Hierarchical Hollow Structure ZnO: Synthesis, Characterization, and Highly Efficient Adsorption/Photocatalysis toward Congo Red
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- 作者：Shi Lan ; Lu Liu ; Ruiqing Li ; Zhihua Leng ; Shucai Gan
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2014
- 出版时间：February 26, 2014
- 年：2014
- 卷：53
- 期：8
- 页码：3131-3139
- 全文大小：536K
- 年卷期：v.53,no.8(February 26, 2014)
- ISSN：1520-5045
文摘
Hierarchical hollow structure ZnO (CZ-400) was synthesized successfully by a facile homogeneous precipitation method. Morphology, structure, and optical properties of the as-prepared CZ-400 were characterized by different techniques. The mentioned product possessed hollow core and hierarchical shell morphology, and grew well-crystallinity with high surface area. The CZ-400 exhibited adsorption capacity and photocatalyst activity toward congo red (CR) higher than those of TiO2 P25 and commercial ZnO. This is attributed to the hierarchical structure of CZ-400, which provides the improved charge transport and the reduced recombination rate of photogenerated electron鈥揾ole pairs. In addition, the combinatorial effect of adsorption and photodegradation reflected the importance of adsorption in the enhanced photoreactivity. The results indicated that CZ-400 is a potential catalyst and adsorbent material for removal of CR from water samples.