SERS (Surface enhanced Raman Scattering) substrate based on boehmite nanometer film and preparation method thereof
A nano-film and boehmite technology, applied in Raman scattering, material excitation analysis, etc., can solve the problems of low detection sensitivity and high detection limit concentration of SERS, and achieve high repeatability, controllable shape and stable properties Effect
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[0047] This embodiment provides a method for preparing a SERS substrate based on a boehmite nanofilm, comprising the following steps:
[0048] Step 1: High-purity polished aluminum cleaning;
[0049] Sub-step 1: For step 1: use acetone to sonicate for 15 minutes, rinse with deionized water;
[0050] Sub-step 2: Sonicate with alcohol for 10 minutes, rinse with deionized water;
[0051] Sub-step 3: Sonicate with deionized water for 10 minutes, and finally rinse with deionized water;
[0052] Step 2: using water as the reaction solvent, using a water bath method, for a high-purity (99.999%) metal aluminum film, under the condition of a water bath temperature of 60°C to 100°C, the water bath time is >1h;
[0053] Step 3: Drying, rinse with deionized water several times, and dry at 80°C.
[0054] Step 4: Coating a layer of gold with a thickness of 20 nm on the boehmite nano-film based on the high-purity aluminum substrate.
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