Investigating layer-by-layer films of carbon nanotubes and nickel phthalocyanine towards diquat detection

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorZattim, Cristiano A.-
Autor(es): dc.creatorKavazoi, Henry S.-
Autor(es): dc.creatorMiyazaki, Celina M.-
Autor(es): dc.creatorAlessio, Priscila-
Data de aceite: dc.date.accessioned2025-08-21T22:51:27Z-
Data de disponibilização: dc.date.available2025-08-21T22:51:27Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2024-11-30-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1038/s41598-024-67601-w-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/302788-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/302788-
Descrição: dc.descriptionThe indiscriminate use of pesticides makes us susceptible to the toxicity of these chemical compounds, which may be present in high quantities in our food. It is crucial to develop inexpensive and rapid methods for determining these pesticides for government control or even for the general population. In this study, we investigated the fabrication of self-assembled LbL films using multi-walled carbon nanotubes (MWCNT) and nickel tetrasulphonated phthalocyanine (NiTsPc) as an electrochemical sensor for the herbicide Diquat (DQ). The Layer-by-Layer (LbL) assembly of the (MWCNT/NiTsPc) film was examined, along with its structural and morphological characteristics. The effect of the number of layers in DQ detection was evaluated by cyclic voltammetry, followed by the detection through differential pulse voltammetry. The achieved limit of detection was 9.62 × 10−7 mol L−1. A ~ 30% decrease in sensitivity was observed in the presence of Paraquat, a banned herbicide and electrochemical interferent due to the structural similarities, which is regularly neglected in the most published studies. The sensor was tested in real samples, demonstrating a recovery of 98.5% in organic apples.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionDepartment of Physics School of Technology and Sciences São Paulo State University (UNESP), 305 Roberto Simonsen St-Jardim das Rosas, SP-
Descrição: dc.descriptionDepartment of Physics School of Technology and Sciences São Paulo State University (UNESP), 305 Roberto Simonsen St-Jardim das Rosas, SP-
Descrição: dc.descriptionFAPESP: 2018/22214-6-
Descrição: dc.descriptionFAPESP: 2023/04196-9-
Descrição: dc.descriptionFAPESP: 2023/12756-4-
Descrição: dc.descriptionCAPES: 23038.000776/201754-
Descrição: dc.descriptionCNPq: 316535/2021-4-
Idioma: dc.languageen-
Relação: dc.relationScientific Reports-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCarbon nanotubes-
Palavras-chave: dc.subjectDiquat-
Palavras-chave: dc.subjectElectrochemical sensor-
Palavras-chave: dc.subjectMultilayered materials-
Palavras-chave: dc.subjectNickel phthalocyanine-
Título: dc.titleInvestigating layer-by-layer films of carbon nanotubes and nickel phthalocyanine towards diquat detection-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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