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Preparation and Visible-Light-Driven Photocatalytic Performance of Magnetic SrFe12O19/BiVO4

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Abstract

SrFe12O19/BiVO4 was synthesized by chemical coprecipitation method using tartaric acid as complexant. X-ray diffraction investigation revealed that the introduction of SrFe12O19 did not change the crystal orientation of monoclinic architecture BiVO4. Micro-morphology study indicated that BiVO4 molecules uniformly distributed on the surface of hexagonal SrFe12O19 particles. Vibrating sample magnetometer measurement manifested that 15%SrFe12O19/BiVO4 possessed better magnetic property, which was conducive to its separation and reuse. Ultraviolet-visible diffuse reflectance spectrophotometer detection showed the strong absorption of the composite in visible light. Photocatalytic performances of as-prepared composites were investigated with the degradation of methylene blue (MB) under visible light irradiation. The maximum degradation ratio of MB with 15%SrFe12O19/BiVO4 was 93% at 5 h, and the recovery ratio of the magnetic catalyst was above 90% in each cycle. It was confirmed that the photodegradation process of MB was first-order reaction, and the dominant active species were O .2 radicals and holes.

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Acknowledgments

The authors were grateful for the support from National Natural Science Foundation of China (No. 51374259), Graduate Innovation Program of Chongqing (NO. CYB14040) and Scientific Research Foundation of State Key Lab. of Coal Mine Disaster Dynamics and Control, PR China (No.2011DA105287-MS201206).The authors also would like to thank the Fundamental and advanced research projects of Chongqing Science and Technology Commission, PR China (No.2013jjB20001) and the Scientific &Technologic Program for the Bureau of Land Resources and Housing Management of Chongqing, PR China (No.CQGT-KJ-2014012).

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Chenglun, L., Hui, L., Heping, Y. et al. Preparation and Visible-Light-Driven Photocatalytic Performance of Magnetic SrFe12O19/BiVO4 . J. of Materi Eng and Perform 24, 771–777 (2015). https://doi.org/10.1007/s11665-014-1362-4

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  • DOI: https://doi.org/10.1007/s11665-014-1362-4

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