Investigation of the Synergistic Effect of Layer-by-Layer Films of Carbon Nanotubes and Polypyrrole on a Flexible Electrochemical Device for Paraquat Sensing

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Autor(es): dc.contributorUniversidade Federal de São Carlos (UFSCar)-
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidade de São Paulo (USP)-
Autor(es): dc.contributorUniversidade Estadual de Campinas (UNICAMP)-
Autor(es): dc.creatorAmaro, Stefanny F.-
Autor(es): dc.creatorMaciel, Cristiane C.-
Autor(es): dc.creatorRodrigues, Jéssica S.-
Autor(es): dc.creatorde Freitas, Amanda de S. M.-
Autor(es): dc.creatorFré, Lucas V. B. V.-
Autor(es): dc.creatorde Barros, Anerise-
Autor(es): dc.creatorFerreira, Marystela-
Data de aceite: dc.date.accessioned2025-08-21T23:07:24Z-
Data de disponibilização: dc.date.available2025-08-21T23:07:24Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-08-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3390/chemosensors11080420-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/301109-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/301109-
Descrição: dc.descriptionThis research aims to study flexible sensors based on a poly(butylene adipate-co-terephthalate) (PBAT) biodegradable polymer and graphite. Sensors were modified through the layer-by-layer (LbL) technique to improve their electrochemical behavior for paraquat (PQ) detection. Nanostructured films were obtained by alternating layers of anionic and cationic materials, carbon nanotubes (CNTs), and polypyrrole (PPY), respectively. The devices, with and without modification, were characterized by contact angle, scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). Electrochemical characterization was labeled via cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). PQ molecules were detected using the differential pulse voltammetry (DPV) technique in a concentration range of 0.1 to 2.1 µM. The sensor detection limit (LOD) was obtained using the analytical curve, with it being equal to 0.073 µM. The LbL film gPBAT(PPY/CNT)n sensor showed good stability, reproducibility, and repeatability, with recovery values ranging from 99.4% to 109.3% for PQ when the analyzed samples were contaminated with tap water. The produced electrodes have the advantage of being flexible, disposable, reproducible, and of low manufacturing cost, which makes them attractive for portable environmental analysis.-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionCenter of Science and Technology for Sustainability (CCTS) Federal University of São Carlos (UFSCar), SP-
Descrição: dc.descriptionPostgraduate Program in Materials Science and Technology—POSMAT São Paulo State University Júlio de Mesquita Filho (UNESP), SP-
Descrição: dc.descriptionInstitute of Science and Technology (ICT) Federal University of São Paulo (UNIFESP), SP-
Descrição: dc.descriptionDepartment of Inorganic Chemistry Institute of Chemistry State University of Campinas (UNICAMP), SP-
Descrição: dc.descriptionPostgraduate Program in Materials Science and Technology—POSMAT São Paulo State University Júlio de Mesquita Filho (UNESP), SP-
Descrição: dc.descriptionCAPES: 88882.430936/2019-01-
Descrição: dc.descriptionCAPES: 88887.497915/2020-00-
Descrição: dc.descriptionCAPES: 88887.803614/2023-00-
Idioma: dc.languageen-
Relação: dc.relationChemosensors-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectcarbon nanotubes-
Palavras-chave: dc.subjectgraphite-
Palavras-chave: dc.subjectlayer-by-layer film-
Palavras-chave: dc.subjectPBAT-
Palavras-chave: dc.subjectpolypyrrole-
Palavras-chave: dc.subjectsensor-
Título: dc.titleInvestigation of the Synergistic Effect of Layer-by-Layer Films of Carbon Nanotubes and Polypyrrole on a Flexible Electrochemical Device for Paraquat Sensing-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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