Yiqian Guo, Hongyan Wang, Miao Qin, Yida Zeng, Li Xia, Yangpo Hu. Effect of Nano-Film Substrates on Ciprofloxacin Detection by Surface-Enhanced Raman Spectroscopy[J]. Laser & Optoelectronics Progress, 2022, 59(23): 2317001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 23, 2317001 (2022)
Fig. 1. Schematic diagram of assembly process of gold nano-colloid enhanced substrate. (a) 5 µL of gold nano-colloids are dropped onto silicon wafer as substrate; (b) volume of gold colloids decrease during natural drying; (c) gold colloids are dried completely to form golden films on silicon wafers
Fig. 2. SERS pretreatment. (a) Original SERS; (b) LabSpec software operation interface; (c) SERS after pretreatment
Fig. 3. UV-vis spectra of self-made gold colloids. (a) Au NPs; (b) Au NRs
Fig. 4. SEM morphology of gold nanoparticles. (a) Au NPs and particle size distribution; (b) Au NRs
Fig. 5. Normal Raman spectra (NRS) of CIP
Fig. 6. SERS of CIP based on different laser wavelengths
Fig. 7. NRS, SERS based on Au NPs substrate of CIP aqueous solution and Raman spectra of Au NPs substrate
Fig. 8. SERS based on Au NRs substrate of CIP aqueous solution and Raman spectra of Au NRs substrate substrate
Fig. 9. Stability research atlas. (a) Au NPs substrate; (b) Au NRs substrate
Fig. 10. SERS of chicken extracts containing 2.0
Fig. 11. SERS images of different concentrations of CIP solution detected based on Au NPs substrate
Fig. 12. Working curves of CIP solutions with different concentrations detected based on Au NPs substrate. (a) 1167 cm-1; (b) 1378 cm-1
Fig. 13. SERS images of different concentrations of CIP solution detected based on Au NRs substrate
Fig. 14. Working curves of CIP solutions with different concentrations detected based on Au NRs substrate. (a) 1142 cm-1;(b) 1269 cm-1; (c) 1389 cm-1
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Table 1. Main peak attribution of NRS, SERS based on Au NPs substrate and Au NRs substrate of CIP
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Table 2. Standard curves of CIP standard solution under different Raman displacements measured based on Au NPs substrate
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Table 3. Recovery parameters of CIP solution detected based on Au NPs substrate
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Table 4. Standard curves of CIP standard solution under different Raman displacements measured based on Au NRs substrate
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Table 5. Recovery parameters of CIP solution detected based on Au NRs substrate
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