期刊
MATERIALS LETTERS
卷 122, 期 -, 页码 201-204出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.12.106
关键词
MgFe2O4-ZnO; Flower-like nanotube; Heterojunction; Photocatalyst
资金
- National Natural Science Foundation of China [51272086]
- Technology Development Program of Jilin Province [20100417]
Novel heterojunction MgFe2O4-ZnO was employed as a photocatalyst to photodegrade organic pollutants Rhodamine B (RhB). This heterojunction was prepared by two steps. First, ZnO flower-like nanotube bundles were synthesized by using a simple solution method at low temperature. Second, MgFe2O4 was coated on ZnO surfaces on the basis of a chemical co-precipitation method. The as-prepared samples were characterized with X-ray diffraction (XRD), UV-3150 double-beam spectrophotometer, field-emission scanning electron microscope (FE-SEM), transmission electron microscopy (TEM), and high-resolution transmission (HRTEM). Photodegradation experiments results indicated that the obtained heterojunction MgFe2O4-ZnO exhibited higher photocatalytic activity than that of pure ZnO orMgFe(2)O(4). Furthermore, MgFe2O4-ZnO could be separated conveniently by using an external magnetic field. The enhanced photocatalytic ability of MgFe2O4-ZnO composites could be attributed to the interconnected heterojunction of MgFe2O4 and ZnO nanoparticles. (C) 2014 Published by Elsevier B.V.
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