期刊
APPLIED CATALYSIS B-ENVIRONMENTAL
卷 90, 期 3-4, 页码 458-462出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2009.04.005
关键词
Photocatalyst; Magnetic nanoparticles; BiOCl; Coupled structure
资金
- National Natural Science Foundation of China [50672117]
- National Basic Research Program of China (973 Program) [2007CB613302]
- Nanotechnology Programs of Science and Technology Commission of Shanghai Municipality [0852nm00500]
The magnetic photocatalyst, Fe3O4/BiOCl nanocomposite, was prepared and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM) and high-resolution TEM (HRTEM), physical property measurement system (PPMS). It was found that Fe3O4/BiOCl was an effective photocatalyst to degrade the organic dyes. Compared with the conventional core-shell magnetic photocatalysts, such as Fe3O4/TiO2 system which dramatically lost their intrinsically photocatalytic activity due to the introduction of the magnetic core, the as-synthesized Fe3O4/BiOCl reserved as high photocatalytic activity as that of BiOCl. The high catalytic activity possibly involved in a coupled structure and the special interfaces, that is, the probability of combination of the carriers could be reduced in this system. Moreover, the superparamagnetic Fe3O4/BiOCl can be not only easily recycled but also fluidized by applying an external magnetic field. (C) 2009 Elsevier B.V. All rights reserved.
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