Method for manufacturing composite Raman-enhanced substrate

A substrate and solution technology, which is applied in the field of preparation of composite Raman-enhanced substrates, can solve problems such as poor repeatability and stability, easy vulcanization and oxidation, and unstable chemical properties, and achieve excellent performance, enhanced stability, and enhanced Raman enhancement. performance effect

Active Publication Date: 2016-03-09
SHANGHAI NAT ENG RES CENT FORNANOTECH
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of nano-gold and silver colloidal particles has disadvantages such as poor repeatability and stability, while the use of silver thin films has good repeatability, but has the disadvantages of insufficient chemical stability and easy vulcanization and oxidation.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for manufacturing composite Raman-enhanced substrate
  • Method for manufacturing composite Raman-enhanced substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. A 30nm thick Ag discontinuous nano-film was prepared on a smooth substrate by magnetron sputtering;

[0021] 2. Prepare 20ml of K2PtCl4 solution with a concentration of 0.1mM and 20ml of C6H5Na3O7 solution with a concentration of 0.15mM, and stir thoroughly;

[0022] 3. Put the nano-Ag film substrate prepared in step 1 into the solution prepared in step 2, react at 90°C for 25 minutes, take out the substrate and wash it;

[0023] 4. Prepare 20ml of 10wt% hydrogen peroxide, put the substrate into it, stir and react for 8 minutes, take it out and wash it;

[0024] 5. Prepare 20ml of 0.2mM NaBH4 solution, put the substrate into it, stir and react for 6min, take it out and wash it.

[0025] The SEM image of the prepared composite Raman-enhanced substrate is shown in figure 1 , the substrate is used for 0.001mM rhodamine test, the performance diagram is as follows figure 2 shown.

Embodiment 2

[0027] 1. Prepare a 20 thick Ag discontinuous nano-film on a smooth substrate by magnetron sputtering;

[0028] 2. Prepare 20ml of K2PtCl4 solution with a concentration of 0.05mM and 20ml of C6H5Na3O7 solution with a concentration of 0.05mM, and stir thoroughly;

[0029] 3. Put the nano-Ag thin film substrate prepared in step 1 into the solution prepared in step 2, react at 90°C for 10 minutes, take out the substrate and wash it;

[0030] 4. Prepare 20ml of 10wt% hydrogen peroxide, put the substrate into it, stir for 5 minutes, take it out and wash it;

[0031] 5. Prepare 20ml of 0.2mM NaBH4 solution, put the substrate into it, stir and react for 5min, take it out and wash it.

Embodiment 3

[0033] 1. Prepare a 50nm thick Ag discontinuous nano-film on a smooth substrate by magnetron sputtering;

[0034] 2. Prepare 20ml of 0.5mM K2PtCl4 solution and 20ml of 1mM C6H5Na3O7 solution, and stir thoroughly;

[0035] 3. Put the nano-Ag film substrate prepared in step 1 into the solution prepared in step 2, react at 90°C for 30 minutes, take out the substrate and wash it;

[0036] 4. Prepare 20ml of 10wt% hydrogen peroxide, put the substrate into it, stir and react for 10min, take it out and wash it;

[0037] 5. Prepare 20ml of 0.2mM NaBH4 solution, put the substrate into it, stir and react for 10min, take it out and wash it.

[0038] The composite Raman-enhanced film substrate prepared in the above examples has a simple preparation process, excellent performance, good stability, and good practicability.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a method for manufacturing a composite Raman-enhanced substrate. An Ag non-continuous nano-film with the thickness ranging from 20 nm to 50 nm is prepared on a smooth substrate through magnetron sputtering; a potassium chloroplatinate (K2PtCl4) solution and a sodium citrate (C6H5Na3O7) solution are prepared; a nano-Ag film substrate is put into the solutions to react for 10 min to 30 min at the temperature of 90 DEG C, and the substrate is taken out to be cleaned; hydrogen peroxide is prepared, the substrate is put into the hydrogen peroxide to be subjected to a stirring reaction for 5 min to 10 min, and then the substrate is taken out and cleaned; and a sodium borohydride (NaBH4) solution is prepared, the substrate is put into the sodium borohydride (NaBH4) solution to be subjected to a stirring reaction for 5 min to 10 min, and then the substrate is taken out and cleaned. By the adoption of the method, the good Raman-enhanced effect is achieved; and the manufacturing process is simple, performance is excellent, and stability is good.

Description

technical field [0001] The invention belongs to the fields of nano film preparation, material chemistry and detection analysis, and relates to a preparation method of a composite Raman enhanced substrate. Background technique [0002] Raman scattering is a kind of scattering phenomenon of light. It is when the photon of monochromatic incident light interacts with the molecule to be measured, an inelastic collision occurs, energy exchange occurs between the photon and the molecule, and the photon changes the direction and frequency of motion. Raman scattering spectroscopy is a powerful molecular detection technique due to its specificity for molecular and chemical bond vibrational peaks. Due to the very small scattering cross-section of Raman scattering, Raman scattering is a very weak process, which is not conducive to the qualitative analysis of trace substances. Whether the scattering can be enhanced is the key to the practical use of Raman scattering spectroscopy detecti...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C23C28/02C23C14/35C23C18/44
CPCC23C14/35C23C18/44C23C28/028
Inventor 何丹农尹桂林卢静张彦鹏
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap