共 5 条
Surface plasmon resonance enhanced light absorption of Au decorated composition-tuned ZnO/ZnxCd1-xSeyTe1-y core/shell nanowires for efficient H2 production
被引:14
|作者:
Zhan, Xueying
[1
]
Bao, Yanjun
[2
]
Wang, Fengmei
[1
]
Wang, Qisheng
[1
]
Cheng, Zhongzhou
[1
]
Wang, Zhenxing
[1
]
Xu, Kai
[1
]
Fang, Zheyu
[2
]
He, Jun
[1
]
机构:
[1] Natl Ctr Nanosci & Technol, Beijing 100190, Peoples R China
[2] Peking Univ, Sch Phys, Beijing 100871, Peoples R China
基金:
北京市自然科学基金;
中国国家自然科学基金;
关键词:
CORE-SHELL;
CHARGE SEPARATION;
ARRAYS;
HETEROSTRUCTURES;
PHOTOCATALYSIS;
NANOPARTICLES;
DYNAMICS;
NANORODS;
D O I:
10.1063/1.4916397
中图分类号:
O59 [应用物理学];
学科分类号:
摘要:
Efficient solar-to-hydrogen photoelectrodes need harvest sunlight to capacity and improve the separation efficiency of charge carriers for chemical reactions in water. Herein, we demonstrate the merits of type-II heterostructures with component controllable quaternary shells (ZnxCd1-xSeyTe1-y) and the surface plasmon resonance of Au nanoparticles to satisfy photocatalytic requirements. Our ZnO/ZnxCd1-xSeyTe1-y/Au nanostructures display a broad absorption edge from UV to NIR (Near Infrared) and high charge separation efficiency. The finite element method simulation and UV-vis-NIR diffuse reflectance spectroscopy confirm the enhanced absorption of visible light. Furthermore, these ZnO/ZnxCd1-xSeyTe1-y/Au heterostructures show remarkable hydrogen-production ability from water, suggesting a type of photocatalytic paradigm for H-2 production. (C) 2015 AIP Publishing LLC.
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页数:5
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