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

Inactive Publication Date: 2015-12-16
NORTHWEST UNIV(CN)
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Based on the problems existing in the prior art, the present invention provides a SERS substrate based on boehmite nano-films and a preparation method to solve the technical problems of low SERS detection sensitivity and high detection limit concentration in the prior art

Method used

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  • SERS (Surface enhanced Raman Scattering) substrate based on boehmite nanometer film and preparation method thereof
  • SERS (Surface enhanced Raman Scattering) substrate based on boehmite nanometer film and preparation method thereof
  • SERS (Surface enhanced Raman Scattering) substrate based on boehmite nanometer film and preparation method thereof

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Embodiment

[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.

[0055] The metal coating can also be plated with a la...

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Abstract

The invention provides a SERS (Surface enhanced Raman Scattering) substrate based on boehmite nanometer film and a preparation method thereof. According to the method, a layer of a boehmite nanometer film is grown on an aluminium substrate by employing a water bath process, and a layer of a metal film is plated on the boehmite nanometer film. According to the method, the SERS active substrate, which is controllable in morphology, high in repeatability, uniform in hot spots, stable in properties, capable of growing in a large area, and extremely high in sensitivity, can be obtained on the high-aluminium substrate through the simple water bath process. The preparation technology for the SERS substrate is simple, high in efficiency, low in cost and suitable for large-scale production, and provides an effective batch preparation new approach for scientific research on preparation and application of the SERS substrate.

Description

technical field [0001] The invention belongs to the technical field of surface nanometer materials and relates to a SERS substrate, in particular to a boehmite nano film-based SERS substrate and a preparation method. Background technique [0002] Surface enhanced Raman scattering (Surface enhanced Raman Scattering, SERS) is mainly an abnormal optical enhancement phenomenon of nanoscale rough surfaces or particle systems. After decades, it has developed into a single molecule detection level, suitable for low concentration detection. The ultra-sensitive spectroscopy technology has great application potential in biology, diagnostics, medicine, material science, environmental science and analytical science. Since the surface morphology of the substrate on which molecules are adsorbed is an important factor affecting the occurrence of the SERS effect and the strength of the SERS signal, the carrier matrix of the molecule is very critical, so the research on SERS active substrate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65
Inventor 王凯歌王磊隋超璠王雪文王爽孙聃白晋涛
Owner NORTHWEST UNIV(CN)
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