Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium
Autor(a) principal: | |
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Data de Publicação: | 2011 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1016/j.electacta.2010.11.094 http://hdl.handle.net/11449/6973 |
Resumo: | The participation of cations in redox reactions of manganese oxides provides an opportunity for development of chemical sensors for non-electroactive ions. This paper describes the amperometric determination of lithium ions using carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions. Systematic investigations were made to optimize the experimental parameters for lithium sensor by flow injection analysis. The detection was based on the measurement of anodic current generated by oxidation of Mn(III) to Mn(IV) at the surface of the electrode and consequently the lithium ions extraction into the spinel structure. An operating potential of 0.50 V (vs. Ag/AgCl/3 KCl mol/L) was exploited for amperometric monitoring. The amperometric signal was linearly dependent on the lithium ions concentration over the range 4.0 x 10(-5) to 1.0 x 10(-3) mol L-1. The equilibrium constant of insertion/extraction of the lithium ion in the spine! structure, apparent Gibbs energy of insertion, and surface coverage of the electrode with manganese oxide, were calculated by peak charge (Q) in different concentration under flow conditions. Considering selectivity, the peak charge of the sensor was found to be linearly dependent on the ionic radius of the alkaline and earth-alkaline cations. (C) 2010 Elsevier Ltd. All rights reserved. |
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Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithiumAmperometric sensorSpinel-type manganese oxideNon-electroactive ionsGibbs energyThe participation of cations in redox reactions of manganese oxides provides an opportunity for development of chemical sensors for non-electroactive ions. This paper describes the amperometric determination of lithium ions using carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions. Systematic investigations were made to optimize the experimental parameters for lithium sensor by flow injection analysis. The detection was based on the measurement of anodic current generated by oxidation of Mn(III) to Mn(IV) at the surface of the electrode and consequently the lithium ions extraction into the spinel structure. An operating potential of 0.50 V (vs. Ag/AgCl/3 KCl mol/L) was exploited for amperometric monitoring. The amperometric signal was linearly dependent on the lithium ions concentration over the range 4.0 x 10(-5) to 1.0 x 10(-3) mol L-1. The equilibrium constant of insertion/extraction of the lithium ion in the spine! structure, apparent Gibbs energy of insertion, and surface coverage of the electrode with manganese oxide, were calculated by peak charge (Q) in different concentration under flow conditions. Considering selectivity, the peak charge of the sensor was found to be linearly dependent on the ionic radius of the alkaline and earth-alkaline cations. (C) 2010 Elsevier Ltd. All rights reserved.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ State São Paulo UNESP, Fac Sci & Technol, Dept Phys Chem & Biol, BR-19060900 Presidente Prudente, SP, BrazilUniversidade Federal do Paraná (UFPR), Dept Quim, BR-80060000 Curitiba, Parana, BrazilUniversidade Federal de São Carlos (UFSCar), Dept Quim, BR-13560 São Carlos, SP, BrazilUniv State São Paulo UNESP, Fac Sci & Technol, Dept Phys Chem & Biol, BR-19060900 Presidente Prudente, SP, BrazilFAPESP: 08/07298-7FAPESP: 09/11079-1CNPq: 474367/2004-5Pergamon-Elsevier B.V. LtdUniversidade Estadual Paulista (Unesp)Universidade Federal do Paraná (UFPR)Universidade Federal de São Carlos (UFSCar)Raymundo-Pereira, Paulo A. [UNESP]Martin, Cibely S. [UNESP]Bergamini, Marcio F.Bocchi, NerilsoTeixeira, Marcos F. S. [UNESP]2014-05-20T13:23:13Z2014-05-20T13:23:13Z2011-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article2552-2558application/pdfhttp://dx.doi.org/10.1016/j.electacta.2010.11.094Electrochimica Acta. Oxford: Pergamon-Elsevier B.V. Ltd, v. 56, n. 5, p. 2552-2558, 2011.0013-4686http://hdl.handle.net/11449/697310.1016/j.electacta.2010.11.094WOS:000288227800090WOS000288227800090.pdfWeb of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengElectrochimica Acta5.1161,439info:eu-repo/semantics/openAccess2024-06-18T18:17:51Zoai:repositorio.unesp.br:11449/6973Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T14:46:59.960114Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium |
