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Based on tio 2 Fabrication method and application of light-induced enhanced Raman substrate of /ag nanoarray

A nano-array and Raman substrate technology, which is applied in nanotechnology, Raman scattering, nanotechnology, etc. for materials and surface science, can solve the limitations of expensive, expensive, and difficult to prepare excellent cyclic substrates and other issues to achieve the effect of realizing reusability, improving sensitivity and improving repeatability

Active Publication Date: 2021-04-06
HEFEI UNIV OF TECH
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Problems solved by technology

So far, SERS detection has mainly used noble metals (Au, Ag) as the detection substrate, which has great limitations and is expensive, and it is difficult to prepare a substrate with excellent circulation
The purpose of the present invention is to find a substrate that can replace the current mainstream precious metal substrate, thereby solving the problem of high cost, improving the repeated utilization rate, and realizing the purpose of actual detection

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  • Based on tio <sub>2</sub> Fabrication method and application of light-induced enhanced Raman substrate of /ag nanoarray
  • Based on tio <sub>2</sub> Fabrication method and application of light-induced enhanced Raman substrate of /ag nanoarray
  • Based on tio <sub>2</sub> Fabrication method and application of light-induced enhanced Raman substrate of /ag nanoarray

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[0042] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Apparently, the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0043] In this example, a TiO-based 2 / Ag nano-array light-induced enhanced Raman substrate preparation method and application, characterized in that: the preparation method includes the following steps:

[0044] 1. Titanium dioxide nano-array structure prepared by anodic oxidation method:

[0045]a. Pretreatment: Cut the titanium sheet into pieces of equal s...

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Abstract

The invention relates to the field of Raman spectroscopic analysis, in particular to a TiO-based 2 / Ag nano-array light-induced enhanced Raman substrate preparation method and application, using a semiconductor noble metal composite substrate, using the photo-induced properties of the semiconductor to enhance the SERS performance of the substrate, and using the photocatalytic properties of the semiconductor to degrade the probe molecules to realize the substrate In addition, compounding a layer of graphene on the substrate improves the repeatability of the substrate, enhances the SERS performance of the substrate, and realizes the reusability of the substrate. The three-dimensional porous nanoarray structure does not increase the overall area. In the case of expanding the area of ​​the SERS active substrate, in addition, laser excitation and Raman scattering have a certain penetration depth, and the three-dimensional structure can increase the volume of interaction between the laser and the sample without increasing the size of the SERS substrate or the laser intensity. The invention improves the sensitivity of the SERS substrate and provides a good way for future biological detection.

Description

technical field [0001] The invention relates to the field of Raman spectroscopic analysis, in particular to a TiO-based 2 Preparation method and application of light-induced enhanced Raman substrate of / Ag nano-array. Background technique [0002] Surface-enhanced Raman spectroscopy (SERS), as a powerful and versatile new analysis tool, can be used for single-molecule detection or multi-molecule tracking due to its superior sensitivity. The preparation of SERS substrates has always been a hot spot in SERS research. Factors such as substrate material selection and surface morphology can significantly affect the signal intensity and repeatability of the spectrum, which determines the application of SERS detection method in real life. The main principle of preparing SERS substrates is to improve sensitivity, stability and repeatability, and reduce costs and be environmentally friendly. In recent years, reusable SERS substrates have been the goal that experimenters have been p...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D11/26C23C28/00C23C18/42C01G23/053C01B32/198G01N21/65B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00C01G23/053C23C18/42C23C28/322C23C28/3455C25D11/26C01B32/198G01N21/658
Inventor 张茂峰陈吞
Owner HEFEI UNIV OF TECH
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