Otimização da preparação de eletrodo de pasta de carbono contendo riboflavina imobilizada em suporte inorgânico

Detalhes bibliográficos
Autor(a) principal: Pereira,Arnaldo César
Data de Publicação: 2004
Outros Autores: Kubota,Lauro Tatsuo
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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spelling 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
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