Preparation, characterization and photocatalytic activity of a novel composite photocatalyst: ceria-coated activated carbon.
Preparation, characterization and photocatalytic activity of a novel composite photocatalyst: ceria-coated activated carbon.
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DOI：
10.1016/j.jhazmat.2010.07.034
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发表时间：
2010-12
影响因子：
13.6
通讯作者：
Chao Wang;Y. Ao;Peifang Wang;J. Hou;J. Qian
中科院分区：
文献类型：
--
作者：
Chao Wang;Y. Ao;Peifang Wang;J. Hou;J. Qian
In the present work, a novel composite photocatalyst ceria-coated activated carbon (CCAC) was prepared by a facile method. The composite photocatalyst was characterized by X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET), scanning electron microscopy (SEM) and photocatalytic degradation of 4-chlorophenol (4-CP). A synergy effect for 4-CP degradation was observed because the activated carbon (AC) with strong adsorbent activity provided sites for the adsorption of 4-CP. Then, the adsorbed 4-CP can migrate continuously onto the surface of ceria particles and then degraded at there. Hydroquinone (HQ) and benzoquinone (BQ) were found to be the main intermediates of the photocatalytic 4-CP degradation with ceria or CCAC by HPLC measurement. The results suggested that the same reaction mechanism occurred in the presence of ceria or titania.
