Cuprous oxide layers grown on copper: effect of CO adsorption

The semiconducting properties of anodic passive films formed on polycrystalline copper in aqueous borax solutions, pH 9.2, are studied using electrochemical impedance spectroscopy (EIS) and voltammetry. The semiconducting nature of the cuprous passive layer is analysed in the potential region near d...

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Autores principales: Gassa, Liliana Mabel, Castro Luna Berenguer, Ana María del Carmen, Torres Sánchez, Rosa María, Zerbino, Jorge Omar
Formato: Articulo
Lenguaje:Inglés
Publicado: 2004
Materias:
Química
Copper oxide
Carbon monoxide
EIS
Isoelectric point
Semiconducting properties
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/128206
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-128206
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Copper oxide
Carbon monoxide
EIS
Isoelectric point
Semiconducting properties
spellingShingle Química
Copper oxide
Carbon monoxide
EIS
Isoelectric point
Semiconducting properties
Gassa, Liliana Mabel
Castro Luna Berenguer, Ana María del Carmen
Torres Sánchez, Rosa María
Zerbino, Jorge Omar
Cuprous oxide layers grown on copper: effect of CO adsorption
topic_facet Química
Copper oxide
Carbon monoxide
EIS
Isoelectric point
Semiconducting properties
description The semiconducting properties of anodic passive films formed on polycrystalline copper in aqueous borax solutions, pH 9.2, are studied using electrochemical impedance spectroscopy (EIS) and voltammetry. The semiconducting nature of the cuprous passive layer is analysed in the potential region near de rest potential as a function of the electrode potential and the presence of CO dissolved in the electrolyte. The oxide formation is explained as a sequence of Cu2O growth, cation adsorption, Cu(II), and dissolution steps similarly to previous reported investigations for the metal in CO free solutions. The different growth conditions change the defect or excess of cations accumulated in the outer side of the cuprous layer/electrolyte interface leading to different semiconducting properties.
format Articulo
Articulo
author Gassa, Liliana Mabel
Castro Luna Berenguer, Ana María del Carmen
Torres Sánchez, Rosa María
Zerbino, Jorge Omar
author_facet Gassa, Liliana Mabel
Castro Luna Berenguer, Ana María del Carmen
Torres Sánchez, Rosa María
Zerbino, Jorge Omar
author_sort Gassa, Liliana Mabel
title Cuprous oxide layers grown on copper: effect of CO adsorption
title_short Cuprous oxide layers grown on copper: effect of CO adsorption
title_full Cuprous oxide layers grown on copper: effect of CO adsorption
title_fullStr Cuprous oxide layers grown on copper: effect of CO adsorption
title_full_unstemmed Cuprous oxide layers grown on copper: effect of CO adsorption
title_sort cuprous oxide layers grown on copper: effect of co adsorption
publishDate 2004
url http://sedici.unlp.edu.ar/handle/10915/128206
work_keys_str_mv AT gassalilianamabel cuprousoxidelayersgrownoncoppereffectofcoadsorption
AT castrolunaberengueranamariadelcarmen cuprousoxidelayersgrownoncoppereffectofcoadsorption
AT torressanchezrosamaria cuprousoxidelayersgrownoncoppereffectofcoadsorption
AT zerbinojorgeomar cuprousoxidelayersgrownoncoppereffectofcoadsorption
bdutipo_str Repositorios
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