Comparative study of tetrasulfonated phthalocyanine modified screen-printed electrodes in paraquat

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dc.contributor.authorKavazoi, Henry S. [UNESP]
dc.contributor.authorMartin, Cibely S. [UNESP]
dc.contributor.authorAlessio, Priscila [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.date.accessioned2022-04-28T19:47:54Z
dc.date.available2022-04-28T19:47:54Z
dc.date.issued2022-03-01
dc.description.abstractEmerging pollutants, including pesticides, have been an increasing problem to human and environmental health. Based on this, the development and optimization of sensors is an essential approach to controlling emerging pollutants. Here, screen-printed carbon electrodes (SPCE) modified with three MTsPc (FeTsPc, CuTsPc, or NiTsPc) were evaluated for voltammetric detection of paraquat (PQ). UV-Vis absorption and Raman spectroscopy coupled with optical microscopy were used to prove the metal center directly influences the aggregation of MTsPc on the electrode surfaces, which promotes variation on the redox couple of PQ. The adsorption of PQ2+ species was proportional to aggregation of MTsPc following the order FeTsPc > NiTsPc > CuTsPc. The FeTsPc/SPCE showed a better voltammetry response for PQ detection in both ultrapure and river water, being applied in sensing measurements. The differential pulse voltammetry analysis showed a linear range of 6.0–60 µmol/L with a limit of detection of 0.97 µmol/L in the standard sample and recovery of 103.3% in the river sample. The results indicate an excellent pertinence of sensing applications and the possibility of developing cheap devices.en
dc.description.affiliationSchool of Technology and Applied Sciences São Paulo State University (UNESP)
dc.description.affiliationUnespSchool of Technology and Applied Sciences São Paulo State University (UNESP)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.description.sponsorshipIdFAPESP: 2014/50869-6
dc.description.sponsorshipIdFAPESP: 2017/06534-8
dc.description.sponsorshipIdFAPESP: 2017/15019-0
dc.description.sponsorshipIdFAPESP: 2018/22214-6
dc.description.sponsorshipIdCAPES: 23038.000776/201754
dc.description.sponsorshipIdCNPq: 304836/2018-4
dc.description.sponsorshipIdCNPq: 422163/2018-0
dc.description.sponsorshipIdCNPq: 465572/2014-6
dc.identifierhttp://dx.doi.org/10.1016/j.synthmet.2021.116988
dc.identifier.citationSynthetic Metals, v. 284.
dc.identifier.doi10.1016/j.synthmet.2021.116988
dc.identifier.issn0379-6779
dc.identifier.scopus2-s2.0-85120673829
dc.identifier.urihttp://hdl.handle.net/11449/222990
dc.language.isoeng
dc.relation.ispartofSynthetic Metals
dc.sourceScopus
dc.subjectElectrochemical sensor
dc.subjectPesticide
dc.subjectRiver water
dc.subjectSurface modification
dc.titleComparative study of tetrasulfonated phthalocyanine modified screen-printed electrodes in paraquaten
dc.typeArtigo

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