Core/shell structured Zn/ZnO nanoparticles synthesized by gaseous laser ablation with enhanced photocatalysis efficiency

被引：44
|
作者：
Song, Lu [1 ]
Wang, Yafei [1 ]
Ma, Jing [1 ]
Zhang, Qinghua [2 ]
Shen, Zhijian [1 ,3 ]
机构：
[1] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China
[2] Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China
[3] Stockholm Univ, Arrhenius Lab, Dept Mat & Environm Chem, S-10691 Stockholm, Sweden
来源：
APPLIED SURFACE SCIENCE | 2018年 / 442卷
基金：
中国国家自然科学基金;
关键词：
Zinc; Zinc oxide; Laser ablation; Core-shell nanostructure; Photocatalysis; Defect; ZNO NANOPARTICLES; NANOSTRUCTURES; PHOTOLUMINESCENCE; LUMINESCENCE; GROWTH;
D O I：
10.1016/j.apsusc.2018.02.143
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Zinc oxide (ZnO) is a competitive candidate in semiconductor photocatalysts, only if the efficiency could be fully optimized especially by tailored nanostructures. Here we report a kind of core/shell structured Zn/ZnO nanoparticles with enhanced photocatalysis efficiency, which were synthesized by a highly-productive gaseous laser ablation method. The nanodroplets generated by laser ablation would be reduced to zinc in the protective atmosphere, and further be oxidized at surface to form a specific core/shell structured Zn/ZnO nanoparticles within seconds. Thanks to the formation of this Zn-ZnO Schottky junction, the photocatalysis degradation efficiency of such core/shell Zn/ZnO nanostructure is significantly improved owing to the enhanced visible light absorption and inhibited carrier recombination by introducing the metallic zinc. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：101 / 105
页数：5
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