Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte

Quasi-2d silver electrodeposits were grown electrochemically at constant potential from aqueous Ag+ ion-containing solutions in the presence of a supporting electrolyte, at room temperature, using a three-electrode quasi-2d circular electrochemical cell. Open branching and dense radial branching pat...

Descripción completa

Detalles Bibliográficos
Autores: Schilardi, P. L., Marchiano, S. L., Salvarezza, Roberto Carlos, Hernández Creus, A., Arvia, Alejandro Jorge
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:1997
País:Argentina
Institución:Universidad Nacional de La Plata
Repositorio:SEDICI (UNLP)
Idioma:inglés
OAI Identifier:oai:sedici.unlp.edu.ar:10915/121493
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/121493
Access Level:acceso abierto
Palabra clave:Ciencias Exactas
Química
Silver
Electrodeposits
Kinetics
Growth
Supporting electrolyte
id AR_d13fd63aed765c447818c7cfe73e893f
oai_identifier_str oai:sedici.unlp.edu.ar:10915/121493
network_acronym_str AR
network_name_str Argentina
repository_id_str
spelling Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyteSchilardi, P. L.Marchiano, S. L.Salvarezza, Roberto CarlosHernández Creus, A.Arvia, Alejandro JorgeCiencias ExactasQuímicaSilverElectrodepositsKineticsGrowthSupporting electrolyteQuasi-2d silver electrodeposits were grown electrochemically at constant potential from aqueous Ag+ ion-containing solutions in the presence of a supporting electrolyte, at room temperature, using a three-electrode quasi-2d circular electrochemical cell. Open branching and dense radial branching patterns were distinguished on the centimetre scale, and growth mode transitions could be observed during the process. Branching patterns exhibited a mass fractal behaviour with a mass fractal dimension increasing from that expected for a DLA-like pattern to that of a dense branching pattern as either the cathodic overpotential (ηc) or the Ag+ ion concentration in the solution (c) was increased. The electrodeposition current increased with time exhibiting different regimes depending on whether an open branching or a dense radial branching growth mode prevailed. When the electrodeposition time exceeded a certain critical value, the radial growth rate of electrodeposits (vr) approached a vr α ηcc relationship. The experimental morphologies and growth kinetics were reproduced by Monte Carlo simulations of a growth model in which depositing particles follow a biased random walk.Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas1997info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf81-98http://sedici.unlp.edu.ar/handle/10915/121493enginfo:eu-repo/semantics/altIdentifier/issn/0022-0728info:eu-repo/semantics/altIdentifier/doi/10.1016/S0022-0728(97)00004-1info: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:UNLP2024-05-08T13:06:58Zoai:sedici.unlp.edu.ar:10915/121493Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292024-05-08 13:06:59.071SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte
title Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte
spellingShingle Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte
Schilardi, P. L.
Ciencias Exactas
Química
Silver
Electrodeposits
Kinetics
Growth
Supporting electrolyte
title_short Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte
title_full Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte
title_fullStr Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte
title_full_unstemmed Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte
title_sort Kinetics and growth modes of quasi-2d silver branched electrodeposits produced in the presence of a supporting electrolyte
dc.creator.none.fl_str_mv Schilardi, P. L.
Marchiano, S. L.
Salvarezza, Roberto Carlos
Hernández Creus, A.
Arvia, Alejandro Jorge
author Schilardi, P. L.
author_facet Schilardi, P. L.
Marchiano, S. L.
Salvarezza, Roberto Carlos
Hernández Creus, A.
Arvia, Alejandro Jorge
author_role author
author2 Marchiano, S. L.
Salvarezza, Roberto Carlos
Hernández Creus, A.
Arvia, Alejandro Jorge
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas
Química
Silver
Electrodeposits
Kinetics
Growth
Supporting electrolyte
topic Ciencias Exactas
Química
Silver
Electrodeposits
Kinetics
Growth
Supporting electrolyte
description Quasi-2d silver electrodeposits were grown electrochemically at constant potential from aqueous Ag+ ion-containing solutions in the presence of a supporting electrolyte, at room temperature, using a three-electrode quasi-2d circular electrochemical cell. Open branching and dense radial branching patterns were distinguished on the centimetre scale, and growth mode transitions could be observed during the process. Branching patterns exhibited a mass fractal behaviour with a mass fractal dimension increasing from that expected for a DLA-like pattern to that of a dense branching pattern as either the cathodic overpotential (ηc) or the Ag+ ion concentration in the solution (c) was increased. The electrodeposition current increased with time exhibiting different regimes depending on whether an open branching or a dense radial branching growth mode prevailed. When the electrodeposition time exceeded a certain critical value, the radial growth rate of electrodeposits (vr) approached a vr α ηcc relationship. The experimental morphologies and growth kinetics were reproduced by Monte Carlo simulations of a growth model in which depositing particles follow a biased random walk.
publishDate 1997
dc.date.none.fl_str_mv 1997
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/10915/121493
url http://sedici.unlp.edu.ar/handle/10915/121493
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0022-0728
info:eu-repo/semantics/altIdentifier/doi/10.1016/S0022-0728(97)00004-1
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
81-98
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1799194376849588224
score 15,812429

Similares en LA Referencia