TiO2 coated Au/Ag nanorods with enhanced photocatalytic activity under visible light irradiation

被引：167
|
作者：
Zhou, Na [1 ,2 ]
Polavarapu, Lakshminarayana [1 ,2 ]
Gao, Nengyue [1 ]
Pan, Yanlin [1 ,2 ]
Yuan, Peiyan [1 ,2 ]
Wang, Qing [2 ,3 ]
Xu, Qing-Hua [1 ,2 ]
机构：
[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore
[2] Natl Univ Singapore, NUSNNI Nanocore, Singapore 117576, Singapore
[3] Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117576, Singapore
来源：
NANOSCALE | 2013年 / 5卷 / 10期
基金：
新加坡国家研究基金会;
关键词：
GOLD NANOPARTICLES; CHARGE SEPARATION; AU NANOPARTICLES; SURFACE; WATER; NANOSTRUCTURES; HYDROGEN; GROWTH; DEGRADATION; GENERATION;
D O I：
10.1039/c3nr00517h
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A facile method was used to prepare uniform Au NR/TiO2 and Au/Ag NR/TiO2 core-shell composite nanoparticles. Au/Ag NR/TiO2 nanoparticles were found to display significantly enhanced visible light photo-catalytic activity compared to Au NR/TiO2 and the commercially available TiO2 nanoparticles. The enhancement mechanism was ascribed to injection of hot electrons of photo-excited Au/Ag NRs to TiO2, which was confirmed by 633 nm laser induced reduction of silver ions on the surface of Au/Ag NR/TiO2 composite nanoparticles.
引用
收藏
页码：4236 / 4241
页数：6
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