Guang-mao LI, Sheng-ya QIAO, Chen ZHU, Fu-li ZHENG, Sen YANG, Han-xian CAI. Preparation and Application of Micro-Nano Structure SERS Substrate Based on Copper Mesh Displacement Reaction[J]. Spectroscopy and Spectral Analysis, 2021, 41(10): 3166
- Spectroscopy and Spectral Analysis
- Vol. 41, Issue 10, 3166 (2021)
Fig. 1. The molecular structure of furfural
Fig. 2. Schematic diagram of laboratory confocal laser Raman spectroscopy experimental platform
Fig. 3. Changes of TEM copper mesh before and after chemical reaction
Fig. 4. Labelled detection sites
Fig. 5. Electron microscope images of micro-nano SERS substrate
(a): 1 μm; (b): 200 nm
(a): 1 μm; (b): 200 nm
Fig. 6. SERS Raman spectra of transformer oil mixed with furfural (a ), substrate (b ), transformer oil (c ) and furfural (d )
Fig. 7. Comparison of Raman spectra of furfural transformer oil samples with different concentrations
Fig. 8. The relationship between the intensity ratio of the Raman characteristic peak of furfural in transformer oil at 1 702 cm-1 to the internal standard and the content of furfural in transformer oil
Fig. 9. Raman spectra of obtained from site 1 to site 15
Fig. 10. Intensities of Raman characteristic peak at 1 702 cm-1 measured from site 1 to site 15
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Table 1. Materials for micro-nano SERS substrate fabrication
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