Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Química Nova (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000500009 |
Resumo: | The aim of this work was to optimize the preparation of electrodes with riboflavin (RF) immobilized on a silica surface modified with niobium oxide and carbon paste. Electrode preparation was optimized employing a factorial design consisting of two levels and three factors. The electrochemical properties of immobilized RF were investigated by cyclic voltammetry. The factorial analysis was carried out analysing the current intensity (Ipa). It was possible to optimize the electrode to get the best reversibility in the redox process, i. e. the lowest separation between anodic and cathodic peak potentials and a current ratio close to unity. The concentration of supporting electrolyte has a small effect. The proportion has the highest effect and the interaction factor between proportion and mixture has also a significant effect on the current intensity. |
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Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânicocarbon paste electrodeoptimization of electrochemical propertiesfactorial designThe aim of this work was to optimize the preparation of electrodes with riboflavin (RF) immobilized on a silica surface modified with niobium oxide and carbon paste. Electrode preparation was optimized employing a factorial design consisting of two levels and three factors. The electrochemical properties of immobilized RF were investigated by cyclic voltammetry. The factorial analysis was carried out analysing the current intensity (Ipa). It was possible to optimize the electrode to get the best reversibility in the redox process, i. e. the lowest separation between anodic and cathodic peak potentials and a current ratio close to unity. The concentration of supporting electrolyte has a small effect. The proportion has the highest effect and the interaction factor between proportion and mixture has also a significant effect on the current intensity.Sociedade Brasileira de Química2004-10-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000500009Química Nova v.27 n.5 2004reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0100-40422004000500009info:eu-repo/semantics/openAccessPereira,Arnaldo CésarKubota,Lauro Tatsuopor2004-09-17T00:00:00Zoai:scielo:S0100-40422004000500009Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2004-09-17T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico |
title |
Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico |
spellingShingle |
Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico Pereira,Arnaldo César carbon paste electrode optimization of electrochemical properties factorial design |
title_short |
Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico |
title_full |
Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico |
title_fullStr |
Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico |
title_full_unstemmed |
Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico |
title_sort |
Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico |
author |
Pereira,Arnaldo César |
author_facet |
Pereira,Arnaldo César Kubota,Lauro Tatsuo |
author_role |
author |
author2 |
Kubota,Lauro Tatsuo |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Pereira,Arnaldo César Kubota,Lauro Tatsuo |
dc.subject.por.fl_str_mv |
carbon paste electrode optimization of electrochemical properties factorial design |
topic |
carbon paste electrode optimization of electrochemical properties factorial design |
description |
The aim of this work was to optimize the preparation of electrodes with riboflavin (RF) immobilized on a silica surface modified with niobium oxide and carbon paste. Electrode preparation was optimized employing a factorial design consisting of two levels and three factors. The electrochemical properties of immobilized RF were investigated by cyclic voltammetry. The factorial analysis was carried out analysing the current intensity (Ipa). It was possible to optimize the electrode to get the best reversibility in the redox process, i. e. the lowest separation between anodic and cathodic peak potentials and a current ratio close to unity. The concentration of supporting electrolyte has a small effect. The proportion has the highest effect and the interaction factor between proportion and mixture has also a significant effect on the current intensity. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-10-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000500009 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422004000500009 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
10.1590/S0100-40422004000500009 |
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 Brasileira de Química |
publisher.none.fl_str_mv |
Sociedade Brasileira de Química |
dc.source.none.fl_str_mv |
Química Nova v.27 n.5 2004 reponame:Química Nova (Online) instname:Sociedade Brasileira de Química (SBQ) instacron:SBQ |
instname_str |
Sociedade Brasileira de Química (SBQ) |
instacron_str |
SBQ |
institution |
SBQ |
reponame_str |
Química Nova (Online) |
collection |
Química Nova (Online) |
repository.name.fl_str_mv |
Química Nova (Online) - Sociedade Brasileira de Química (SBQ) |
repository.mail.fl_str_mv |
quimicanova@sbq.org.br |
_version_ |
1750318104138743808 |