Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold

Autores
Lezna, Reynaldo Oscar; Tacconi, Norma R. de; Arvia, Alejandro Jorge
Año de publicación
1988
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The first stages of the electroadsorption of ethyl xanthate (EX) on polycrystalline gold have been studied by optical and electrochemical techniques covering the 5 × 10−6 to 1 × 10−3 M concentration range. According to ac voltammetry and electroreflectance measurements, the adsorption of EX begins at −1.4 V (vs. SCE), in the HER potential region, followed by a capacitative process at −1.0 V. Both stages can be ascribed to the formation of different bonds between the EX and the gold surface through the sulphur atoms of the molecule. The following electroadsorption stage at −0.7 V implies the formation of a surface compound leading subsequently to layer growth. Differential reflectivity was particularly useful in providing information'on this type of complex adsorption process without appreciable interference from charging currents or stray faradaic reactions.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
Materia
Ciencias Exactas
Química
Ethyl xanthate
Gold
Electroadsorption
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/122368
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/122368
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on goldLezna, Reynaldo OscarTacconi, Norma R. deArvia, Alejandro JorgeCiencias ExactasQuímicaEthyl xanthateGoldElectroadsorptionThe first stages of the electroadsorption of ethyl xanthate (EX) on polycrystalline gold have been studied by optical and electrochemical techniques covering the 5 × 10<sup>−6</sup> to 1 × 10<sup>−3</sup> M concentration range. According to ac voltammetry and electroreflectance measurements, the adsorption of EX begins at −1.4 V (vs. SCE), in the HER potential region, followed by a capacitative process at −1.0 V. Both stages can be ascribed to the formation of different bonds between the EX and the gold surface through the sulphur atoms of the molecule. The following electroadsorption stage at −0.7 V implies the formation of a surface compound leading subsequently to layer growth. Differential reflectivity was particularly useful in providing information'on this type of complex adsorption process without appreciable interference from charging currents or stray faradaic reactions.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1988-11-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf251-266http://sedici.unlp.edu.ar/handle/10915/122368enginfo:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/0022072888800184?via%3Dihubinfo:eu-repo/semantics/altIdentifier/issn/0022-0728info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(88)80018-4info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:29:08Zoai:sedici.unlp.edu.ar:10915/122368Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:29:09.158SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold
title Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold
spellingShingle Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold
Lezna, Reynaldo Oscar
Ciencias Exactas
Química
Ethyl xanthate
Gold
Electroadsorption
title_short Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold
title_full Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold
title_fullStr Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold
title_full_unstemmed Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold
title_sort Optical and electrochemical behaviour of the adsorption of potassium ethyl xanthate on gold
dc.creator.none.fl_str_mv Lezna, Reynaldo Oscar
Tacconi, Norma R. de
Arvia, Alejandro Jorge
author Lezna, Reynaldo Oscar
author_facet Lezna, Reynaldo Oscar
Tacconi, Norma R. de
Arvia, Alejandro Jorge
author_role author
author2 Tacconi, Norma R. de
Arvia, Alejandro Jorge
author2_role author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Ethyl xanthate
Gold
Electroadsorption
topic Ciencias Exactas
Química
Ethyl xanthate
Gold
Electroadsorption
dc.description.none.fl_txt_mv The first stages of the electroadsorption of ethyl xanthate (EX) on polycrystalline gold have been studied by optical and electrochemical techniques covering the 5 × 10<sup>−6</sup> to 1 × 10<sup>−3</sup> M concentration range. According to ac voltammetry and electroreflectance measurements, the adsorption of EX begins at −1.4 V (vs. SCE), in the HER potential region, followed by a capacitative process at −1.0 V. Both stages can be ascribed to the formation of different bonds between the EX and the gold surface through the sulphur atoms of the molecule. The following electroadsorption stage at −0.7 V implies the formation of a surface compound leading subsequently to layer growth. Differential reflectivity was particularly useful in providing information'on this type of complex adsorption process without appreciable interference from charging currents or stray faradaic reactions.
Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas
description The first stages of the electroadsorption of ethyl xanthate (EX) on polycrystalline gold have been studied by optical and electrochemical techniques covering the 5 × 10<sup>−6</sup> to 1 × 10<sup>−3</sup> M concentration range. According to ac voltammetry and electroreflectance measurements, the adsorption of EX begins at −1.4 V (vs. SCE), in the HER potential region, followed by a capacitative process at −1.0 V. Both stages can be ascribed to the formation of different bonds between the EX and the gold surface through the sulphur atoms of the molecule. The following electroadsorption stage at −0.7 V implies the formation of a surface compound leading subsequently to layer growth. Differential reflectivity was particularly useful in providing information'on this type of complex adsorption process without appreciable interference from charging currents or stray faradaic reactions.
publishDate 1988
dc.date.none.fl_str_mv 1988-11-10
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/122368
url http://sedici.unlp.edu.ar/handle/10915/122368
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/0022072888800184?via%3Dihub
info:eu-repo/semantics/altIdentifier/issn/0022-0728
info:eu-repo/semantics/altIdentifier/doi/10.1016/0022-0728(88)80018-4
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by/4.0/
Creative Commons Attribution 4.0 International (CC BY 4.0)
dc.format.none.fl_str_mv application/pdf
251-266
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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score 13.070432

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