Synthesis of Highly Efficient Ag@AgCl Plasmonic Photocatalysts with Various Structures
Synthesis of Highly Efficient Ag@AgCl Plasmonic Photocatalysts with Various Structures
复制标题
多种结构高效Ag@AgCl等离子体光催化剂的合成
DOI：
10.1002/chem.200901954
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发表时间：
2010-01-01
影响因子：
4.3
通讯作者：
Wang, Xiaoning
中科院分区：
文献类型：
--
作者：
Wang, Peng;Huang, Baibiao;Wang, Xiaoning
通过一个简单的离子交换过程（使用不同的前体）和光诱导化学还原反应，高效的Ag@AgCl等离子体光催化剂具有各种自组装结构，包括微棒，不规则球，和空心球-已被制造。采用X射线衍射、X射线光电子能谱、扫描电子显微镜和紫外-可见漫反射光谱对所制备的Ag@AgCl催化剂进行了表征。研究了不同形貌对催化剂性能的影响。发现Ag@AgCl中元素Ag的平均含量为约3.2摩尔%。所有催化剂在可见光区都有很强的吸收。所得Ag@AgCl样品在可见光照射下表现出更强的光催化降解有机污染物的活性。等离子体光催化剂的稳定性也进行了详细的研究。
By means of a simple ion-exchange process (using different precursors) and a light-induced chemical reduction reaction, highly efficient Ag@AgCl plasmonic photocatalysts with various self-assembled structures-including microrods, irregular balls, and hollow spheres-have been fabricated. All the obtained Ag@AgCl catalysts were characterized by means of X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscopy, and UV-visible diffuse reflectance spectroscopy. The effect of the different morphologies on the properties of the pholocatalysts was studied. The average content of elemental Ag in Ag@AgCl was found to be about 3.2 mol%. All the catalysts show strong absorption in the visible-light region. The obtained Ag@AgCl samples exhibit enhanced photocatalytic activity for the degradation of organic contaminants under visible-light irradiation. The stability of the plasmonic photocatalysts was also investigated in detail.