| Autor: |
Tan, Congwei, Zhu, Gangqiang, Hojamberdiev, Mirabbos, Xu, Cai, Liang, Jia, Luo, Pengfeng, Liu, Yun |
| Předmět: |
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| Zdroj: |
Journal of Cluster Science; Dec2013, Vol. 24 Issue 4, p1115-1126, 12p |
| Abstrakt: |
Magnetically recoverable Fe 3O 4/BiOCl nanocomposite photocatalysts were fabricated by a simple chemical coprecipitation method at room temperature. The amount of Fe 3O 4 incorporated into BiOCl was varied from 0 to 20 wt%. The as-synthesized samples were characterized by X-ray diffraction, transmission electron microscopy, energy dispersive spectroscopy, UV–Vis diffuse reflectance spectroscopy, and vibrating sample magnetometer. The obtained results show that the as-synthesized samples mainly contain both crystalline phases (Fe 3O 4 and BiOCl) and are composed of flower-like nanostructures. Compared to UV light-responsive BiOCl, all the nanocomposite photocatalysts show a strong light absorbance in the range of 250–800 nm, demonstrating that the Fe 3O 4/BiOCl nanocomposites can respond to visible as well as UV light. Moreover, visible light absorbance was increased with the increase in the Fe 3O 4 amount in the composite. The photocatalytic activity of nanocomposite photocatalysts was evaluated by the photodegradation of Rhodamine B (RhB) over the samples under visible light irradiation. The 10 wt% Fe 3O 4/BiOCl nanocomposite photocatalyst shows the highest photocatalytic efficiency among the samples. The Fe 3O 4/BiOCl nanocomposite photocatalyst was stable under visible light irradiation to efficiently degrade RhB molecules after five cycles and could be easily recovered with a magnet after each cycle. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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