Improved ciprofloxacin removal by a Fe(VI)-Fe3O4/graphene system under visible light irradiation.
Water Sci Technol
; 2017(2): 527-533, 2018 May.
Article
em En
| MEDLINE
| ID: mdl-29851405
ABSTRACT
In this paper, Fe3O4/graphene (Fe3O4/GE) nanocomposites were prepared by a co-precipitation method and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and UV-vis diffuse reflectance spectra (UV-vis DRS). The composites were used in combination with Fe(VI) to construct a Fe(VI)-Fe3O4/GE system in order to degrade ciprofloxacin (CIP) in simulated water samples. The photocatalytic properties of Fe(VI)-Fe3O4/GE were evaluated under visible light irradiation. The concentration of CIP in solution was detected by high performance liquid chromatography (HPLC). A series of results showed that Fe(VI), as a good electron capture agent, could significantly improve the treatment performance. Major determining factors during CIP degradation were also investigated, in which solution pH of 9, Fe(VI) to Fe3O4/GE dosage ratio of 125 and GE content in the Fe3O4/GE nanocomposites of 10 wt% were found to be the best experimental conditions. The results demonstrated that the Fe(VI)-Fe3O4/GE system could offer an alternative process in water treatment in addition to the current Fe(VI)-UV/TiO2 process.
Texto completo:
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Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
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Ciprofloxacina
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Eliminação de Resíduos Líquidos
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Compostos de Ferro
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Grafite
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Luz
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article