Abstract
The magnetic photocatalyst BiOCl/Mn x Zn1−x Fe2O4 was prepared by impregnation-calcination method. The structure and properties of the prepared photocatalyst were characterized by FTIR, XRD, SEM, TEM, UV–vis DRS, and VSM. Mn x Zn1−x Fe2O4 inhibited the growth along (001) crystal face and promoted (110) crystal surface exposure of BiOCl. The as-prepared magnetic composite appeared flower-like microspheres assembled with nanosheets. The average crystallite size and the nanosheet thickness range of BiOCl/Mn x Zn1−x Fe2O4 were 57.6 and 75.7–112.2 nm, respectively. The band gap energy (E g) of BiOCl/Mn x Zn1−x Fe2O4 was 2.48 eV, which was lower than that of BiOCl. The saturation magnetization (Ms), coercive force (Hc), and remanent magnetization (Mr) of BiOCl/Mn x Zn1−x Fe2O4 were respectively 4.64 emu g−1, 50.12 G and 0.09 emu g−1, indicating a good resistance to demagnetization and paramagnetism. The optimum synthesis condition of BiOCl/Mn x Zn1−x Fe2O4 was obtained by orthogonal experiments, and the degradation ratio of RhB with the photocatalyst was 99.6% at 30 min. After four cycles, the degradation ratio of RhB with the recovered photocatalyst was still above 83%.
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This study was funded by the National Natural Science Foundation of China (grant no. 51374259) and Chongqing Basic Science and Advanced Technology Research Program (no. CSTC2015jcyjBX0015).
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Feng, S., Xu, L., Liu, C. et al. Preparation and property of magnetic photocatalyst BiOCl/Mn x Zn1−x Fe2O4 . J Nanopart Res 19, 33 (2017). https://doi.org/10.1007/s11051-016-3730-5
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DOI: https://doi.org/10.1007/s11051-016-3730-5