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

Preparation method of single-layer gold nano film and SERS (Surface Enhanced Raman Scattering) application

A gold nano, single-layer technology, applied in nanotechnology, nanotechnology, nanotechnology for sensing, etc., can solve the problems of insufficient density and uniformity of the gold nanoparticle array, poor quality, complicated operation, etc. The effect of uniformity, good stability and signal reproducibility, and simple operation

Pending Publication Date: 2022-06-24
CHINA JILIANG UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is complicated to operate and the preparation of gold nanoparticle arrays is not dense enough and the uniformity is not good

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
  • Preparation method of single-layer gold nano film and SERS (Surface Enhanced Raman Scattering) application
  • Preparation method of single-layer gold nano film and SERS (Surface Enhanced Raman Scattering) application
  • Preparation method of single-layer gold nano film and SERS (Surface Enhanced Raman Scattering) application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A preparation method and application of a single-layer gold nanofilm, comprising the following steps:

[0028] S1: Take 100 ml of 0.01% chloroauric acid aqueous solution and place it in a 250 ml three-necked round-bottomed flask, and heat it to boiling in a magnetically stirred water bath and oil bath;

[0029] S2: take 1 ml of 1% sodium citrate and add it to the above boiling solution, after the solution becomes wine red, continue to boil and heat for 15 minutes, naturally cool to room temperature, and the gold nano solution is prepared;

[0030] S3: Mix 9 ml of gold nano-solution in S2 with 9 ml of ultrapure water, centrifuge, and remove the supernatant;

[0031] S4: Move the precipitate in S3 to a 2 ml centrifuge tube, add 1 ml of 1% polyvinylpyrrolidone ethanol solution, shake it evenly and let it stand;

[0032] S5: Centrifuge the solution in S4 at 10,000 rpm for 7 minutes, remove the supernatant, and add 1 ml of ethanol for later use;

[0033] S6: In a 5 ml cent...

Embodiment 2

[0036] A preparation method and application of a single-layer gold nanofilm, comprising the following steps:

[0037] S1: Take 100 ml of 0.01% chloroauric acid aqueous solution and place it in a 250 ml three-necked round-bottomed flask, and heat it to boiling in a magnetically stirred water bath and oil bath;

[0038] S2: take 1.4 ml of 1% sodium citric acid and add it to the above boiling solution. After the solution becomes wine red, continue to boil and heat for 15 minutes, naturally cool to room temperature, and the gold nano solution is prepared;

[0039] S3: Mix 9 ml of gold nano-solution in S2 with 9 ml of ultrapure water, centrifuge, and remove the supernatant;

[0040] S4: Move the precipitate in S3 to a 2 ml centrifuge tube, add 1 ml of 1% polyvinylpyrrolidone ethanol solution, shake it evenly and let it stand;

[0041] S5: Centrifuge the solution in S4 at 10,000 rpm for 7 minutes, remove the supernatant, and add 1 ml of ethanol for later use;

[0042] S6: In a 5 m...

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 preparation method of a single-layer gold nano film and SERS (Surface Enhanced Raman Scattering) application, firstly, gold nano particles are prepared through classical chemical oxidation-reduction reaction, then polyvinylpyrrolidone is used for modification to enable the surfaces of the gold nano particles to have positive charges, and dichloromethane and normal hexane organic reagents are used for enabling the gold nano particles to automatically form the single-layer compact gold nano film. The prepared self-assembled single-layer gold nano film is easy to operate, the gold nano single-layer film which is uniform in particle size and densely arranged can be formed, diquat and paraquat can be directly detected, and the self-assembled single-layer gold nano film has good sensitivity, stability and signal reproducibility.

Description

technical field [0001] The invention belongs to the technical field of surface-enhanced Raman scattering spectroscopy, and in particular relates to a preparation method of a single-layer gold nano-film. Background technique [0002] Surface-enhanced Raman scattering (SERS) is a detection technology that amplifies the weak Raman signal of molecules to achieve single-molecule precision identification. It is widely used in the fields of biomedicine, materials and environmental monitoring. SERS is a promising spectroscopic tool with the advantages of high detection sensitivity, rapidity, narrow spectral peaks, simultaneous detection of multiple components, and fingerprint spectral characteristics. These advantages make SERS technology widely used in analytical chemistry, environmental detection, Biomedicine and food safety. [0003] Over the past few decades, scientists have aimed to design and fabricate SERS substrates with maximum enhancement and uniformity. At present, the ...

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): G01N21/65B82Y15/00B82Y40/00
CPCG01N21/658B82Y15/00B82Y40/00
Inventor 李小茗张秀斌徐宛冰
Owner CHINA JILIANG UNIV
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com