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Synthesis of superparamagnetic Fe3O4-graphene oxide-based material for the photodegradation of clonazepam.
da Silva, Maryne Patrícia; de Souza, Ana Caroline Alves; Ferreira, Ágata Rodrigues Deodato; do Nascimento, Pedro Lucas Araújo; Fraga, Tiago José Marques; Cavalcanti, Jorge Vinícius Fernandes Lima; Ghislandi, Marcos Gomes; da Motta Sobrinho, Maurício Alves.
Afiliação
  • da Silva MP; Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, Recife, PE, 50670-901, Brazil. marynepsilva@gmail.com.
  • de Souza ACA; Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, Recife, PE, 50670-901, Brazil.
  • Ferreira ÁRD; Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, Recife, PE, 50670-901, Brazil.
  • do Nascimento PLA; Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, Recife, PE, 50670-901, Brazil.
  • Fraga TJM; Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, Recife, PE, 50670-901, Brazil.
  • Cavalcanti JVFL; Department of Food Science, Federal University of Pernambuco Agreste (UFAPE), Bom Pastor Avenue, W/N, Boa Vista, Garanhuns, PE, 55292-270, Brazil.
  • Ghislandi MG; Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, Recife, PE, 50670-901, Brazil.
  • da Motta Sobrinho MA; Department of Chemical Engineering, Federal University of Pernambuco (UFPE), 1235 Prof. Moraes Rego Av, Cidade Universitária, Recife, PE, 50670-901, Brazil.
Sci Rep ; 14(1): 18916, 2024 08 14.
Article em En | MEDLINE | ID: mdl-39143177
ABSTRACT
The global concern over water pollution caused by contaminants of emerging concern has been the subject of several studies due to the complexity of treatment. Here, the synthesis of a graphene oxide-based magnetic material (GO@Fe3O4) produced according to a modified Hummers' method followed by a hydrothermal reaction was proposed; then, its application as a photocatalyst in clonazepam photo-Fenton degradation was investigated. Several characterization analyses were performed to analyze the structure, functionalization and magnetic properties of the composite. A 23 factorial design was used for the optimization procedure to investigate the effect of [H2O2], GO@Fe3O4 dose and pH on clonazepam degradation. Adsorption experiments demonstrated that GO@Fe3O4 could not adsorb clonazepam. Photo-Fenton kinetics showed that total degradation of clonazepam was achieved within 5 min, and the experimental data were better fitted to the PFO model. A comparative study of clonazepam degradation by different processes highlighted that the heterogeneous photo-Fenton process was more efficient than homogeneous processes. The radical scavenging test showed that O 2 · - was the main active free radical in the degradation reaction, followed by hydroxyl radicals (•OH) and holes (h+) in the valence layer; accordingly, a mechanism of degradation was proposed to describe the process.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fotólise / Poluentes Químicos da Água / Clonazepam / Grafite Idioma: En Revista: Sci Rep Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido
Texto completo
Adicionar na Minha BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fotólise / Poluentes Químicos da Água / Clonazepam / Grafite Idioma: En Revista: Sci Rep Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Brasil País de publicação: Reino Unido