Development of modified electrodes based on self assembled films of polypirrole and carbon nanotubes composites for pesticides monitoring

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dc.contributor.authorAraujo, Gabriela Martins de [UNIFESP]
dc.contributor.authorPolacci, Luis Antonio [UNIFESP]
dc.contributor.authorMazzo, Tatiana Martelli [UNIFESP]
dc.contributor.authorCodognoto, Lucia [UNIFESP]
dc.contributor.authorSimões, Fabio Ruiz [UNIFESP]
dc.date.accessioned2019-01-21T10:29:24Z
dc.date.available2019-01-21T10:29:24Z
dc.date.issued2016
dc.description.abstractIn this work polypyrrole (PPy) and its respective composite with functionalized multiwalled carbon nanotubes (PPy-MWCNT) was obtained by the chemical polymerization of the monomer pyrrole (PPy) in aqueous solution by the dropwise addition of a solution of ammonium persulfate (PSA). The obtained PPy as well as its composite (PPy-MWCNT) were used to prepare two self-assembled films (SA) by the immersion of ITO blades (Inidium Tin Oxide) into PPy and PPy-MWCNT dispersions with alternated immersions into Polystyrene sulfonate (PSS) dispersion, thus resulting in a bilayer. The SA films were produced with ten bilayers (alternated layers of PPy or its composite). The obtained films were characterized by Fourrier Transformed Infrared Spectroscopy (FTIR), UV-Visible analysis, voltammetric analyses (square wave and cyclic voltammetry) and Scanning Electron Microscopy (SEM). The SA films were evaluated to determine the chlorothalonil pesticide which is commonly used as anti-fouling agent in marine environments. The SWV results showed a reduction peak at around -0.8 to 1.2 V (according to pH). It was also observed a synergic effect of the composite film (PPy-MWCNT/PSS) to determine the chlorothalonil by increase of the peak currents.en
dc.description.affiliationDepartamento de Ciências do Mar, Universidade Federal de São Paulo, Av. Almirante Saldanha da Gama, 89. CEP 11030-400, Santos – SP, Brazil
dc.description.affiliationDepartamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Rua Prof. Arthur Riedel, 275, CEP 09972-270, Diadema – SP, Brazil
dc.description.affiliationUnifespDepartamento de Ciências do Mar, Universidade Federal de São Paulo, Av. Almirante Saldanha da Gama, 89. CEP 11030-400, Santos – SP, Brazil
dc.description.affiliationUnifespDepartamento de Ciências Exatas e da Terra, Universidade Federal de São Paulo, Rua Prof. Arthur Riedel, 275, CEP 09972-270, Diadema – SP, Brazil
dc.description.sourceWeb of Science
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)pt
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)pt
dc.description.sponsorshipIDFAPESP: 2014/23858-3
dc.format.extent1561-1569
dc.identifierhttps://doi.org/10.1557/adv.2016.308
dc.identifier.citationMrs Advances. New york, v. 1, n. 21, p. 1561-1569, 2016.
dc.identifier.doi10.1557/adv.2016.308
dc.identifier.issn2059-8521
dc.identifier.urihttps://repositorio.unifesp.br/handle/11600/49206
dc.identifier.wosWOS:000412536900009
dc.language.isoeng
dc.publisherUniv Estadual Campinas, Inst Estudos Linguagem
dc.relation.ispartofMrs Advances
dc.rightsinfo:eu-repo/semantics/restrictedAccess
dc.subjectPolypyrroleen
dc.subjectPolyanilineen
dc.subjectEnvironmenten
dc.subjectSensorsen
dc.subjectSamplesen
dc.titleDevelopment of modified electrodes based on self assembled films of polypirrole and carbon nanotubes composites for pesticides monitoringen
dc.typeinfo:eu-repo/semantics/article
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