Preparation and voltammetric studies of titanium (IV) Phosphate modified with silver hexacyanoferrate to a voltammetric determination of L-cysteine

Detalhes bibliográficos
Autor(a) principal: Cumba, Loanda Raquel [UNESP]
Data de Publicação: 2012
Outros Autores: Bicalho, Urquisa de Oliveira [UNESP], Carmo, Devaney Ribeiro do [UNESP]
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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spelling 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
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