Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides
Autor(a) principal: | |
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Data de Publicação: | 2019 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000600005 |
Resumo: | The goal of this study was to propose an electrochemical sensor for Paracetamol determination. To reach this objective, a graphite electrode (GE) was modified with iron oxides, and it was tested in an alkaline aqueous solution, in order to appreciate its electrocatalytic properties towards paraacetylaminophenol anodic oxidation. The graphite electrode modification was performed, in a first step, by potentiostatic deposition of an iron film at -1 V/SCE, in an aqueous solution of 0.04 M Fe (NO3)3 + 0.15 M KNO3, followed, in a second step, by cyclic voltammetry in an aqueous solution of 0.1 M sodium hydroxide, at 25 ºC. The modified electrode was characterized by means of scanning electron microscope coupled to an EDAX X-Ray micro-analyser. Paraacetylaminophenol determination by means of this novel sensor was instantaneous in an alkaline solution. The performance of this sensor was obtained in the concentration range from 13 ppm to 320 ppm, with a sensitivity of 1.6×10(4) µA mol-1 L. |
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Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron OxidesElectrocatalytic oxidationiron oxidesparaacetylaminophenolcyclic voltammetrypotentiostatic polarizationelectrochemical sensorThe goal of this study was to propose an electrochemical sensor for Paracetamol determination. To reach this objective, a graphite electrode (GE) was modified with iron oxides, and it was tested in an alkaline aqueous solution, in order to appreciate its electrocatalytic properties towards paraacetylaminophenol anodic oxidation. The graphite electrode modification was performed, in a first step, by potentiostatic deposition of an iron film at -1 V/SCE, in an aqueous solution of 0.04 M Fe (NO3)3 + 0.15 M KNO3, followed, in a second step, by cyclic voltammetry in an aqueous solution of 0.1 M sodium hydroxide, at 25 ºC. The modified electrode was characterized by means of scanning electron microscope coupled to an EDAX X-Ray micro-analyser. Paraacetylaminophenol determination by means of this novel sensor was instantaneous in an alkaline solution. The performance of this sensor was obtained in the concentration range from 13 ppm to 320 ppm, with a sensitivity of 1.6×10(4) µA mol-1 L.Sociedade Portuguesa de Electroquímica2019-12-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articletext/htmlhttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000600005Portugaliae Electrochimica Acta v.37 n.6 2019reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAPenghttp://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000600005Benchettara,AbdelhakimSidoumou,MohamedMehdaoui,RazikaZarrouk,AbdelkaderBenchettara,Abdelkaderinfo:eu-repo/semantics/openAccess2024-02-06T17:07:30Zoai:scielo:S0872-19042019000600005Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T02:20:25.357052Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides |
title |
Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides |
spellingShingle |
Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides Benchettara,Abdelhakim Electrocatalytic oxidation iron oxides paraacetylaminophenol cyclic voltammetry potentiostatic polarization electrochemical sensor |
title_short |
Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides |
title_full |
Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides |
title_fullStr |
Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides |
title_full_unstemmed |
Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides |
title_sort |
Electrocatalytic Oxidation of Paraacetylaminophenol on a Graphite Electrode Modified with Iron Oxides |
author |
Benchettara,Abdelhakim |
author_facet |
Benchettara,Abdelhakim Sidoumou,Mohamed Mehdaoui,Razika Zarrouk,Abdelkader Benchettara,Abdelkader |
author_role |
author |
author2 |
Sidoumou,Mohamed Mehdaoui,Razika Zarrouk,Abdelkader Benchettara,Abdelkader |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Benchettara,Abdelhakim Sidoumou,Mohamed Mehdaoui,Razika Zarrouk,Abdelkader Benchettara,Abdelkader |
dc.subject.por.fl_str_mv |
Electrocatalytic oxidation iron oxides paraacetylaminophenol cyclic voltammetry potentiostatic polarization electrochemical sensor |
topic |
Electrocatalytic oxidation iron oxides paraacetylaminophenol cyclic voltammetry potentiostatic polarization electrochemical sensor |
description |
The goal of this study was to propose an electrochemical sensor for Paracetamol determination. To reach this objective, a graphite electrode (GE) was modified with iron oxides, and it was tested in an alkaline aqueous solution, in order to appreciate its electrocatalytic properties towards paraacetylaminophenol anodic oxidation. The graphite electrode modification was performed, in a first step, by potentiostatic deposition of an iron film at -1 V/SCE, in an aqueous solution of 0.04 M Fe (NO3)3 + 0.15 M KNO3, followed, in a second step, by cyclic voltammetry in an aqueous solution of 0.1 M sodium hydroxide, at 25 ºC. The modified electrode was characterized by means of scanning electron microscope coupled to an EDAX X-Ray micro-analyser. Paraacetylaminophenol determination by means of this novel sensor was instantaneous in an alkaline solution. The performance of this sensor was obtained in the concentration range from 13 ppm to 320 ppm, with a sensitivity of 1.6×10(4) µA mol-1 L. |
publishDate |
2019 |
dc.date.none.fl_str_mv |
2019-12-01 |
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://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000600005 |
url |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000600005 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
http://scielo.pt/scielo.php?script=sci_arttext&pid=S0872-19042019000600005 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Portuguesa de Electroquímica |
publisher.none.fl_str_mv |
Sociedade Portuguesa de Electroquímica |
dc.source.none.fl_str_mv |
Portugaliae Electrochimica Acta v.37 n.6 2019 reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
|
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1799137291953766400 |