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Room Temperature Synthesis and Photocatalytic Activity of Magnetically Recoverable Fe3O4/BiOCl Nanocomposite Photocatalysts

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Abstract

Magnetically recoverable Fe3O4/BiOCl nanocomposite photocatalysts were fabricated by a simple chemical coprecipitation method at room temperature. The amount of Fe3O4 incorporated into BiOCl was varied from 0 to 20 wt%. The as-synthesized samples were characterized by X-ray diffraction, transmission electron microscopy, energy dispersive spectroscopy, UV–Vis diffuse reflectance spectroscopy, and vibrating sample magnetometer. The obtained results show that the as-synthesized samples mainly contain both crystalline phases (Fe3O4 and BiOCl) and are composed of flower-like nanostructures. Compared to UV light-responsive BiOCl, all the nanocomposite photocatalysts show a strong light absorbance in the range of 250–800 nm, demonstrating that the Fe3O4/BiOCl nanocomposites can respond to visible as well as UV light. Moreover, visible light absorbance was increased with the increase in the Fe3O4 amount in the composite. The photocatalytic activity of nanocomposite photocatalysts was evaluated by the photodegradation of Rhodamine B (RhB) over the samples under visible light irradiation. The 10 wt% Fe3O4/BiOCl nanocomposite photocatalyst shows the highest photocatalytic efficiency among the samples. The Fe3O4/BiOCl nanocomposite photocatalyst was stable under visible light irradiation to efficiently degrade RhB molecules after five cycles and could be easily recovered with a magnet after each cycle.

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Acknowledgments

This study was supported by the National Natural Science Foundation of China (Program Nos. 51102160 and 51272148), the Fundamental Research Funds for the Central Universities (Program No. GK201102027) and the State Ministry of-Education College Students’Innovative Projects (Program No. 201210781002).

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Authors and Affiliations

  1. School of Physics and Information Technology, Shaanxi Normal University, Xi’an, 710062, People’s Republic of China

    Congwei Tan, Gangqiang Zhu, Cai Xu, Jia Liang & Pengfeng Luo

  2. Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta, Midori, Yokohama, Kanagawa, 226-8503, Japan

    Mirabbos Hojamberdiev

  3. School of Material Science and Engineering, Shaanxi University of Science and Technology, Xi’an, 710068, People’s Republic of China

    Yun Liu

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  1. Congwei Tan
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  2. Gangqiang Zhu
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Correspondence to Gangqiang Zhu.

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Tan, C., Zhu, G., Hojamberdiev, M. et al. Room Temperature Synthesis and Photocatalytic Activity of Magnetically Recoverable Fe3O4/BiOCl Nanocomposite Photocatalysts. J Clust Sci 24, 1115–1126 (2013). https://doi.org/10.1007/s10876-013-0602-3

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  • DOI: https://doi.org/10.1007/s10876-013-0602-3

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