Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition

Autores
Vazquez, Cecilia Irene; Andrade, Gustavo F. S.; Temperini, Marcia L. A.; Lacconi, Gabriela Ines
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The adsorption of picolinic acid (PA) onto HOPG electrodes during silver electrodeposition at pH 3.0 was examined using conventional electrochemical techniques: cyclic voltammetry and impedance measurements (differential capacity-potential plots) and Surface-Enhanced Raman Spectroscopy (SERS), through a wide range of electrode potentials. The spectroelectrochemical results indicate that the electroactive species for silver electrodeposition are Ag+ ions and [Ag(Pic)] complexes, in spite of the predominant species in solution being the zwitterion (HPic). Adsorption of the anion (Pic-) occurs through a wide potential range where the electrode surface charge density is positive. However, HPic deprotonation, hydrogen formation and Pic- desorption, with the consequent decrease in SERS intensity, occur at the zero-charge potential (pzc) for HOPG.
Fil: Vazquez, Cecilia Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Andrade, Gustavo F. S.. Universidade Federal de Juiz de Fora; Brasil
Fil: Temperini, Marcia L. A.. Universidade de Sao Paulo; Brasil
Fil: Lacconi, Gabriela Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Materia
Adsorption
Picolinic Acid
Silver Electrodeposition
Surface-Enhanced Raman Spectroscopy
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/37574
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Spectroelectrochemical study of picolinic acid adsorption during silver electrodepositionVazquez, Cecilia IreneAndrade, Gustavo F. S.Temperini, Marcia L. A.Lacconi, Gabriela InesAdsorptionPicolinic AcidSilver ElectrodepositionSurface-Enhanced Raman Spectroscopyhttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The adsorption of picolinic acid (PA) onto HOPG electrodes during silver electrodeposition at pH 3.0 was examined using conventional electrochemical techniques: cyclic voltammetry and impedance measurements (differential capacity-potential plots) and Surface-Enhanced Raman Spectroscopy (SERS), through a wide range of electrode potentials. The spectroelectrochemical results indicate that the electroactive species for silver electrodeposition are Ag+ ions and [Ag(Pic)] complexes, in spite of the predominant species in solution being the zwitterion (HPic). Adsorption of the anion (Pic-) occurs through a wide potential range where the electrode surface charge density is positive. However, HPic deprotonation, hydrogen formation and Pic- desorption, with the consequent decrease in SERS intensity, occur at the zero-charge potential (pzc) for HOPG.Fil: Vazquez, Cecilia Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaFil: Andrade, Gustavo F. S.. Universidade Federal de Juiz de Fora; BrasilFil: Temperini, Marcia L. A.. Universidade de Sao Paulo; BrasilFil: Lacconi, Gabriela Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; ArgentinaPergamon-Elsevier Science Ltd2015-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37574Vazquez, Cecilia Irene; Andrade, Gustavo F. S.; Temperini, Marcia L. A.; Lacconi, Gabriela Ines; Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 156; 2-2015; 154-1620013-4686CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2015.01.034info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468615000547info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:06:58Zoai:ri.conicet.gov.ar:11336/37574instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:06:58.759CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition
title Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition
spellingShingle Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition
Vazquez, Cecilia Irene
Adsorption
Picolinic Acid
Silver Electrodeposition
Surface-Enhanced Raman Spectroscopy
title_short Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition
title_full Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition
title_fullStr Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition
title_full_unstemmed Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition
title_sort Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition
dc.creator.none.fl_str_mv Vazquez, Cecilia Irene
Andrade, Gustavo F. S.
Temperini, Marcia L. A.
Lacconi, Gabriela Ines
author Vazquez, Cecilia Irene
author_facet Vazquez, Cecilia Irene
Andrade, Gustavo F. S.
Temperini, Marcia L. A.
Lacconi, Gabriela Ines
author_role author
author2 Andrade, Gustavo F. S.
Temperini, Marcia L. A.
Lacconi, Gabriela Ines
author2_role author
author
author
dc.subject.none.fl_str_mv Adsorption
Picolinic Acid
Silver Electrodeposition
Surface-Enhanced Raman Spectroscopy
topic Adsorption
Picolinic Acid
Silver Electrodeposition
Surface-Enhanced Raman Spectroscopy
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The adsorption of picolinic acid (PA) onto HOPG electrodes during silver electrodeposition at pH 3.0 was examined using conventional electrochemical techniques: cyclic voltammetry and impedance measurements (differential capacity-potential plots) and Surface-Enhanced Raman Spectroscopy (SERS), through a wide range of electrode potentials. The spectroelectrochemical results indicate that the electroactive species for silver electrodeposition are Ag+ ions and [Ag(Pic)] complexes, in spite of the predominant species in solution being the zwitterion (HPic). Adsorption of the anion (Pic-) occurs through a wide potential range where the electrode surface charge density is positive. However, HPic deprotonation, hydrogen formation and Pic- desorption, with the consequent decrease in SERS intensity, occur at the zero-charge potential (pzc) for HOPG.
Fil: Vazquez, Cecilia Irene. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
Fil: Andrade, Gustavo F. S.. Universidade Federal de Juiz de Fora; Brasil
Fil: Temperini, Marcia L. A.. Universidade de Sao Paulo; Brasil
Fil: Lacconi, Gabriela Ines. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Investigaciones en Físico-química de Córdoba. Universidad Nacional de Córdoba. Facultad de Ciencias Químicas. Instituto de Investigaciones en Físico-química de Córdoba; Argentina
description The adsorption of picolinic acid (PA) onto HOPG electrodes during silver electrodeposition at pH 3.0 was examined using conventional electrochemical techniques: cyclic voltammetry and impedance measurements (differential capacity-potential plots) and Surface-Enhanced Raman Spectroscopy (SERS), through a wide range of electrode potentials. The spectroelectrochemical results indicate that the electroactive species for silver electrodeposition are Ag+ ions and [Ag(Pic)] complexes, in spite of the predominant species in solution being the zwitterion (HPic). Adsorption of the anion (Pic-) occurs through a wide potential range where the electrode surface charge density is positive. However, HPic deprotonation, hydrogen formation and Pic- desorption, with the consequent decrease in SERS intensity, occur at the zero-charge potential (pzc) for HOPG.
publishDate 2015
dc.date.none.fl_str_mv 2015-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/37574
Vazquez, Cecilia Irene; Andrade, Gustavo F. S.; Temperini, Marcia L. A.; Lacconi, Gabriela Ines; Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 156; 2-2015; 154-162
0013-4686
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37574
identifier_str_mv Vazquez, Cecilia Irene; Andrade, Gustavo F. S.; Temperini, Marcia L. A.; Lacconi, Gabriela Ines; Spectroelectrochemical study of picolinic acid adsorption during silver electrodeposition; Pergamon-Elsevier Science Ltd; Electrochimica Acta; 156; 2-2015; 154-162
0013-4686
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.electacta.2015.01.034
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0013468615000547
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
publisher.none.fl_str_mv Pergamon-Elsevier Science Ltd
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1842269984317767680
score 13.13397

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