Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00604-018-2710-0 http://hdl.handle.net/11449/179581 |
Resumo: | This paper reports on the development of an amperometric method for the determination of myo-inositol. The method involves coating of a glassy carbon electrode (GCE) with a molecularly imprinted polymer (MIP) and reduced graphene oxide (RGO) that was modified with nickel nanoparticles (NiNPs). The MIP was prepared by electropolymerization of pyrrole on the surface of the GCE in the presence of myo-inositol molecules. The construction steps of the modified electrode were monitored via cyclic voltammetry, atomic force microscopy, scanning electron microscopy and X-ray Photoelectron Spectroscopy. The results were evaluated using differential pulse voltammetry, in which hexacyanoferrate was used as an electrochemically active probe. Under optimized experimental conditions, the imprint-modified GCE has a linear response in the 1.0 × 10−10 mol L−1 to 1.0 × 10−8 mol L−1 concentration range, with a 7.6 × 10−11 mol L−1 detection limit and an electrochemical sensitivity of 4.5 μA·cm-2 μmol−1. The method showed improved selectivity even in the presence of molecules with similar chemical structure. The GCE modified was successfully applied to the determination of myo-inositol in sugarcane vinasse where it yielded recoveries that ranged from 95 to 102%. [Figure not available: see fulltext.]. |
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spelling |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticlesElectrochemical determinationElectropolymerizationMetallic nanoparticleMolecularly imprinted polymerPolyol compoundsPyrroleThis paper reports on the development of an amperometric method for the determination of myo-inositol. The method involves coating of a glassy carbon electrode (GCE) with a molecularly imprinted polymer (MIP) and reduced graphene oxide (RGO) that was modified with nickel nanoparticles (NiNPs). The MIP was prepared by electropolymerization of pyrrole on the surface of the GCE in the presence of myo-inositol molecules. The construction steps of the modified electrode were monitored via cyclic voltammetry, atomic force microscopy, scanning electron microscopy and X-ray Photoelectron Spectroscopy. The results were evaluated using differential pulse voltammetry, in which hexacyanoferrate was used as an electrochemically active probe. Under optimized experimental conditions, the imprint-modified GCE has a linear response in the 1.0 × 10−10 mol L−1 to 1.0 × 10−8 mol L−1 concentration range, with a 7.6 × 10−11 mol L−1 detection limit and an electrochemical sensitivity of 4.5 μA·cm-2 μmol−1. The method showed improved selectivity even in the presence of molecules with similar chemical structure. The GCE modified was successfully applied to the determination of myo-inositol in sugarcane vinasse where it yielded recoveries that ranged from 95 to 102%. [Figure not available: see fulltext.].Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Institute of Chemistry São Paulo State University (UNESP)Bioenergy Research Institute São Paulo State University (UNESP)School of Metallurgical and Industrial Engineering Volta Redonda Fluminense Federal University (UFF)Institute of Chemistry São Paulo State University (UNESP)Bioenergy Research Institute São Paulo State University (UNESP)FAPESP: 2014/23846-5Universidade Estadual Paulista (Unesp)Fluminense Federal University (UFF)Beluomini, Maísa Azevedo [UNESP]da Silva, José Luiz [UNESP]Stradiotto, Nelson Ramos [UNESP]2018-12-11T17:35:54Z2018-12-11T17:35:54Z2018-03-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1007/s00604-018-2710-0Microchimica Acta, v. 185, n. 3, 2018.1436-50730026-3672http://hdl.handle.net/11449/17958110.1007/s00604-018-2710-02-s2.0-850419147832-s2.0-85041914783.pdf0072173018005712Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengMicrochimica Acta1,2401,240info:eu-repo/semantics/openAccess2024-01-28T06:50:23Zoai:repositorio.unesp.br:11449/179581Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-06T00:09:47.958321Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles |
title |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles |
spellingShingle |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles Beluomini, Maísa Azevedo [UNESP] Electrochemical determination Electropolymerization Metallic nanoparticle Molecularly imprinted polymer Polyol compounds Pyrrole |
title_short |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles |
title_full |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles |
title_fullStr |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles |
title_full_unstemmed |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles |
title_sort |
Amperometric determination of myo-inositol by using a glassy carbon electrode modified with molecularly imprinted polypyrrole, reduced graphene oxide and nickel nanoparticles |
author |
Beluomini, Maísa Azevedo [UNESP] |
author_facet |
Beluomini, Maísa Azevedo [UNESP] da Silva, José Luiz [UNESP] Stradiotto, Nelson Ramos [UNESP] |
author_role |
author |
author2 |
da Silva, José Luiz [UNESP] Stradiotto, Nelson Ramos [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) Fluminense Federal University (UFF) |
dc.contributor.author.fl_str_mv |
Beluomini, Maísa Azevedo [UNESP] da Silva, José Luiz [UNESP] Stradiotto, Nelson Ramos [UNESP] |
dc.subject.por.fl_str_mv |
Electrochemical determination Electropolymerization Metallic nanoparticle Molecularly imprinted polymer Polyol compounds Pyrrole |
topic |
Electrochemical determination Electropolymerization Metallic nanoparticle Molecularly imprinted polymer Polyol compounds Pyrrole |
description |
This paper reports on the development of an amperometric method for the determination of myo-inositol. The method involves coating of a glassy carbon electrode (GCE) with a molecularly imprinted polymer (MIP) and reduced graphene oxide (RGO) that was modified with nickel nanoparticles (NiNPs). The MIP was prepared by electropolymerization of pyrrole on the surface of the GCE in the presence of myo-inositol molecules. The construction steps of the modified electrode were monitored via cyclic voltammetry, atomic force microscopy, scanning electron microscopy and X-ray Photoelectron Spectroscopy. The results were evaluated using differential pulse voltammetry, in which hexacyanoferrate was used as an electrochemically active probe. Under optimized experimental conditions, the imprint-modified GCE has a linear response in the 1.0 × 10−10 mol L−1 to 1.0 × 10−8 mol L−1 concentration range, with a 7.6 × 10−11 mol L−1 detection limit and an electrochemical sensitivity of 4.5 μA·cm-2 μmol−1. The method showed improved selectivity even in the presence of molecules with similar chemical structure. The GCE modified was successfully applied to the determination of myo-inositol in sugarcane vinasse where it yielded recoveries that ranged from 95 to 102%. [Figure not available: see fulltext.]. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-12-11T17:35:54Z 2018-12-11T17:35:54Z 2018-03-01 |
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/10.1007/s00604-018-2710-0 Microchimica Acta, v. 185, n. 3, 2018. 1436-5073 0026-3672 http://hdl.handle.net/11449/179581 10.1007/s00604-018-2710-0 2-s2.0-85041914783 2-s2.0-85041914783.pdf 0072173018005712 |
url |
http://dx.doi.org/10.1007/s00604-018-2710-0 http://hdl.handle.net/11449/179581 |
identifier_str_mv |
Microchimica Acta, v. 185, n. 3, 2018. 1436-5073 0026-3672 10.1007/s00604-018-2710-0 2-s2.0-85041914783 2-s2.0-85041914783.pdf 0072173018005712 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Microchimica Acta 1,240 1,240 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
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_ |
1808129591076716544 |