NAg/ZnO纳米复合材料的合成

 孟春雷， 李镇江* , 刘晓珑

（青岛科技大学 机电工程学院，山东 青岛 266061）

摘要： 以NH3为N源，通过气氛渗氮法对采用配合物沉淀法制备出的Ag/ZnO纳米材料进行N掺杂，制备出NAg/ZnO纳米复合材料。应用X射线衍射(XRD)、透射电子显微镜(TEM)、扫描电子显微镜(SEM)、紫外可见吸收光谱(UVVis)等测试手段对制备产物的物相结构、微观形貌及吸光性能进行了表征。以甲基橙（MO）为目标污染物，研究了制备产物在模拟日光照射下的光催化性能。结果表明：Ag粒子附着于棒状ZnO表面，N进入ZnO晶格；N掺杂能够显著提高Ag/ZnO纳米复合材料的光催化性能及其稳定性，以NAg/ZnO为光催化剂，在模拟日光下照射降解MO 100 min，MO的降解率达到100%，较Ag/ZnO提高25%，且放置30 d后光催化性能基本保持不变。

关键词：  NAg/ZnO； NH3； 气氛渗氮； 模拟日光； 光催化性能

中图分类号：  TB 383； TQ 132.4                文献标志码：  A

 Synthesis and Photocatalytic Activity of     Ndoped Ag/ZnO Nanocomposites

 MENG Chunlei, LI Zhenjiang, LIU Xiaolong

 (College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, China)

Abstract: Ndoped Ag/ZnO nanocomposites were successfully synthesized by complexes precipitation method combined with atosphere nitriding method with NH3 as the nitrogen source. The microstructure, morphology and spectroscopic properties of the products were characterized by Xray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM) and UVvisible absorption spectrum. The photocatalytic activity of the products was investigated by degradation of methyl orange (MO). The results indicated that Ag loaded on the surface of ZnO, N entered into the ZnO lattice. The photocatalytic activity and stability of Ag/ZnO was obviously enhanced by N doping and the degradation rate of MO reached 100% under simulated sunlight irradiation for 100 min, increased by 25% than that of Ag/ZnO.The photocatalytic activity of Ndoped Ag/ZnO almost unchanged in 30 d.

 Key words: Ndoped Ag/ZnO; NH3; atmosphere nitriding; simulative sunlight; photocatalytic activity

 收稿日期： 20140306

基金项目： 国家自然科学基金项目（50972063）；山东省自然科学基金项目（ZR2011EMQ011；ZR2011EMZ001）.

作者简介： 孟春雷（1987—），男，硕士研究生. *通信联系人.

文章编号：16726987（2015）03028105； DOI： 10.16351/j.16726987.2015.03.010