Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine
Autor(a) principal: | |
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Data de Publicação: | 2012 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://hdl.handle.net/11449/226861 |
Resumo: | In this work, a novel Titanium (IV) Phosphate (TiPh) composite was prepared using a easily methodology of the synthesis. A preliminary characterization of the precursor and resulting materials was defined using spectroscopic and voltammetric techniques. As a second step, TiPh was reacted with silver ions (TiPhAg) and subsequent hexacyanoferrate was added (TiPhAgHCF). The electrochemical behaviour of the composite (TiPhAgHCF) was verified by means of a graphite paste electrode using cyclic voltammetry in a potential range of 0.2 to 0.9 V (vs Ag/AgCl). The cyclic voltammogram of the modified electrode containing (TiPhAgHCF) exhibited a single redox couple. The redox couple present a formal potential (E θ') of 0.77 V vs Ag/AgCl (KNO 3 1.0 mol L -1; v = 20 mV s -1) and ascribed to the [Fe II(CN) 6]/[Fe III(CN) 6] processes. In a electroanalytical study, the peak located at 0.77 V present a sensitive response to L-cysteine. The modified graphite paste electrode showed a linear range from 2.0×10 -4 to 9.0×10 -3 mol L -1 for the determination of L-cysteine with a limit detection of 3.34×10 -4 mol L -1 and relative standard deviation of ± 5% (n = 3) and amperometric sensitivity 10.34×10 -3 A mol L -1. The modified electrode was electrochemically stable and showed excellent reproducibility. © 2012 by ESG. |
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Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteineCyclic VoltammetryL-cysteineTitanium (IV) phosphateIn this work, a novel Titanium (IV) Phosphate (TiPh) composite was prepared using a easily methodology of the synthesis. A preliminary characterization of the precursor and resulting materials was defined using spectroscopic and voltammetric techniques. As a second step, TiPh was reacted with silver ions (TiPhAg) and subsequent hexacyanoferrate was added (TiPhAgHCF). The electrochemical behaviour of the composite (TiPhAgHCF) was verified by means of a graphite paste electrode using cyclic voltammetry in a potential range of 0.2 to 0.9 V (vs Ag/AgCl). The cyclic voltammogram of the modified electrode containing (TiPhAgHCF) exhibited a single redox couple. The redox couple present a formal potential (E θ') of 0.77 V vs Ag/AgCl (KNO 3 1.0 mol L -1; v = 20 mV s -1) and ascribed to the [Fe II(CN) 6]/[Fe III(CN) 6] processes. In a electroanalytical study, the peak located at 0.77 V present a sensitive response to L-cysteine. The modified graphite paste electrode showed a linear range from 2.0×10 -4 to 9.0×10 -3 mol L -1 for the determination of L-cysteine with a limit detection of 3.34×10 -4 mol L -1 and relative standard deviation of ± 5% (n = 3) and amperometric sensitivity 10.34×10 -3 A mol L -1. The modified electrode was electrochemically stable and showed excellent reproducibility. © 2012 by ESG.Faculdade de Engenharia de Ilha Solteira UNESP - Univ Estadual Paulista Departamento de Física e Química, Av. Brasil Centro, 56 CEP 15385-000, Ilha SolteiraFaculdade de Engenharia de Ilha Solteira UNESP - Univ Estadual Paulista Departamento de Física e Química, Av. Brasil Centro, 56 CEP 15385-000, Ilha SolteiraUniversidade Estadual Paulista (UNESP)Cumba, Loanda Raquel [UNESP]Bicalho, Urquisa de Oliveira [UNESP]Carmo, Devaney Ribeiro do [UNESP]2022-04-29T02:57:50Z2022-04-29T02:57:50Z2012-07-02info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4465-4478International Journal of Electrochemical Science, v. 7, n. 5, p. 4465-4478, 2012.1452-3981http://hdl.handle.net/11449/2268612-s2.0-84862841164Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengInternational Journal of Electrochemical Scienceinfo:eu-repo/semantics/openAccess2024-07-10T14:07:08Zoai:repositorio.unesp.br:11449/226861Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T13:39:49.672596Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine |
title |
Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine |
spellingShingle |
Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine Cumba, Loanda Raquel [UNESP] Cyclic Voltammetry L-cysteine Titanium (IV) phosphate |
title_short |
Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine |
title_full |
Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine |
title_fullStr |
Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine |
title_full_unstemmed |
Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine |
title_sort |
Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine |
author |
Cumba, Loanda Raquel [UNESP] |
author_facet |
Cumba, Loanda Raquel [UNESP] Bicalho, Urquisa de Oliveira [UNESP] Carmo, Devaney Ribeiro do [UNESP] |
author_role |
author |
author2 |
Bicalho, Urquisa de Oliveira [UNESP] Carmo, Devaney Ribeiro do [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Cumba, Loanda Raquel [UNESP] Bicalho, Urquisa de Oliveira [UNESP] Carmo, Devaney Ribeiro do [UNESP] |
dc.subject.por.fl_str_mv |
Cyclic Voltammetry L-cysteine Titanium (IV) phosphate |
topic |
Cyclic Voltammetry L-cysteine Titanium (IV) phosphate |
description |
In this work, a novel Titanium (IV) Phosphate (TiPh) composite was prepared using a easily methodology of the synthesis. A preliminary characterization of the precursor and resulting materials was defined using spectroscopic and voltammetric techniques. As a second step, TiPh was reacted with silver ions (TiPhAg) and subsequent hexacyanoferrate was added (TiPhAgHCF). The electrochemical behaviour of the composite (TiPhAgHCF) was verified by means of a graphite paste electrode using cyclic voltammetry in a potential range of 0.2 to 0.9 V (vs Ag/AgCl). The cyclic voltammogram of the modified electrode containing (TiPhAgHCF) exhibited a single redox couple. The redox couple present a formal potential (E θ') of 0.77 V vs Ag/AgCl (KNO 3 1.0 mol L -1; v = 20 mV s -1) and ascribed to the [Fe II(CN) 6]/[Fe III(CN) 6] processes. In a electroanalytical study, the peak located at 0.77 V present a sensitive response to L-cysteine. The modified graphite paste electrode showed a linear range from 2.0×10 -4 to 9.0×10 -3 mol L -1 for the determination of L-cysteine with a limit detection of 3.34×10 -4 mol L -1 and relative standard deviation of ± 5% (n = 3) and amperometric sensitivity 10.34×10 -3 A mol L -1. The modified electrode was electrochemically stable and showed excellent reproducibility. © 2012 by ESG. |
publishDate |
2012 |
dc.date.none.fl_str_mv |
2012-07-02 2022-04-29T02:57:50Z 2022-04-29T02:57:50Z |
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 |
International Journal of Electrochemical Science, v. 7, n. 5, p. 4465-4478, 2012. 1452-3981 http://hdl.handle.net/11449/226861 2-s2.0-84862841164 |
identifier_str_mv |
International Journal of Electrochemical Science, v. 7, n. 5, p. 4465-4478, 2012. 1452-3981 2-s2.0-84862841164 |
url |
http://hdl.handle.net/11449/226861 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Electrochemical Science |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
4465-4478 |
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_ |
1808128260920311808 |