Our study aimed to produce SERS substrates using nanostructured copper (Cu) surfaces prepared by laser ablation in water. A laser ablation schema was designed for this purpose. The laser power and laser irradiation time for creating a nanostructured surface suitable for SERS were determined. To increase the enhancement factor (EF) of the SERS substrates, gold (Au) and silver (Ag) nanoparticles were deposited on the ablated Cu surfaces to produce AuNP/aCu and AgNP/aCu substrates. The Au (and Ag) nanoparticles were also prepared by laser ablation of a Au (and Ag) piece in ethanol. The EFs for SERS of the AuNP/aCu and AgNP/aCu substrates are 1.2 × 10⁶ and 6 × 10⁶, respectively. The SERS spectra of malachite green with low concentrations of 0.1 ppm can be detected with high quality by using these SERS substrates.

我们的研究旨在使用通过在水中进行激光烧蚀制备的纳米结构铜（Cu）表面生产SERS基板。为此目的设计了激光烧蚀方案。确定用于产生适合于SERS的纳米结构表面的激光功率和激光照射时间。为了增加SERS基底的增强因子（EF），将金（Au）和银（Ag）纳米颗粒沉积在烧蚀的Cu表面上，以生产AuNP / aCu和AgNP / aCu基底。还通过在乙醇中激光烧蚀金（和银）片来制备金（和银）纳米颗粒。AuNP / aCu和AgNP / aCu基板的SERS的EFs为1.2×10 ⁶和6×10 ⁶， 分别。通过使用这些SERS底物，可以高质量检测低浓度0.1 ppm的孔雀石绿的SERS光谱。