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Materials 2014, 7(5), 4034-4044; doi:10.3390/ma7054034
Article

Visible-Light Active and Magnetically Recyclable Nanocomposites for the Degradation of Organic Dye

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1 Anhui Province Key Laboratory of Environment-friendly Polymer Materials, School of Chemistry and Chemical Engineering, Anhui University, Hefei 230601, Anhui, China 2 CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, Anhui, China 3 School of Chemistry and Chemical Engineering, Xuchang University, Xuchang 461000, Henan, China
* Authors to whom correspondence should be addressed.
Received: 2 April 2014 / Revised: 7 May 2014 / Accepted: 13 May 2014 / Published: 21 May 2014
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Abstract

Recyclable visible-light photocatalyst Fe3O4@TiO2 with core-shell structure was prepared by a simple synthetic strategy using solvothermal crystallization of titanium precursor on preformed Fe3O4 nanopartiles. The photo-degradation reaction of neutral red aqueous solution was tested to evaluate the visible-light photocatalytic activity of the as prepared Fe3O4@TiO2 nanoparticles, which show excellent photocatalytic activity compared with commercial P25 catalyst. Moreover, the Fe3O4@TiO2 nanocomposites can be easily separated from the reaction mixture, and maintain favorable photocatalytic activity after five cycles. The high visible light absorption of the Fe3O4@TiO2 nanocomposites may originate from the absence of electronic heterojunction, excellently dispersity and the high specific surface area of the as-synthesized Fe3O4@TiO2 samples.
Keywords: magnetic photocatalysts; synthesis; TiO2; visible-light irradiation magnetic photocatalysts; synthesis; TiO2; visible-light irradiation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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Niu, H.; Wang, Q.; Liang, H.; Chen, M.; Mao, C.; Song, J.; Zhang, S.; Gao, Y.; Chen, C. Visible-Light Active and Magnetically Recyclable Nanocomposites for the Degradation of Organic Dye. Materials 2014, 7, 4034-4044.

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