Preparation and visible-light photocatalytic performance of tubular TiO2/layered ZnFe2O4 composites

被引：0
|
作者：
Wu K. [1 ]
Sun Q. [1 ,2 ]
Zhang J. [1 ]
Yan J. [2 ]
Pan F.-Z. [3 ]
Ma J.-K. [1 ]
Sheng J.-W. [1 ,2 ]
机构：
[1] School of Materials Science and Engineering, Zhejiang University of Technology, Hangzhou
[2] Wenzhou Institute of Science and Technology, Zhejiang University of Technology, Wenzhou
[3] Zhejiang Institute of Geology and Mineral Resource, Hangzhou
来源：
Sheng, Jia-Wei (jw-sheng@zjut.edu.cn) | 1600年 / Zhejiang University卷 / 34期
关键词：
Organic dye; Stability; TiO[!sub]2[!/sub]/ZnFe[!sub]2[!/sub]O[!sub]4[!/sub; Visible-light photocatalysis;
D O I：
10.3969/j.issn.1003-9015.2020.01.031
中图分类号：
学科分类号：
摘要：
Tubular TiO2/layered ZnFe2O4 composites were prepared via a two-step process, which included a solvothermal treatment followed by a co-precipitation process. The crystal structure, micromorphology and magnetic property of the prepared composites were characterized by X-ray diffraction (XRD), transmission electron microscope (TEM) and vibrating sample magnetometer (VSM). The photocatalytic performance of the samples was investigated by photo-degradation of RhB and MB. The results show that TiO2 has a mesoporous hollow tubular structure and ZnFe2O4 has a loose laminated structure. The tubular TiO2 was tightly embedded in the ZnFe2O4 structure to form a good carrier transport interface. Compared with TiO2, the TiO2/ZnFe2O4 composites had a larger specific surface area, and its photo-response range extended to visible region. The degradation rates of RhB and MB catalyzed by TiO2/ZnFe2O4 composites were 50% and 45% under visible light exposure for 210 min respectively, which were significantly higher than that of bare TiO2 (10% and 13%). Furthermore, the degradation rates exceed 95% under simulated solar light exposure for 210 min. In addition, the TiO2/ZnFe2O4 composites had stable photocatalytic activity and retain more than 90% degradation efficiency after repeated usage for 3 times. © 2020, Editorial Board of "Journal of Chemical Engineering of Chinese Universities". All right reserved.
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页码：247 / 254
页数：7
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