Cadmium Sulfide鈥揊errite Nanocomposite as a Magnetically Recyclable Photocatalyst with Enhanced Visible-Light-Driven Photocatalytic Activity and Photostability

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• 作者：Pan Xiong ; Junwu Zhu ; Xin Wang
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2013
• 出版时间：December 4, 2013
• 年：2013
• 卷：52
• 期：48
• 页码：17126-17133
• 全文大小：521K
• 年卷期：v.52,no.48(December 4, 2013)
• ISSN：1520-5045

文摘

We report a facile strategy to fabricate a cadmium sulfide鈥揻errite (CdS鈥揗Fe₂O₄, M = Zn, Co) nanocomposite with differing ferrite content via a two-step hydrothermal method and demonstrate its application as a magnetically recyclable photocatalyst with enhanced visible-light-driven photocatalytic activity and photostability. The photocatalytic activities of as-prepared photocatalysts are evaluated by the degradation of rhodamine B (RhB) and 4-chlorophenol (4-CP) in aqueous solution under visible-light irradiation. Compared with pure CdS, both CdS鈥揨nFe₂O₄ and CdS鈥揅oFe₂O₄ show more broad absorption in the visible-light region, which favors the visible-light utilization for better photocatalytic performance. Moreover, the surface area of cadmium sulfide鈥揻errite is much higher than that of pure CdS, also resulting in enhanced photocatalytic activity. Furthermore, the synergic effects of CdS and ferrites can reduce the recombination probability of photogenerated electron鈥揾ole pairs and enhance the charge separation efficiency, leading to high photocatalytic performance and remarkable inhibited photocorrosion.