Maintaining the localized surface plasmon resonance of copper nanoparticles by defective TiO2 thin films

被引：5
|
作者：
Zhao, Shiqi [1 ]
Cheng, Zhitao [1 ]
Wang, Shuai [1 ]
Hao, Hongliang [1 ]
Fang, Yingcui [1 ,2 ]
机构：
[1] Hefei Univ Technol, Dept Vacuum Sci & Technol, Hefei 230009, Peoples R China
[2] Hefei Univ Technol, Intelligent Mfg Inst, Hefei 230051, Peoples R China
来源：
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 2021年 / 127卷 / 12期
基金：
中国国家自然科学基金;
关键词：
CU NANOPARTICLES; METHYLENE-BLUE; XPS ANALYSIS; OXIDATION; GROWTH; GOLD;
D O I：
10.1007/s00339-021-05073-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The localized surface plasmon resonance (LSPR) of copper nanoparticles (CuNPs) damps quickly in air due to the easy oxidation of copper atoms. Finding ways to retard the oxidation of CuNPs is critical for the applications based on the LSPR of CuNPs. In this paper, we report on a new method to maintaining the LSPR of CuNPs by deposition of CuNPs on TiO2 thin films in vacuum followed by annealing in nitrogen ambient. The anti-oxidation properties of the CuNPs were improved greatly. In three days, the LSPR intensities at 532 and 633 nm were reduced by only 40 and 32%, respectively. This method is simple and cost-effective.
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收藏
页数：8
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