The magnetic photocatalyst, Fe 3 O 4 /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 Fe 3 O 4 /BiOCl was an effective photocatalyst to degrade the organic dyes. Compared with the conventional core–shell magnetic photocatalysts, such as Fe 3 O 4 /TiO 2 system which dramatically lost their intrinsically photocatalytic activity due to the introduction of the magnetic core, the as-synthesized Fe 3 O 4 /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 Fe 3 O 4 /BiOCl can be not only easily recycled but also fluidized by applying an external magnetic field.
Applied Catalysis B: Environmental – Elsevier
Published: Aug 17, 2009
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