Acta Optica Sinica, Volume. 41, Issue 16, 1624001(2021)
Fabrication and Surface-Enhanced Raman Spectroscopy Performance of Three-Dimensional Cu(OH)2-Ag Substrate
In this study, a three-dimensional (3D) Cu(OH)2-Ag substrate with abundant “hotspots” is developed. First, the 3D Cu(OH)2 nanotubes (NTs) are developed on the surface of copper sheets through chemical etching. Then, silver nanoparticles (NPs) are adsorbed onto the surface of Cu(OH)2 NTs using self-assembly technique. The prepared Cu(OH)2-Ag substrate has a high Raman sensitivity with a mass concentration limit of detection (LOD) of 8.9×10 -10 g/L for probe molecule rhodamine 6G (R6G). Additionally, it has high uniformity and reproducibility with a relative standard deviation (RSD) of 8.79% and 3.49%, respectively. Simultaneously, the substrate has excellent sensitivity to malachite green (MG), and the mass concentration LOD of MG in river water is 2.13×10 -8 g/L. The 3D substrate is easy to fabricate and has excellent surface-enhanced Raman spectroscopy (SERS) performances. It shows that the substrate has great application prospects in detecting illegal fishery drugs in water.
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Erwei Liu, Xia Fan, Yuanping Huang, Yapeng Fan, Zengling Yang. Fabrication and Surface-Enhanced Raman Spectroscopy Performance of Three-Dimensional Cu(OH)2-Ag Substrate[J]. Acta Optica Sinica, 2021, 41(16): 1624001
Category: Optics at Surfaces
Received: Feb. 5, 2021
Accepted: Mar. 19, 2021
Published Online: Aug. 12, 2021
The Author Email: Yang Zengling (yangzengling@cau.edu.cn)