title |
Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium |
spellingShingle |
Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium Raymundo-Pereira, Paulo A. [UNESP] Amperometric sensor Spinel-type manganese oxide Non-electroactive ions Gibbs energy |
title_short |
Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium |
title_full |
Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium |
title_fullStr |
Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium |
title_full_unstemmed |
Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium |
title_sort |
Electrochemical evaluation of the a carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions for amperometric determination of lithium |
author |
Raymundo-Pereira, Paulo A. [UNESP] |
author_facet |
Raymundo-Pereira, Paulo A. [UNESP] Martin, Cibely S. [UNESP] Bergamini, Marcio F. Bocchi, Nerilso Teixeira, Marcos F. S. [UNESP] |
author_role |
author |
author2 |
Martin, Cibely S. [UNESP] Bergamini, Marcio F. Bocchi, Nerilso Teixeira, Marcos F. S. [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Universidade Federal do Paraná (UFPR) Universidade Federal de São Carlos (UFSCar) |
dc.contributor.author.fl_str_mv |
Raymundo-Pereira, Paulo A. [UNESP] Martin, Cibely S. [UNESP] Bergamini, Marcio F. Bocchi, Nerilso Teixeira, Marcos F. S. [UNESP] |
dc.subject.por.fl_str_mv |
Amperometric sensor Spinel-type manganese oxide Non-electroactive ions Gibbs energy |
topic |
Amperometric sensor Spinel-type manganese oxide Non-electroactive ions Gibbs energy |
description |
The participation of cations in redox reactions of manganese oxides provides an opportunity for development of chemical sensors for non-electroactive ions. This paper describes the amperometric determination of lithium ions using carbon-paste electrode modified with spinel manganese(IV) oxide under flow conditions. Systematic investigations were made to optimize the experimental parameters for lithium sensor by flow injection analysis. The detection was based on the measurement of anodic current generated by oxidation of Mn(III) to Mn(IV) at the surface of the electrode and consequently the lithium ions extraction into the spinel structure. An operating potential of 0.50 V (vs. Ag/AgCl/3 KCl mol/L) was exploited for amperometric monitoring. The amperometric signal was linearly dependent on the lithium ions concentration over the range 4.0 x 10(-5) to 1.0 x 10(-3) mol L-1. The equilibrium constant of insertion/extraction of the lithium ion in the spine! structure, apparent Gibbs energy of insertion, and surface coverage of the electrode with manganese oxide, were calculated by peak charge (Q) in different concentration under flow conditions. Considering selectivity, the peak charge of the sensor was found to be linearly dependent on the ionic radius of the alkaline and earth-alkaline cations. (C) 2010 Elsevier Ltd. All rights reserved. |
publishDate |
2011 |
dc.date.none.fl_str_mv |
2011-02-01 2014-05-20T13:23:13Z 2014-05-20T13:23:13Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1016/j.electacta.2010.11.094 Electrochimica Acta. Oxford: Pergamon-Elsevier B.V. Ltd, v. 56, n. 5, p. 2552-2558, 2011. 0013-4686 http://hdl.handle.net/11449/6973 10.1016/j.electacta.2010.11.094 WOS:000288227800090 WOS000288227800090.pdf |
url |
http://dx.doi.org/10.1016/j.electacta.2010.11.094 http://hdl.handle.net/11449/6973 |
identifier_str_mv |
Electrochimica Acta. Oxford: Pergamon-Elsevier B.V. Ltd, v. 56, n. 5, p. 2552-2558, 2011. 0013-4686 10.1016/j.electacta.2010.11.094 WOS:000288227800090 WOS000288227800090.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Electrochimica Acta 5.116 1,439 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
2552-2558 application/pdf |
dc.publisher.none.fl_str_mv |
Pergamon-Elsevier B.V. Ltd |
publisher.none.fl_str_mv |
Pergamon-Elsevier B.V. Ltd |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
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1808128415945981952 |