Journal
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Volume 478, Issue -, Pages 71-80Publisher
ELSEVIER
DOI: 10.1016/j.colsurfa.2015.03.035
Keywords
CoFe2O4; g-C3N4; Photocatalyst; Magnetic; Visible light
Categories
Funding
- National Natural Science Foundation of China for Youths [21407065, 21406094]
- Natural Science Foundation of Jiangsu Province for Youths [BK20140533]
- China Postdoctoral Science Foundation [2014M551520, 2014M560399]
- Jiangsu province Science Foundation [1401143C]
- Jiangsu University Scientific Research Funding [14JDG052]
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A magnetic photocatalytic CoFe2O4/g-C3N4 composite was successfully synthesized by a simple calcination method. Powder X-ray diffraction (XRD), transmission electron microscopy (TEM), infrared (IR) spectra, UV-Vis diffuse reflection spectroscopy (DRS) and X-ray photoelectron spectroscopy (XPS) were applied to characterize the as-prepared samples. The magnetic properties of CoFe2O4 and COFe2O4/gC(3)N(4) composites were measured by using a vibrating sample magnetometer (VSM) at room temperature. Photocatalytic property of the CoFe2O4/g-C3N4 composite was assessed by degrading methylene blue (MB) in aqueous medium under visible light irradiation. The results showed that the composite of 41.4% CoFe2O4/g-C3N4 exhibited the highest photocatalytic activity. It could activate H2O2 to degrade MB up to 97.3% in 3 h under the visible light irradiation. This enhancement could be attributed to the synergistic effect between CoFe2O4 and g-C3N4, which could enhance their activity of activating H2O2 to degrade MB under visible light. The CoFe2O4/g-C3N4 composites also have a strong magnetic ability. After the photocatalytic reaction, it can be quickly separated from the water by an extra magnetic field. Moreover, a possible photocatalytic mechanism was proposed. (C) 2015 Elsevier B.V. All rights reserved.
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