Cyclodextrin–silica hybrid materials: synthesis, characterization, and application in pesticide aqueous removal

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Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.contributorUniversidad Nacional de Mar del Plata (UNMdP)-
Autor(es): dc.contributorUniversidade Federal de Lavras (UFLA)-
Autor(es): dc.creatorBaigorria, Estefanía-
Autor(es): dc.creatorCarvalho, Lucas Bragança-
Autor(es): dc.creatorAlves Pinto, Luciana Matos-
Autor(es): dc.creatorFraceto, Leonardo Fernandes-
Data de aceite: dc.date.accessioned2025-08-21T19:48:16Z-
Data de disponibilização: dc.date.available2025-08-21T19:48:16Z-
Data de envio: dc.date.issued2025-04-29-
Data de envio: dc.date.issued2023-12-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.3389/fchem.2024.1450089-
Fonte completa do material: dc.identifierhttps://hdl.handle.net/11449/308203-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/308203-
Descrição: dc.descriptionIntroduction: Overusing and misusing pesticides, including paraquat (PQ), have led to numerous environmental contamination complications. PQ is an emerging bio-accumulative contaminant that is present in environmental aqueous matrices. Adsorption techniques are part of a set of technologies applied in ecological remediation, known for their high effectiveness in removing aqueous PQ. A study of the PQ adsorption capacity of three cyclodextrin–silica nanocomposites (α-CDSi, β-CDSi, and γ-CDSi) from contaminated waters is presented in this paper. Methods: The cyclodextrin–silica nanocomposites were synthesized via an esterification reaction between the inorganic matrix and cyclodextrins (CDs) (α, β, and γ) and were characterized physicochemically by spectroscopic, thermal, and surface methods. Their PQ removal performance from contaminated aqueous media was studied under different experimental conditions. Results and Discussion: The results showed a fast adsorptive response in removal treatment studies over time. Adsorption capacities of 87.22, 57.17, and 77.27 mg.g−1 were found for α-CDSi, β-CDSi, and γ-CDSi, respectively, at only 30 min of treatment. Thermodynamic studies indicated spontaneous and exothermic adsorption processes. The removal assays responded mainly to physisorption mechanisms with contributions from chemisorption mechanisms. Spectroscopic assays showed a strong interaction of PQ with the adsorbents used. Innovative CDSi nanocomposites have proven to be highly efficient in applying aqueous PQ remediation, thus proving to be sustainable adsorbents of contaminants of emerging importance worldwide.-
Descrição: dc.descriptionMinistério da Ciência, Tecnologia e Inovação-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)-
Descrição: dc.descriptionInstitute of Science and Technology São Paulo State University-
Descrição: dc.descriptionMateriales Compuestos Termoplásticos (CoMP) Instituto de Investigaciones en Ciencia y Tecnología de Materiales (INTEMA) Consejo Nacional de Investigaciones Científicas y Técnicas Universidad Nacional de Mar del Plata (UNMdP)-
Descrição: dc.descriptionChemistry Department Natural Sciences Institute Universidade Federal de Lavras-
Descrição: dc.descriptionInstitute of Science and Technology São Paulo State University-
Descrição: dc.descriptionFAPESP: 2021/10639-5 2017/21004-5 2018/23608-8-
Descrição: dc.descriptionCNPq: 405924/2022-4 308439/2021-0-
Descrição: dc.descriptionCAPES: 88887.572861/2020-00 88887.953443/2024-00-
Descrição: dc.descriptionFAPEMIG: CBB-BDS-00284-15-
Idioma: dc.languageen-
Relação: dc.relationFrontiers in Chemistry-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectadsorption-
Palavras-chave: dc.subjectenvironmental remediation-
Palavras-chave: dc.subjectnanocomposites-
Palavras-chave: dc.subjectpesticides-
Palavras-chave: dc.subjectwater remediation-
Título: dc.titleCyclodextrin–silica hybrid materials: synthesis, characterization, and application in pesticide aqueous removal-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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