Heterogeneous Fenton reactants: a study of the behavior of iron oxide nanoparticles obtained by the polymeric precursor method
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Data
2009-11-01
Autores
Giraldi, Tania R. [UNESP]
Arruda, Cezar C.
da Costa, Geraldo M.
Longo, Elson [UNESP]
Ribeiro, Caue
Título da Revista
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Título de Volume
Editor
Springer
Resumo
Nanoparticles composed of iron oxides and iron salts were obtained from polymeric resins produced by polymerizing Fe(2+)-citrate and Fe(3+)-citrate complexes with ethylene glycol. The citric acid:Fe molar ratio was varied to obtain different synthesis conditions. The materials were treated at 450 degrees C for 2 h to obtain nanoparticles, which were characterized by XRD, Mossbauer spectroscopy, FEG, CHNS, atomic absorption and surface area through N(2) physisorption. Rhodamine B photo degradation in the presence of these nanoparticles and hydrogen peroxide was carried out to analyze the possible behavior of nanoparticles as heterogeneous Fenton reactants. UV-visible spectroscopy revealed that the catalytic activity in the presence of nanoparticles obtained with a citric acid:Fe molar ratio of 12:1 was the condition that provided the best results in this work.
Descrição
Palavras-chave
Photodegradation, Dye, Water treatment, Ferrites, Polymeric precursors
Como citar
Journal of Sol-gel Science and Technology. Dordrecht: Springer, v. 52, n. 2, p. 299-303, 2009.