Journal
APPLIED SURFACE SCIENCE
Volume 442, Issue -, Pages 101-105Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2018.02.143
Keywords
Zinc; Zinc oxide; Laser ablation; Core-shell nanostructure; Photocatalysis; Defect
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Funding
- National Natural Science Foundation of China [51272124]
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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.
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