source: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Download full: http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000100012
Summary: A Langmuir-Schaefer (LS) film of a thiomacrocyclic (ThM) compound was deposited on the surface of a glassy carbon electrode (GCE) rod, from a subphase containing Cu(II) ions. The voltammetric response of this modified GCE when the ThM was bonded to Cu2+, showed that the LS film moved the oxidation peaks of copper to more positive values. On the other hand, a LS film of the ThM compound was deposited on the surface of a GCE rod from a subphase of pure water. When the voltammetric response of the GCE-ThM electrode was studied in a Cu2+-SO4(2-) solution, it was found that the modified electrode increases its sensitivity respect to Cu2+ at low bulk Cu2+ concentrations in solution, and a surface-complexation reaction is proposed to explain the effect of the LS film on the GCE surface.
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spelling Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Filmmodified electrodesLangmuir-Schaefer filmscyclic voltammetrysurface-complexation reactionA Langmuir-Schaefer (LS) film of a thiomacrocyclic (ThM) compound was deposited on the surface of a glassy carbon electrode (GCE) rod, from a subphase containing Cu(II) ions. The voltammetric response of this modified GCE when the ThM was bonded to Cu2+, showed that the LS film moved the oxidation peaks of copper to more positive values. On the other hand, a LS film of the ThM compound was deposited on the surface of a GCE rod from a subphase of pure water. When the voltammetric response of the GCE-ThM electrode was studied in a Cu2+-SO4(2-) solution, it was found that the modified electrode increases its sensitivity respect to Cu2+ at low bulk Cu2+ concentrations in solution, and a surface-complexation reaction is proposed to explain the effect of the LS film on the GCE surface.Sociedade Portuguesa de Electroquímica2007-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000100012Portugaliae Electrochimica Acta v.25 n.1 2007reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000100012Guaus,E.Torrent-Burgués,J.info:eu-repo/semantics/openAccess2024-02-06T17:06:51Zoai:scielo:S0872-19042007000100012Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:02.116917Repositório 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 Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film
title Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film
spellingShingle Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film
Guaus,E.
modified electrodes
Langmuir-Schaefer films
cyclic voltammetry
surface-complexation reaction
title_short Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film
title_full Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film
title_fullStr Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film
title_full_unstemmed Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film
title_sort Electrochemical Response of a Vitreous Carbon Electrode Modified by a Thiomacrocyclic Compound Film
author Guaus,E.
author_facet Guaus,E.
Torrent-Burgués,J.
author_role author
author2 Torrent-Burgués,J.
author2_role author
dc.contributor.author.fl_str_mv Guaus,E.
Torrent-Burgués,J.
dc.subject.por.fl_str_mv modified electrodes
Langmuir-Schaefer films
cyclic voltammetry
surface-complexation reaction
topic modified electrodes
Langmuir-Schaefer films
cyclic voltammetry
surface-complexation reaction
description A Langmuir-Schaefer (LS) film of a thiomacrocyclic (ThM) compound was deposited on the surface of a glassy carbon electrode (GCE) rod, from a subphase containing Cu(II) ions. The voltammetric response of this modified GCE when the ThM was bonded to Cu2+, showed that the LS film moved the oxidation peaks of copper to more positive values. On the other hand, a LS film of the ThM compound was deposited on the surface of a GCE rod from a subphase of pure water. When the voltammetric response of the GCE-ThM electrode was studied in a Cu2+-SO4(2-) solution, it was found that the modified electrode increases its sensitivity respect to Cu2+ at low bulk Cu2+ concentrations in solution, and a surface-complexation reaction is proposed to explain the effect of the LS film on the GCE surface.
publishDate 2007
dc.date.none.fl_str_mv 2007-01-01
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://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000100012
url http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000100012
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042007000100012
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
publisher.none.fl_str_mv Sociedade Portuguesa de Electroquímica
dc.source.none.fl_str_mv Portugaliae Electrochimica Acta v.25 n.1 2007
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
_version_ 1799137289466544128

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