Enhanced Photo-Fenton Activity of SnO2/-Fe2O3 Composites Prepared by a Two-Step Solvothermal Method

doi:10.3390/ma15051743

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	Enhanced Photo-Fenton Activity of SnO2/-Fe2O3 Composites Prepared by a Two-Step Solvothermal Method
	P. Li; X. Zhuang; J. Xu; L. Ruan; Y. Jiang; J. Lin and X. Zhang
刊名	Materials
	2022
卷号	15 期号:5
ISSN号	19961944
DOI	10.3390/ma15051743
英文摘要	The x-SnO2/-Fe2O3 (x = 0.04, 0.07, and 0.1) heterogeneous composites were successfully prepared via a two-step solvothermal method. These composites were systematically characterized by the X-ray diffraction technique, field emission scanning electron microscopy, an energy disper-sive spectrometer, X-ray photoelectron spectroscopy and a UVvisible spectrometer. It was found that SnO2 nanoparticles were uniformly decorated on the surface of -Fe2O3 particles in these heterogeneous composites. A comparative study of methylene blue (MB) photodegradation by -Fe2O3 and x-SnO2/-Fe2O3 composites was carried out. All x-SnO2/-Fe2O3 composites showed higher MB photodegradation efficiency than -Fe2O3. When x = 0.07, the MB photodegradation efficiency can reach 97% in 60 min. Meanwhile, the first-order kinetic studies demonstrated that the optimal rate constant of 0.07-SnO2/-Fe2O3 composite was 0.0537 min1, while that of pure -Fe2O3 was only 0.0191 min1. The catalytic mechanism of MB photodegradation by SnO2/-Fe2O3 was examined. The SnO2 can act as a sink and help the effective transfer of photo-generated electrons for decom-posing hydrogen peroxide (H2O2) into active radicals. This work can provide a new insight into the catalytic mechanism of the photo-Fenton process. 2022 by the authors. Licensee MDPI, Basel, Switzerland.
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内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/66622]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	P. Li,X. Zhuang,J. Xu,et al. Enhanced Photo-Fenton Activity of SnO2/-Fe2O3 Composites Prepared by a Two-Step Solvothermal Method[J]. Materials,2022,15(5).
APA	P. Li,X. Zhuang,J. Xu,L. Ruan,Y. Jiang,&J. Lin and X. Zhang.(2022).Enhanced Photo-Fenton Activity of SnO2/-Fe2O3 Composites Prepared by a Two-Step Solvothermal Method.Materials,15(5).
MLA	P. Li,et al."Enhanced Photo-Fenton Activity of SnO2/-Fe2O3 Composites Prepared by a Two-Step Solvothermal Method".Materials 15.5(2022).