Systematic study on the synthesis of novel ion-imprinted polymers based on rhodizonate for the highly selective removal of Pb(II)

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MetadadosDescriçãoIdioma
Autor(es): dc.contributorNational University of Engineering-
Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.contributorToxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)-
Autor(es): dc.creatorde Liss Meza López, Flor-
Autor(es): dc.creatorKhan, Sabir [UNESP]-
Autor(es): dc.creatorda Silva, Matheus Augusto [UNESP]-
Autor(es): dc.creatorAnchieta Gomes Neto, José [UNESP]-
Autor(es): dc.creatorPicasso, Gino-
Autor(es): dc.creatorSotomayor, Maria Del Pilar Taboada [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:51:46Z-
Data de disponibilização: dc.date.available2022-02-22T00:51:46Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-01-31-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.reactfunctpolym.2020.104805-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/207907-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/207907-
Descrição: dc.descriptionThe present work reports the successful synthesis of a novel Pb2+ ion-imprinted polymer (Pb-IIP) based on a rhodizonate-like selective ligand by precipitation. Three functional monomers, namely acid acrylic (ACRY), 2-acrylamido-2-methylpropane sulfonic acid (AMPSA) and allylamine (ALLY), were chosen by computer simulation using density functional theory (DFT). The materials obtained were applied for the selective removal of Pb2+ from aqueous solutions and were characterized by Fourier transform Infra-red (FTIR), scanning electronic microscopy (SEM) and flame atomic absorption spectrometry (FAAS). The results obtained from the adsorption experiments performed under optimal conditions were in good agreement with the computational design and showed that IIP-AMPSA exhibited a relatively higher adsorption capacity for Pb2+ (51.84 mg g−1) than IIP–ACRY (31.02 mg g−1) and IIP-ALLY (12.90 mg g−1). Kinetics studies showed that the adsorption process followed a pseudo second-order reaction rate, and equilibrium was reached after 10 min of reaction. The Temkin isotherm model was found to be the most appropriate for fitting the experimental data, indicating that the adsorption process occurred in the active centers with heterogeneous surface. Based on the application of IIP-AMPSA, the relative selectivity coefficients obtained for Pb2+ in the presence of Cu2+, Ni2+, Cd2+, Zn2+, Co2+, and Fe2+ were in the range of 89–128. The practical application of IIP-AMPSA showed that the recovery rate of Pb2+ from river samples was almost 100%; this can be attributed to the imprinted cavities and specific binding sites that were created, which, positioned in a predetermined orientation, formed a well-defined coordination geometry through the rhodizonate ligand.-
Descrição: dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionLaboratory of Physical Chemistry Research Faculty of Sciences National University of Engineering, Av. Tupac Amaru 210-
Descrição: dc.descriptionInstitute of Chemistry State University of São Paulo (UNESP)-
Descrição: dc.descriptionNational Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT-DATREM)-
Descrição: dc.descriptionInstitute of Chemistry State University of São Paulo (UNESP)-
Descrição: dc.descriptionCNPq: # 301728/2019-4-
Descrição: dc.descriptionCNPq: # 408050/2018-7-
Descrição: dc.descriptionFAPESP: #2014/50945-4-
Descrição: dc.descriptionFAPESP: #2019/00677-7-
Descrição: dc.descriptionCNPq: #465571/2014-0-
Idioma: dc.languageen-
Relação: dc.relationReactive and Functional Polymers-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectDFT-
Palavras-chave: dc.subjectIon-imprinted polymer-
Palavras-chave: dc.subjectPb2+-
Palavras-chave: dc.subjectRhodizonate complex-
Palavras-chave: dc.subjectSelective adsorption-
Título: dc.titleSystematic study on the synthesis of novel ion-imprinted polymers based on rhodizonate for the highly selective removal of Pb(II)-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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