Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III)
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://www.electrochemsci.org/papers/vol8/80100872.pdf http://hdl.handle.net/11449/74094 |
Resumo: | A hybrid nanocomposite formed by interaction of a octa (3-chloropropyl)octasilsesquioxane modified with imidazol , and its subsequent reaction with cadmium and hexacyanoferrate (II) (CdHSSI) was incorporated into a graphite paste electrode and the electrochemical studies were conducted with cyclic voltammetry. The cyclic voltammogram of the modified graphite paste electrode with CdHSSI (GPE- CdHSSI), showed one redox couple with formal potential Eθ=0.14V (vs Ag/AgCl, NaNO3, 1.0 mol L-1; v = 20 mV s-1), attributed to the Fe2+(CN)6/ Fe3+(CN)6 process. The redox couple presents an electrocatalytic response for determination of ascorbic acid. The modified electrode gives a linear range from 2.0×10-4 mol L-1 to 9.0×10-4 mol L-1 (r=0.998) for the determination of ascorbic acid with detection limit of 1.21×10-4 mol L-1 with a relative standard deviation of 5% (n=3) and amperometric sensitivity of 6.217 mA/ mol L-1 for ascorbic acid. © 2013 by ESG. |
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Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III)Ascorbic acidGraphite paste electrodeImidazoleSilsesquioxaneVoltammetryA hybrid nanocomposite formed by interaction of a octa (3-chloropropyl)octasilsesquioxane modified with imidazol , and its subsequent reaction with cadmium and hexacyanoferrate (II) (CdHSSI) was incorporated into a graphite paste electrode and the electrochemical studies were conducted with cyclic voltammetry. The cyclic voltammogram of the modified graphite paste electrode with CdHSSI (GPE- CdHSSI), showed one redox couple with formal potential Eθ=0.14V (vs Ag/AgCl, NaNO3, 1.0 mol L-1; v = 20 mV s-1), attributed to the Fe2+(CN)6/ Fe3+(CN)6 process. The redox couple presents an electrocatalytic response for determination of ascorbic acid. The modified electrode gives a linear range from 2.0×10-4 mol L-1 to 9.0×10-4 mol L-1 (r=0.998) for the determination of ascorbic acid with detection limit of 1.21×10-4 mol L-1 with a relative standard deviation of 5% (n=3) and amperometric sensitivity of 6.217 mA/ mol L-1 for ascorbic acid. © 2013 by ESG.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Faculdade de Engenharia de Ilha Solteira UNESP - Universidade Estadual Paulista Departamento de Física e Química, Av. Brasil Centro, 56, CEP 15385-000, Ilha Solteira, SPFaculdade de Engenharia de Ilha Solteira UNESP - Universidade Estadual Paulista Departamento de Física e Química, Av. Brasil Centro, 56, CEP 15385-000, Ilha Solteira, SPFAPESP: 03/12882-6Universidade Estadual Paulista (Unesp)Silveira, Tayla Fernanda Serantoni da [UNESP]Silvestrini, Daniela Rodrigues [UNESP]Bicalho, Urquisa de Oliveira [UNESP]Carmo, Devaney Ribeiro do [UNESP]2014-05-27T11:27:26Z2014-05-27T11:27:26Z2013-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article872-886http://www.electrochemsci.org/papers/vol8/80100872.pdfInternational Journal of Electrochemical Science, v. 8, n. 1, p. 872-886, 2013.1452-3981http://hdl.handle.net/11449/74094WOS:0003165628000672-s2.0-8487387806916147456978700030545046720519536Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Electrochemical Science1.3690,366info:eu-repo/semantics/openAccess2024-07-10T14:08:18Zoai:repositorio.unesp.br:11449/74094Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:14:22.276275Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III) |
title |
Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III) |
spellingShingle |
Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III) Silveira, Tayla Fernanda Serantoni da [UNESP] Ascorbic acid Graphite paste electrode Imidazole Silsesquioxane Voltammetry |
title_short |
Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III) |
title_full |
Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III) |
title_fullStr |
Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III) |
title_full_unstemmed |
Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III) |
title_sort |
Voltammetric Study of a Cubic Silsesquioxane Organically Modified with Imidazole and their Subsequent Reaction with Cadmium and Hexacyanoferrate (III) |
author |
Silveira, Tayla Fernanda Serantoni da [UNESP] |
author_facet |
Silveira, Tayla Fernanda Serantoni da [UNESP] Silvestrini, Daniela Rodrigues [UNESP] Bicalho, Urquisa de Oliveira [UNESP] Carmo, Devaney Ribeiro do [UNESP] |
author_role |
author |
author2 |
Silvestrini, Daniela Rodrigues [UNESP] Bicalho, Urquisa de Oliveira [UNESP] Carmo, Devaney Ribeiro do [UNESP] |
author2_role |
author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Silveira, Tayla Fernanda Serantoni da [UNESP] Silvestrini, Daniela Rodrigues [UNESP] Bicalho, Urquisa de Oliveira [UNESP] Carmo, Devaney Ribeiro do [UNESP] |
dc.subject.por.fl_str_mv |
Ascorbic acid Graphite paste electrode Imidazole Silsesquioxane Voltammetry |
topic |
Ascorbic acid Graphite paste electrode Imidazole Silsesquioxane Voltammetry |
description |
A hybrid nanocomposite formed by interaction of a octa (3-chloropropyl)octasilsesquioxane modified with imidazol , and its subsequent reaction with cadmium and hexacyanoferrate (II) (CdHSSI) was incorporated into a graphite paste electrode and the electrochemical studies were conducted with cyclic voltammetry. The cyclic voltammogram of the modified graphite paste electrode with CdHSSI (GPE- CdHSSI), showed one redox couple with formal potential Eθ=0.14V (vs Ag/AgCl, NaNO3, 1.0 mol L-1; v = 20 mV s-1), attributed to the Fe2+(CN)6/ Fe3+(CN)6 process. The redox couple presents an electrocatalytic response for determination of ascorbic acid. The modified electrode gives a linear range from 2.0×10-4 mol L-1 to 9.0×10-4 mol L-1 (r=0.998) for the determination of ascorbic acid with detection limit of 1.21×10-4 mol L-1 with a relative standard deviation of 5% (n=3) and amperometric sensitivity of 6.217 mA/ mol L-1 for ascorbic acid. © 2013 by ESG. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013-01-01 2014-05-27T11:27:26Z 2014-05-27T11:27:26Z |
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://www.electrochemsci.org/papers/vol8/80100872.pdf International Journal of Electrochemical Science, v. 8, n. 1, p. 872-886, 2013. 1452-3981 http://hdl.handle.net/11449/74094 WOS:000316562800067 2-s2.0-84873878069 1614745697870003 0545046720519536 |
url |
http://www.electrochemsci.org/papers/vol8/80100872.pdf http://hdl.handle.net/11449/74094 |
identifier_str_mv |
International Journal of Electrochemical Science, v. 8, n. 1, p. 872-886, 2013. 1452-3981 WOS:000316562800067 2-s2.0-84873878069 1614745697870003 0545046720519536 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Electrochemical Science 1.369 0,366 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
872-886 |
dc.source.none.fl_str_mv |
Scopus 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 |
|
_version_ |
1808128242076352512 |