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Preparation method of novel surface-enhanced Raman spectroscopy substrate

A surface-enhanced Raman and substrate technology is applied in the field of SERS substrate nanomaterials to achieve the effects of reducing environmental pollution, simplifying processes, and stabilizing phase states.

Inactive Publication Date: 2021-01-05
CHANGCHUN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since people's research on SERS substrates is mostly limited to noble metal substrates such as Au and Ag, while research on other substrates has yet to be developed, this makes SERS substrates have high limitations.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of the novel SERS substrate nano-semiconductor material comprises the following steps:

[0020] (1) Triethanolamine is an organic additive; the raw materials (ZrOCl 2 •8H 2 O) was 2.8700g, and 0.5 wt% ZnCl was added respectively 2 ;

[0021] (2) Then drain the glass rod of the solution in step (1) and add ammonia solution drop by drop, and a white precipitate will form; control the pH value to keep it at about 10 and filter it after the precipitation is complete, then repeatedly wash and filter with deionized water until Cl - ions are not present;

[0022] (3) Add the solution obtained after washing to step (2), which is a suspension in deionized water, adjust the pH value to 13 with ammonia solution, and adjust the volume to 20ml with deionized water. Add organic additives to the adjusted four groups of solutions respectively, in which the volume ratio of zirconium solution to dispersant is 50:1; add diethanolamine, place in a digitally contr...

Embodiment 2

[0026] The preparation method of the novel SERS substrate nano-semiconductor material comprises the following steps:

[0027] (1) Triethanolamine is an organic additive; the raw materials (ZrOCl 2 •8H 2 O) is 2.8700g, and add 1wt% ZnCl respectively 2 ;;

[0028] (2) Then drain the glass rod of the solution in step (1) and add ammonia solution drop by drop, and a white precipitate will form; control the pH value to keep it at about 10 and filter it after the precipitation is complete, then repeatedly wash and filter with deionized water until Cl - ions are not present;

[0029](3) Add to the solution in step (2) and add and wash the obtained solution, which is a suspension in deionized water, adjust the pH value to 11 with ammonia solution, and adjust the volume to 20ml with deionized water. Add organic additives to the adjusted four groups of solutions respectively, in which the volume ratio of zirconium solution to dispersant is 50:1; add triethanolamine, place in a digit...

Embodiment 3

[0033] The preparation method of the novel SERS substrate nano-semiconductor material comprises the following steps:

[0034] (1) Triethanolamine is an organic additive; the raw materials (ZrOCl 2 •8H 2 O) is 2.8700g, and add 3wt% ZnCl respectively 2 ;

[0035] (2) Then drain the glass rod of the solution in step (1) and add ammonia solution drop by drop, and a white precipitate will form; control the pH value to maintain at about 8 and filter after the precipitation is complete, then repeatedly wash and filter with deionized water until Cl - ions are not present;

[0036] (3) Add the solution obtained after washing to step (2), which is a suspension in deionized water, adjust the pH value to 11 with ammonia solution, and adjust the volume to 20ml with deionized water. Add organic additives to the adjusted four groups of solutions respectively, in which the volume ratio of zirconium solution to dispersant is 50:1; add triethanolamine, place in a digitally controlled ultras...

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Abstract

The invention discloses a preparation method of a novel surface-enhanced Raman spectroscopy (SERS) substrate, and belongs to the technical field of preparation of multifunctional nano materials. The invention aims to develop a nano material which can be used as a surface enhanced Raman spectrum substrate, and a preparation method for changing the microstructure of nano particles by adopting a metal ion doping technology. The method comprises the following steps: preparing ZrO2 nanoparticles doped with metal ions, carrying out surface modification on probe molecules, and examining the SERS performance of a substrate. A hydrothermal synthesis method is adopted, and the preparation process is simple; and the doping of the metal ions can improve the surface state of the substrate and can improve the SERS signal intensity. Compared with undoped ZrO2 nano particles, the metal ion doped ZrO2 nano particles prepared by adopting the preparation method disclosed by the invention have the advantage that the SERS signal is obviously improved. The substrate has high stability and good biocompatibility and is an environment-friendly green material, the SERS active substrate is expanded, and theapplication range of SERS molecular detection is widened.

Description

technical field [0001] The invention relates to the technical field of SERS substrate nanomaterials, in particular to the research of zinc-doped nano-zirconia as a SERS substrate. Background technique [0002] In 1974, Fleischman et al observed a strong Raman scattering signal on the surface of Ag electrode prepared by rough electrochemical method when pyridine was adsorbed. However, they are not quite aware of this phenomenon. They increased the surface area of ​​Ag by making the surface of the Ag electrode rougher, and simply believed that the Raman enhancement factor was due to the large number of pyridine molecules adsorbed on the larger surface area. The groups of Van Duyne and Creighton believed that the increase in surface area was not enough to lead to the enhancement of Raman signal, and they proposed that the surface area plays a crucial role in the enhancement mechanism of Raman. Typically, the Raman scattering intensity is enhanced when Raman-active molecules a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/65B82Y15/00B82Y40/00
CPCG01N21/658B82Y15/00B82Y40/00
Inventor 石秀敏张煜伊明悦
Owner CHANGCHUN UNIV OF TECH
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