Preparation, photocatalytic properties and mechanism of Fe or N-doped Ag/ZnO nanocomposites

被引：29
作者：
Meng, Alan [1 ]
Li, Xiujuan [1 ]
Wang, Xianlin [2 ]
Li, Zhenjiang [3 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Chem & Mol Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China
[2] Qingdao East China Engn Machinery Co Ltd, Qingdao 266111, Peoples R China
[3] Qingdao Univ Sci & Technol, Coll Electromech Engn, Qingdao 266061, Peoples R China
来源：
CERAMICS INTERNATIONAL | 2014年 / 40卷 / 07期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Ag/ZnO nanocomposites; Fe or N-doped; Photocatalytic property; Mechanism; AG-ZNO; DEGRADATION; DYES;
D O I：
10.1016/j.ceramint.2014.01.153
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Fe or N-doped Ag/ZnO nanocomposites were synthesized by the dual-step liquid deposition method and one-step liquid deposition combined with plasma nitriding. The as-synthesized nanocomposites were characterized by transmission electron microcopy, high-resolution transmission electron microcopy, X-ray diffraction and X-ray photoelectron spectroscopy. In addition, the photocatalytic properties of Fe or N-doped Ag/ZnO nanocomposites were evaluated by the degradation of methyl orange (MO) under ultraviolet light irradiation using our self-made photocatalytic apparatus. Results showed that Fe or N-doped Ag/ZnO nanocomposites exhibited superior photocatalytic properties compared to the undoped Ag/ZnO nanocomposites. The concentration of ferric sulfate solution and doping ratio of n(Fe): n(ZnO) played an important role in improving photocatalytic properties of Fe-doped Ag/ZnO nanocomposites and the optimized concentration and doping ratio were determined to be 0.134 M and 5%, respectively. Moreover, the plasma nitriding time also played an important role and the optimal plasma nitriding time was 30 min. The enhanced photoactivity mechanism for Fe or N-doped Ag/ZnO nanocomposites was adequately discussed. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
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收藏
页码：9303 / 9309
页数：7
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