| Ag/ZnO/ZnSe三元异质结的合成及其可见光光催化性能 |
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| 引用本文： | 梁建,张彩霞,董海亮,何霞,申艳强,许并社.Ag/ZnO/ZnSe三元异质结的合成及其可见光光催化性能[J].无机化学学报,2015,31(2):260-266. |
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| 作者姓名： | 梁建 张彩霞 董海亮 何霞 申艳强 许并社 |
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| 作者单位： | 太原理工大学新材料界面科学与工程教育部重点实验室,太原030024;太原理工大学材料科学与工程学院,太原030024 |
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| 基金项目： | 国家自然科学基金(No.51002102);山西省自然科学基金(No.2012011046-7)资助项目 |
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| 摘 要： | 以Ag纳米线为模板,通过两步水浴法合成了Ag/Zn O/Zn Se三元异质结光催化材料。利用场发射扫描电子显微镜(FESEM)、X射线能谱仪(EDS)、X射线衍射仪(XRD)以及透射电子显微镜(FETEM)对样品的形貌和结构进行了表征。结果显示,Ag/Zn O/Zn Se三元异质结为蠕虫状的Ag/Zn O二元异质结外镶嵌着Zn Se小颗粒。在可见光下,对比纯Ag纳米线、纯Zn O纳米球、Ag/Zn O异质结对罗丹明B的可见光降解效率,结果发现Ag/Zn O/Zn Se异质结表现出了更高的光催化效率。其光催化性能的提高主要是由于Ag/Zn O/Zn Se异质结的作用促使电子空穴对的分离,降低了电子空穴对的复合机率,从而提高了材料的光催化效率。
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| 关 键 词： | Ag Zn O Zn Se 光催化效率 |
| 收稿时间： | 2014/7/15 0:00:00 |
| 修稿时间： | 2014/10/27 0:00:00 |
Ag/ZnO/ZnSe Heteronanostructure: Synthesis and Photocatalytic Properties with Visible Light Irradiation |
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| LIANG Jian,ZHANG Cai-Xi,DONG Hai-Liang,HE Xi,SHEN Yan-Qiang and XU Bing-She.Ag/ZnO/ZnSe Heteronanostructure: Synthesis and Photocatalytic Properties with Visible Light Irradiation[J].Chinese Journal of Inorganic Chemistry,2015,31(2):260-266. |
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| Authors: | LIANG Jian ZHANG Cai-Xi DONG Hai-Liang HE Xi SHEN Yan-Qiang and XU Bing-She |
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| Institution: | Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Research Center of advanced Materials Science and Technology, Taiyuan 030024, China;Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Research Center of advanced Materials Science and Technology, Taiyuan 030024, China;Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Research Center of advanced Materials Science and Technology, Taiyuan 030024, China;Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Research Center of advanced Materials Science and Technology, Taiyuan 030024, China;Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Research Center of advanced Materials Science and Technology, Taiyuan 030024, China;Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Research Center of advanced Materials Science and Technology, Taiyuan 030024, China |
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| Abstract: | Ag/ZnO/ZnSe heterostructure nanocatalysts were successfully synthesized via twice immersion method by use of as-prepared Ag nanowire. The structure and morphology of Ag/ZnO/ZnSe heterostructure are investigated by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS) field emission transmission electron microscopy (FETEM). It is proved that Ag/ZnO/ZnSe heterostructure was consisted with vermicular Ag/ZnOheterostructure coated by ZnSe nanoparticles. Compared with pure Ag nanowire, pure ZnOnanosphere and Ag/ZnOheterostructure, the results showed that the photocatalytic activity of the Ag/ZnO/ZnSe heterostructure was higher than other samples. The enhanced photocatalytic activity could be attributed to the formation of heterostructure, which might improve the separation of photogenerated electron-hole pairs, and decrease recombination probability. |
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| Keywords: | Ag ZnO ZnSe photocatalytic efficiency |
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