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Brush plating-based surface enhanced Raman spectrum SERS silver-plated active substrate and preparation method thereof

A surface-enhanced Raman and active substrate technology, applied in Raman scattering, material analysis through optical means, electrodes, etc., can solve problems such as poor uniformity, insufficient sensitivity and stability, and large size of nanoparticles on the surface of the substrate. The effect of convenient operation and cost reduction

Inactive Publication Date: 2020-12-25
JIAXING UNIV +1
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Problems solved by technology

[0013] The main purpose of the present invention is to provide a surface-enhanced Raman spectrum SERS silver-plated active substrate and a preparation method based on brush plating, which are used to solve the complex preparation process of the Raman spectrum metal active substrate provided by the prior art, and the nanoparticles on the substrate surface The large size and poor uniformity lead to the technical problem of insufficient sensitivity and stability of Raman spectroscopy metal active substrates in SERS detection, so as to improve the sensitivity and stability of Raman spectroscopy metal active substrates in SERS detection. technical effect

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  • Brush plating-based surface enhanced Raman spectrum SERS silver-plated active substrate and preparation method thereof
  • Brush plating-based surface enhanced Raman spectrum SERS silver-plated active substrate and preparation method thereof
  • Brush plating-based surface enhanced Raman spectrum SERS silver-plated active substrate and preparation method thereof

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[0045] figure 1 It is a method flow chart of a method for preparing a surface-enhanced Raman spectrum SERS silver-plated active substrate based on brush plating shown according to an exemplary embodiment, such as figure 1 Shown, the preparation method of this surface-enhanced Raman spectroscopy SERS silver-plated active substrate based on brush plating comprises:

[0046] Step 1): Combine 5-methylhydantoin with K 2 CO 3 Add to deionized water and stir to dissolve to obtain a mixed solution, then add Ag to the mixed solution successively 2 CO 3 , bipyridine and 2-methylthiocarbamate, drop KOH solution to adjust the pH value of the mixed solution to 9.0 ~ 9.5, to obtain the brush plating working solution, in the brush plating working solution, 5-methyl Hydantoin, K 2 CO 3 、Ag 2 CO 3 , bipyridine, and 2-methylthiocarbamate ratio are 30~40 g / L: 18~28 g / L: 30~35 g / L: 5~7 g / L: 0.1~0.4 g / L L.

[0047] In the brush plating working solution provided by the embodiment of the p...

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Abstract

The invention discloses a brush plating-based surface enhanced Raman spectrum SERS silver-plated active substrate and a preparation method thereof, and relates to the technical field of Raman spectrumdetection. The brush plating process is combined with the preparation process of the surface-enhanced Raman spectrum silver-plated active substrate, and the nucleation mechanism of silver crystal grains is converted into the instantaneous nucleation mechanism according to the preparation requirements of the surface of the surface-enhanced Raman spectrum silver-plated active substrate, that is a silver crystal nucleus generation accelerant is added into the prepared brush plating working solution, so that the nucleation quantity in unit time is increased, fine grains are facilitated to be achieved, and all of the best working parameters of the electric brush plating technology are further obtained; and the surface-enhanced Raman spectrum SERS silver-plated active substrate with nano-sizedsilver particles and good uniformity is prepared by a simple preparation process, so that the technical problems of poorer sensitivity and stability of a Raman spectrum metal active substrate in SERSdetection can be solved, and the technical effect of improving the sensitivity and stability of the Raman spectrum metal active substrate in SERS detection is achieved.

Description

technical field [0001] The invention relates to the technical field of Raman spectrum detection, in particular to a surface-enhanced Raman spectrum SERS silver-plated active substrate based on brush plating and a preparation method. Background technique [0002] The light intensity of Raman scattering is generally about 10 of the incident light intensity. -10 , the Raman scattering effect is extremely weak, and its application is therefore limited. In 1974, Fleischmann et al. observed that the Raman signal increased by nearly 6 orders of magnitude after adsorbing pyridine on the surface of a roughened silver electrode, and called this phenomenon the surface-enhanced Raman scattering effect (Surface-enhanced Raman scattering effect). Raman Scattering, SERS). In recent years, with the deepening of research on nanotechnology and surface science, related research on the preparation of substrates based on the SERS effect has also continued to develop and deepen. This is because...

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Application Information

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IPC IPC(8): C25D5/06C25D3/46C25D17/10C25D5/34C25F1/04G01N21/65
CPCC25D3/46C25D5/06C25D5/34C25D17/10C25F1/04G01N21/658
Inventor 赵健伟于晓辉赵博儒陈峰
Owner JIAXING UNIV
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