Optimized design of three-dimensional multi-shell Fe3O4/SiO2/ZnO/ZnSe microspheres with type II heterostructure for photocatalytic applications

doi:10.1016/j.apcatb.2018.01.002

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	Optimized design of three-dimensional multi-shell Fe3O4/SiO2/ZnO/ZnSe microspheres with type II heterostructure for photocatalytic applications
	Wang, D. D.; Han, D. L.; Shi, Z.; Wang, J.; Yang, J. H.; Li, X. Y.; Song, H.
	2018
发表期刊	Applied Catalysis B-Environmental
ISSN	0926-3373
卷号	227 页码:61-69
摘要	Here, a new three-dimensional (3D) multi-shell Fe3O4/SiO2/ZnO/ZnSe (FSZ-ZnSe) photocatalyst with a type II heterostructure was successfully produced by a convenient synthetic route. The amount of ZnSe particles can be regulated by varying the reactant concentration, and five kinds of FSZ-ZnSe samples (FSZ-ZnSe0, FSZ-ZnSe1, FSZ-ZnSe2, FSZ-ZnSe3 and FSZ-ZnSe4) were obtained. The photocatalytic performances of all as-prepared samples under UV and visible light irradiation were evaluated by the photocatalytic elimination of rhodamine B (RhB) aqueous solution. No matter which light source was used, the FSZ-ZnSe3 sample exhibited enhanced photocatalytic activity in comparison with other samples, benefiting from the sensitization of a proper amount of ZnSe particles, which not only facilitated the separation of photo-induced carriers but also extended the light absorption. Moreover, compared to visible light radiation, the FSZ-ZnSe3 sample under UV light showed remarkably enhanced degradation efficiency toward RhB base on the Z-scheme type transfer of photo-generated electron-hole pairs. The Z-scheme mechanism was confirmed using radical trapping experiments and hydroxyl radical (center dot OH) formation determination study. Meanwhile, the FSZ-ZnSe3 sample exhibited excellent magnetic response and high stability during the recycling photocatalytic experiments.
关键词	Magnetic separation Multi-shell ZnO/ZnSe Type II heterostructure Photocatalysis shell arrays photodegradation microstructure nanocomposites degradation morphology nanowire growth Chemistry Engineering
DOI	10.1016/j.apcatb.2018.01.002
收录类别	SCI ; EI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/61096
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	Wang, D. D.,Han, D. L.,Shi, Z.,et al. Optimized design of three-dimensional multi-shell Fe3O4/SiO2/ZnO/ZnSe microspheres with type II heterostructure for photocatalytic applications[J]. Applied Catalysis B-Environmental,2018,227:61-69.
APA	Wang, D. D..,Han, D. L..,Shi, Z..,Wang, J..,Yang, J. H..,...&Song, H..(2018).Optimized design of three-dimensional multi-shell Fe3O4/SiO2/ZnO/ZnSe microspheres with type II heterostructure for photocatalytic applications.Applied Catalysis B-Environmental,227,61-69.
MLA	Wang, D. D.,et al."Optimized design of three-dimensional multi-shell Fe3O4/SiO2/ZnO/ZnSe microspheres with type II heterostructure for photocatalytic applications".Applied Catalysis B-Environmental 227(2018):61-69.

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