A kind of preparation method of Raman spectroscopic detection substrate
A Raman spectroscopic detection and substrate technology, applied in the field of analysis and detection, can solve problems such as high cost and unfavorable large-scale production, and achieve the effects of being conducive to large-scale production, simple operation and low cost
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Embodiment 1
[0030] (1) TiO 1.04 Preparation of nanorods: adding NaCl and titanium isopropoxide to 5 mol / L hydrochloric acid solution to make the concentrations of the two reach 0.7 mol / L and 0.042 mol / L respectively, and dissolve NaCl and titanium isopropoxide under high-speed stirring. Transfer the solution to a hydrothermal reaction kettle, clean the FTO glass in piranha liquid, and place it in the solution at an angle. After sealing, react at 150°C for 18 hours. After the reaction, the FTO glass was taken out and rinsed with deionized water. Annealed at 500°C for 30 minutes.
[0031] (2) Preparation and assembly of gold nanoparticles: the TiO prepared in (1) 1.04 The surface of the nanorod substrate was aminated with a freshly prepared amination solution (40 μL triethoxysilane, 0.5 mL deionized water and 0.5 mL ethanol) for 20 minutes, and after amination, the sample was dried at 60 °C for 10 minutes. minute. The supplies were then rinsed three times with deionized water. The sam...
Embodiment 2
[0037] The implementation process of this embodiment is the same as that of Embodiment 1 except for the following differences.
[0038] TiO prepared in (1) 1.04 The surface of the nanorod substrate was aminated with a freshly prepared amination solution (40 μL triethoxysilane, 0.5 mL deionized water and 0.5 mL ethanol) for 20 minutes, and after amination, the sample was dried at 60 °C for 10 minutes. minute. The supplies were then rinsed three times with deionized water. The sample was placed in 100 mL of 0.015 mol / L sodium citrate solution, and the solution was boiled using a constant temperature magnetic stirrer. Then stir rapidly and add 0.5mL 2mol / L chloroauric acid solution. After ten minutes of reaction, the solution was observed to change from colorless to wine red. Finally, the samples were removed and rinsed with deionized water.
[0039] The obtained result is different from the size and density of the gold nanoparticles in Example 1. The result is as image 3 a...
Embodiment 3
[0041] The implementation process of this embodiment is the same as that of Embodiment 1 except for the following differences.
[0042] TiO prepared in (1) 1.04 The surface of the nanorod substrate was aminated with a freshly prepared amination solution (40 μL triethoxysilane, 0.5 mL deionized water and 0.5 mL ethanol) for 20 minutes, and after amination, the sample was dried at 60 °C for 10 minutes. minute. The supplies were then rinsed three times with deionized water. The sample was placed in 100 mL of 0.015 mol / L sodium citrate solution, and the solution was boiled using a constant temperature magnetic stirrer. Then stir rapidly and add 1mL of 2mol / L chloroauric acid solution. After ten minutes of reaction, the solution was observed to change from colorless to wine red. Finally, the samples were removed and rinsed with deionized water.
[0043] The obtained result is different from the size and density of the gold nanoparticles in Example 1. The results obtained can ...
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