Journal
CHEMICAL ENGINEERING JOURNAL
Volume 217, Issue -, Pages 185-191Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2012.11.109
Keywords
ZnFe2O4@ZnO nanoparticles; Core-shell structure; Solvothermal method; Photocatalysis
Categories
Funding
- Talents Introduction Project of Yancheng Institute of Technology [XKR2011008]
- Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province [AE201122, AE201165]
Ask authors/readers for more resources
Magnetically separable ZnFe2O4@ZnO nanoparticles with enhanced photocatalytic activity were successfully synthesized by two steps. First, ZnFe2O4 nanoparticles (NPs), which served as seeding materials, were synthesized using a solvothermal method. Second, wurtzite ZnO was coated on the ZnFe2O4 particle surfaces on the basis of a chemical precipitation method. The as-prepared samples were characterized with X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), High Resolution Transmission Electron Microscopy (HRTEM) and Energy-dispersive X-ray spectroscopy (EDS). Photodegradation experiments of the samples were carried out by choosing Methylene Blue (MB) as a model target under UV irradiation with homemade photocatalytic apparatus. The results indicated that the obtained core-shell ZnFe2O4@ZnO NPs exhibited higher photocatalytic activity than pure ZnO. In addition, when the molar ratio of ZnFe2O4 to ZnO was 1:10, the obtained product showed the highest photocatalytic activity. Furthermore, the core-shell ZnFe2O4@ZnO NPs could be conveniently separated by using an external magnetic field and the photocorrosion of ZnO was inhibited to some extent. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available