Highly stable localized surface plasmon resonance of Cu nanoparticles obtained via oxygen plasma irradiation

被引：4

作者：

Fang, Yingcui ^{[1
]}

Xu, Bin ^{[1
]}

Wang, Shuai ^{[1
]}

Liu, Hongjun ^{[1
]}

Wang, Jie ^{[1
]}

Si, Mengting ^{[2
]}

机构：

[1] Hefei Univ Technol, Dept Vacuum Sci & Technol, Hefei 230009, Peoples R China

[2] Peking Univ, Sch Phys, Beijing 100083, Peoples R China

来源：

NANOSCALE | 2024年 / 16卷 / 20期

关键词：

CUPRIC OXIDE; OXIDATION; SPECTROSCOPY; SOLAR;

D O I：

10.1039/d3nr06277e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Copper nanoparticles (CuNPs) possess strong localized surface plasmon resonance (LSPR) in visible light. However, CuNPs are not chemically stable in air, which has seriously hindered the applications based on the LSPR of CuNPs. We developed an artificial method to passivate CuNPs as Al naturally does in air, preventing the oxidation of CuNPs through swift oxidation of the surface atoms via oxygen plasma irradiation. A hemispheric core-shell structure of CuNPs uniformly covered by a dense CuO shell (CuNPs@d-CuO) was constructed. The 4 nm d-CuO shell can prevent CuNPs from further oxidation. As a result, the LSPR of the CuNPs is stable in air over 180 days.

引用

页码：9748 / 9753

页数：6

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