Unlock instant, AI-driven research and patent intelligence for your innovation.

A method for preparing surface-enhanced infrared spectroscopic silver substrate

An infrared spectroscopy and surface enhancement technology, applied in the field of surface enhanced infrared spectroscopy, can solve the problems of affecting the test results of surface enhanced infrared spectroscopy, the enhancement effect is not significant, and the substrate preparation cost is high, and achieves significant enhancement effect, low equipment requirements, and manufacturing costs. low effect

Inactive Publication Date: 2016-02-03
SUZHOU UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the existing nanoparticles that constitute the substrate are prepared by sol-gel and other methods in the solution, and organic matter as a stabilizer is needed in the process. The organic matter will affect the surface-enhanced infrared spectroscopy test results, and the preparation cost of the existing substrate is high. , the enhancement effect is not significant

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
  • A method for preparing surface-enhanced infrared spectroscopic silver substrate
  • A method for preparing surface-enhanced infrared spectroscopic silver substrate
  • A method for preparing surface-enhanced infrared spectroscopic silver substrate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of Surface Enhanced Infrared Spectroscopy Silver Substrate

[0030] Clean the surface of the copper sheet first, and roughen the cleaned copper sheet in concentrated nitric acid for 5 seconds; soak the roughened copper sheet in 6M hydrochloric acid for 10 minutes, and then clean it with ultrapure water; the copper sheet treated with hydrochloric acid The chip is put into 15mM silver nitrate solution, copper and silver ions undergo substitution reaction, the reaction time is about 30 minutes, then cleaned with ultrapure water, and then dried with nitrogen, so that the surface enhanced infrared spectrum silver substrate is obtained.

[0031] attached figure 1 It is the TEM picture of the above surface-enhanced infrared spectrum silver substrate. It can be seen that the silver aggregates on the substrate are in the shape of pine dendrites, including pine needles and branches. The size of the branches is on the order of microns, and the gaps between ...

Embodiment 2

[0033] Example 2: Preparation of Surface Enhanced Infrared Spectroscopy Silver Substrate

[0034] Clean the surface of the copper sheet first, and roughen the cleaned copper sheet in concentrated nitric acid for 10 seconds; then wash it with ultrapure water; put the roughened copper sheet into 15mM silver nitrate solution, and the copper and silver ions will Replacement reaction, the reaction time is about 60 minutes, then washed with ultrapure water, and then dried with nitrogen, so as to obtain the surface-enhanced infrared spectrum silver substrate.

[0035] Put the above surface-enhanced infrared spectrum silver substrate into 1mM ethanol solution of p-mercaptopyridine (MPy) and soak for 6 hours; use the silver substrate adsorbed with MPy to measure the reflection infrared spectrum of MPy, the test results are shown in the attached Figure 4 , it can be seen that the characteristic peaks of MPy are significantly enhanced.

Embodiment 3

[0036] Example 3: Preparation of Surface Enhanced Infrared Spectroscopy Silver Substrate

[0037] Clean the surface of the copper sheet first, and roughen the cleaned copper sheet in concentrated nitric acid for 5 seconds; soak the roughened copper sheet in 6M hydrochloric acid for 10 minutes, and then clean it with ultrapure water; the copper sheet treated with hydrochloric acid Put the chip into 15mM silver nitrate solution, copper and silver ions undergo substitution reaction, the reaction time is about 40 minutes, then wash with ultra-pure water, and then dry with nitrogen, so that the silver substrate for surface-enhanced infrared spectroscopy is obtained.

[0038] Put the above-mentioned surface-enhanced infrared spectrum silver substrate into 1mM methylene blue (MB) ethanol solution and soak for 6 hours; use the silver substrate adsorbed with MB to measure the reflection infrared spectrum of MB, the test results are shown in the appendix Figure 5 , it can be seen that ...

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 discloses a method for preparing a silver substrate for surface-enhanced infrared radiation spectroscopy. The special reaction process of the method comprises the following steps: putting a roughed copper piece into a silver nitrate solution; adhering silver to the surface of the copper piece through replacement reaction of copper and silver ions, so as to form the silver substrate for surface-enhanced infrared radiation spectroscopy. No organic matters are used in a preparation process. The prepared substrate is pure and has no impurity, so as to avoid the phenomenon that the organic matters in the existing substrate interferes an infrared test result; the prepared silver substrate has an obvious reinforcement effect; the substrate has the advantages of good repeatability and high sensitivity; furthermore, in the preparation method, raw materials can be easily obtained; all the reactions are carried out at a room temperature; the preparation method has the advantages of mild reaction conditions, short reaction time, low equipment requirements, very low manufacturing cost; the preparation method is applicable to industrial production.

Description

technical field [0001] The invention belongs to the technical field of surface-enhanced infrared spectroscopy, and in particular relates to a method for preparing a silver substrate for surface-enhanced infrared spectroscopy. Background technique [0002] Infrared spectroscopy, like Raman spectroscopy, belongs to molecular vibration spectroscopy, which can reflect the characteristic structure of molecules. However, the Raman scattering effect is a very weak process, and generally its light intensity is only about 10 of the incident light intensity. -10 , so the Raman signals are very weak, and some kind of enhancement effect is almost always used in the Raman spectroscopy study of surface adsorbed species. Although the research based on surface-enhanced Raman spectroscopy can provide structural information, it can only give information on the structural changes of molecular groups due to the limitation of resonance conditions. Infrared spectroscopy can provide the vibratio...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/42G01N21/3563G01N21/65
Inventor 郑军伟闫月荣马娟周群李晓伟张艳青李双双褚文娅赵伟
Owner SUZHOU UNIV