Fenton-like degradation of sulfathiazole using copper-modified MgFe-CO3 layered double hydroxide

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Autor(es): dc.contributorUniversidade Estadual Paulista (Unesp)-
Autor(es): dc.creatorde Melo Costa-Serge, Nayara [UNESP]-
Autor(es): dc.creatorGonçalves, Rosembergue Gabriel Lima [UNESP]-
Autor(es): dc.creatorRojas-Mantilla, Hernán Dario [UNESP]-
Autor(es): dc.creatorSantilli, Celso Valentim [UNESP]-
Autor(es): dc.creatorHammer, Peter [UNESP]-
Autor(es): dc.creatorNogueira, Raquel Fernandes Pupo [UNESP]-
Data de aceite: dc.date.accessioned2022-02-22T00:53:22Z-
Data de disponibilização: dc.date.available2022-02-22T00:53:22Z-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-06-25-
Data de envio: dc.date.issued2021-07-05-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.1016/j.jhazmat.2021.125388-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/208421-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/208421-
Descrição: dc.descriptionThe catalytic activity of layered double hydroxides, with and without insertion of copper, was evaluated in a heterogeneous Fenton process for degradation of the antibiotic sulfathiazole (STZ). The characterizations with different techniques revealed lamellar structures formed by stacking of layers containing magnesium, iron, and copper cations. The insertion of copper in the lamellar structure increased the specific area of the material and the degradation kinetics, achieving complete STZ removal after 90 min. X-ray photoelectron spectroscopy analysis showed the presence of Cu(II) and Cu(I) surface sites, which contributed to the generation of hydroxyl and hydroperoxyl/superoxide radicals. It also indicated an increase of Cu(I) content after use. For both materials, but specially for LDH without copper, addition of tert-butyl alcohol and p-benzoquinone hindered STZ degradation, indicating the importance of hydroxyl and hydroperoxyl/superoxide radicals in the degradation process, respectively. These results demonstrated the potential of copper-modified MgFe-CO3 as a catalyst for the degradation of emerging contaminants, offering the benefits of easy preparation and high efficiency in the Fenton process.-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry-
Descrição: dc.descriptionUNESP National Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT - DATREM) Institute of Chemistry-
Descrição: dc.descriptionSão Paulo State University (UNESP) Institute of Chemistry-
Descrição: dc.descriptionUNESP National Institute for Alternative Technologies of Detection Toxicological Evaluation and Removal of Micropollutants and Radioactives (INCT - DATREM) Institute of Chemistry-
Descrição: dc.descriptionFAPESP: #2018/12780-4-
Descrição: dc.descriptionFAPESP: #2018/17517-0-
Idioma: dc.languageen-
Relação: dc.relationJournal of Hazardous Materials-
???dc.source???: dc.sourceScopus-
Palavras-chave: dc.subjectCopper Fenton-
Palavras-chave: dc.subjectHydroperoxyl/superoxide radical-
Palavras-chave: dc.subjectHydroxyl radical-
Palavras-chave: dc.subjectPyroaurite-
Palavras-chave: dc.subjectVis-LED-
Título: dc.titleFenton-like degradation of sulfathiazole using copper-modified MgFe-CO3 layered double hydroxide-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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