Ag-TiO2-Ag core-shell-satellite nanowires: Facile synthesis and enhanced photocatalytic activities

被引：9
|
作者：
Li, Maoying [1 ]
Wang, Ruxue [1 ]
Zhong, Peng [1 ]
Li, Xiukai [1 ]
Huang, Zhipeng [1 ]
Zhang, Chi [1 ]
机构：
[1] Jiangsu Univ, Sci Res Acad, Zhenjiang 212013, Jiangsu, Peoples R China
来源：
MATERIALS LETTERS | 2012年 / 80卷
基金：
中国国家自然科学基金;
关键词：
semiconductor; nanocomposite; solar energy material; functional; photocatalyst; NANOPARTICLES; COMPOSITE; NANOCRYSTALS; IRRADIATION; DEPOSITION; CATALYSIS; CLUSTERS; ROUTE; SIZE;
D O I：
10.1016/j.matlet.2012.04.109
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ag-TiO2-Ag core-shell-satellite nanowires were fabricated by hydrothermal growth and post-growth thermal annealing. After annealed at 600 degrees C for 8 h, core-shell Ag-TiO2 nanowires evolved into core-shell-satellite nanowires, with crystalline Ag core, shell layer of crystalline TiO2 and isolated Ag particles scattering on the shell-like satellites. The morphologies, microstructures, absorption properties, and photocatalytic activities of the resultant nanostructures were investigated. Ag-TiO2-Ag core-shell-satellite nanowires showed remarkable enhancement of photocatalytic activity, in comparison with the pristine Ag-TiO2 nanowires, and the crystalline TiO2 component in core-shell-satellite nanowires. The enhancement could be attributed to both the enhancement of photon absorptions induced by core-shell-satellite morphology and the improvement of TiO2 crystallinity induced by annealing. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：138 / 140
页数：3
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