Copper nanorods with widely tunable plasmonic response and methods of making the same
By using gold nanodecahedrons as seeds to guide the directional growth of copper nanorods, the problems of poor morphological dispersion and reproducibility of copper nanorods were solved, and the size and aspect ratio of copper nanorods were tunable. Excellent plasmonic optical response and catalytic performance were obtained, which are suitable for photocatalysis, photothermal conversion and near-infrared sensing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
- Filing Date
- 2026-04-24
- Publication Date
- 2026-07-17
AI Technical Summary
In the existing technology, the controllable preparation of copper nanorods is difficult to precisely control the nucleation and growth behavior, has large morphological dispersion and poor reproducibility, and is easily oxidized in aqueous or oxygen-containing environments. There is a lack of preparation methods that can achieve uniform size, adjustable aspect ratio and wide range of controllable surface plasmon resonance peaks.
A rapid reduction-induced nucleation combined with thermal aging reconstruction method was adopted, using gold nanodecahedrons as heterogeneous growth seeds. By controlling the diameter and volume ratio of the gold nanodecahedrons, directional nucleation and anisotropic growth of copper nanorods were achieved. Hexadecylamine was used as a surfactant to promote the longitudinal growth of copper nanorods and inhibit the transverse growth.
Stable growth of copper nanorods and flexible adjustment of their size and aspect ratio were achieved, resulting in good near-infrared plasmonic optical response and plasmonic-enhanced catalytic activity. The nanorods are low in cost and abundant in reserves, making them suitable for photocatalysis, photothermal conversion and near-infrared sensing.
Smart Images
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