Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.21577/0103-5053.20200174 http://hdl.handle.net/11449/208308 |
Resumo: | A molecularly imprinted electrochemical sensor for determination of isoamyl alcohol was successfully constructed by modifying the glassy carbon electrode (GCE) with gold nanoparticles (AuNPs) and reduced graphene oxide (RGO). The modification of the GCE increased the electron transfer rate and the electrode surface area, which, consequently, made more room available for the formation of the molecularly imprinted polymer (MIP). The development of the MIP on the modified surface was carried out via electropolymerization of the pyrrole in acetate buffer solution in the presence of the target molecule. The MIP-AuNPs-RGO/GCE showed low limit of detection (8.4 × 10-8 mol L-1), satisfactory quantification range, amperometric sensitivity of 1.1 A L mol-1, excellent reproducibility and stability. Even when in the presence of analogous molecules, the sensor exhibited excellent selectivity. These results suggest that the proposed sensor is suitable for the detection of isoamyl alcohol in fusel oil samples. |
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Repositório Institucional da UNESP |
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Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oilFusel oilGold nanoparticlesIsoamyl alcoholMolecularly imprinted polypyrroleReduced graphene oxideA molecularly imprinted electrochemical sensor for determination of isoamyl alcohol was successfully constructed by modifying the glassy carbon electrode (GCE) with gold nanoparticles (AuNPs) and reduced graphene oxide (RGO). The modification of the GCE increased the electron transfer rate and the electrode surface area, which, consequently, made more room available for the formation of the molecularly imprinted polymer (MIP). The development of the MIP on the modified surface was carried out via electropolymerization of the pyrrole in acetate buffer solution in the presence of the target molecule. The MIP-AuNPs-RGO/GCE showed low limit of detection (8.4 × 10-8 mol L-1), satisfactory quantification range, amperometric sensitivity of 1.1 A L mol-1, excellent reproducibility and stability. Even when in the presence of analogous molecules, the sensor exhibited excellent selectivity. These results suggest that the proposed sensor is suitable for the detection of isoamyl alcohol in fusel oil samples.Instituto de Química Universidade Estadual Paulista (Unesp)Instituto de Pesquisa em Bioenergia Universidade Estadual Paulista (Unesp)Instituto de Química Universidade Estadual Paulista (Unesp)Instituto de Pesquisa em Bioenergia Universidade Estadual Paulista (Unesp)Universidade Estadual Paulista (Unesp)Mariano, Thiago M. [UNESP]Beluomini, Maísa A. [UNESP]Stradiotto, Nelson R. [UNESP]2021-06-25T11:10:05Z2021-06-25T11:10:05Z2021-02-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article249-259application/pdfhttp://dx.doi.org/10.21577/0103-5053.20200174Journal of the Brazilian Chemical Society, v. 32, n. 2, p. 249-259, 2021.1678-47900103-5053http://hdl.handle.net/11449/20830810.21577/0103-5053.20200174S0103-505320210002002492-s2.0-85099174428S0103-50532021000200249.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal of the Brazilian Chemical Societyinfo:eu-repo/semantics/openAccess2023-12-22T06:26:28Zoai:repositorio.unesp.br:11449/208308Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:03:03.007812Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil |
title |
Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil |
spellingShingle |
Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil Mariano, Thiago M. [UNESP] Fusel oil Gold nanoparticles Isoamyl alcohol Molecularly imprinted polypyrrole Reduced graphene oxide |
title_short |
Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil |
title_full |
Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil |
title_fullStr |
Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil |
title_full_unstemmed |
Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil |
title_sort |
Molecularly imprinted polypyrrole on glassy carbon electrode modified with reduced graphene oxide and gold nanoparticles for isoamyl alcohol analysis in fusel oil |
author |
Mariano, Thiago M. [UNESP] |
author_facet |
Mariano, Thiago M. [UNESP] Beluomini, Maísa A. [UNESP] Stradiotto, Nelson R. [UNESP] |
author_role |
author |
author2 |
Beluomini, Maísa A. [UNESP] Stradiotto, Nelson R. [UNESP] |
author2_role |
author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Mariano, Thiago M. [UNESP] Beluomini, Maísa A. [UNESP] Stradiotto, Nelson R. [UNESP] |
dc.subject.por.fl_str_mv |
Fusel oil Gold nanoparticles Isoamyl alcohol Molecularly imprinted polypyrrole Reduced graphene oxide |
topic |
Fusel oil Gold nanoparticles Isoamyl alcohol Molecularly imprinted polypyrrole Reduced graphene oxide |
description |
A molecularly imprinted electrochemical sensor for determination of isoamyl alcohol was successfully constructed by modifying the glassy carbon electrode (GCE) with gold nanoparticles (AuNPs) and reduced graphene oxide (RGO). The modification of the GCE increased the electron transfer rate and the electrode surface area, which, consequently, made more room available for the formation of the molecularly imprinted polymer (MIP). The development of the MIP on the modified surface was carried out via electropolymerization of the pyrrole in acetate buffer solution in the presence of the target molecule. The MIP-AuNPs-RGO/GCE showed low limit of detection (8.4 × 10-8 mol L-1), satisfactory quantification range, amperometric sensitivity of 1.1 A L mol-1, excellent reproducibility and stability. Even when in the presence of analogous molecules, the sensor exhibited excellent selectivity. These results suggest that the proposed sensor is suitable for the detection of isoamyl alcohol in fusel oil samples. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-06-25T11:10:05Z 2021-06-25T11:10:05Z 2021-02-01 |
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/10.21577/0103-5053.20200174 Journal of the Brazilian Chemical Society, v. 32, n. 2, p. 249-259, 2021. 1678-4790 0103-5053 http://hdl.handle.net/11449/208308 10.21577/0103-5053.20200174 S0103-50532021000200249 2-s2.0-85099174428 S0103-50532021000200249.pdf |
url |
http://dx.doi.org/10.21577/0103-5053.20200174 http://hdl.handle.net/11449/208308 |
identifier_str_mv |
Journal of the Brazilian Chemical Society, v. 32, n. 2, p. 249-259, 2021. 1678-4790 0103-5053 10.21577/0103-5053.20200174 S0103-50532021000200249 2-s2.0-85099174428 S0103-50532021000200249.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Journal of the Brazilian Chemical Society |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
249-259 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_ |
1808129278363041792 |