Synthesis of Nb2O5/C for H2O2 electrogeneration and its application for the degradation of levofloxacin
Carregando...
Arquivos
Fontes externas
Fontes externas
Data
Orientador
Coorientador
Pós-graduação
Curso de graduação
Título da Revista
ISSN da Revista
Título de Volume
Editor
Tipo
Artigo
Direito de acesso
Arquivos
Fontes externas
Fontes externas
Resumo
The present work sought to investigate H2O2 generation using a gas diffusion electrode (GDE) composed of carbon with niobium oxide for levofloxacin (LEVO) degradation. Results showed that the oxide formed was Nb2O5 (crystallographic structure was confirmed by XRD; chemical composition detected by XPS), and the increase in the Nb/C ratio led to more crystalline structure and higher crystallite size. The carbon with 5% Nb2O5 presented an average particle size of 5.6 nm, and this material led to the generation of the highest amount of H2O2 (317.6 mg L−1). The C/5% Nb2O5-modified GDE was applied for the degradation of LEVO in an acid medium in the presence and absence of Fe2+ ions. Long-term experiments conducted to analyze the time required for the total removal of LEVO showed that 96% of LEVO and 66% of organic load were removed in 270 min of treatment at the current density of 100 mA cm−2. Graphical abstract: (Figure presented.)
Descrição
Palavras-chave
Advanced oxidation process, Antibiotic degradation, Gas diffusion electrode, Hydrogen peroxide, Levofloxacin
Idioma
Inglês
Citação
Journal of Applied Electrochemistry, v. 54, n. 3, p. 581-595, 2024.
