A kind of preparation method and application of graphene-polypyrrole-gold nanoparticle composite material

A technology of gold nanoparticles and composite materials, which is applied in the field of preparation of graphene-polypyrrole-gold nanoparticle composite materials, can solve the problems of easy aggregation and low chemical activity of gold nanoparticles on the surface, and achieve good biocompatibility , The process is simple, and the effect of increasing the load capacity

Active Publication Date: 2020-07-17
GUILIN UNIV OF ELECTRONIC TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It overcomes the problem that the chemical activity of graphene is not high, and the surface of gold nanoparticles is easy to agglomerate

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 kind of preparation method and application of graphene-polypyrrole-gold nanoparticle composite material
  • A kind of preparation method and application of graphene-polypyrrole-gold nanoparticle composite material
  • A kind of preparation method and application of graphene-polypyrrole-gold nanoparticle composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0026] A kind of preparation method of graphene-polypyrrole-gold nanoparticle composite material:

[0027] Step 1) Solution configuration, add 0.1 g and 1 g pyrrole solution into 100 mL aqueous solution, then add 1 g graphene into the solution, ultrasonically disperse for 1 h, denoted as solution M, add 2 g ammonium persulfate Dissolved in 10 mL of aqueous solution, recorded as solution N;

[0028] Step 2) Mixing reaction of the solution to prepare the polypyrrole-graphene composite material, slowly add the solution N described in step 1 to the solution M, and stir it with a magnetic stirrer, after the addition is completed, let the solution react 2 hours, then through filtering, washing, drying, the polypyrrole-graphene composite material that obtains;

[0029] Step 3) Preparation of the gold nanoparticle solution, adding 0.1 g of chloroauric acid into 100 mL of water, stirring, then adding 0.5 g of trisodium citrate, and then adding 0.1 g of NaBH for reduction to obtain the...

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 graphene-polypyrrole-gold nanoparticle composite material which is characterized in that a method combining in-situ chemical polymerization with electrostatic adsorption is adopted to load gold nanoparticles onto a graphene-polypyrrole composite material. The preparation method comprises the following steps: 1) configuration of a solution; 2) preparation of a polypyrrole-graphene nano-composite material by a mixed reaction of the solution; 3) preparation of a gold nanoparticle solution; 4) adsorption of the gold nanoparticles. The invention further discloses the application of the graphene-polypyrrole-gold nanoparticle composite material, and the composite material is applied to the modification of electrodes of an impedance type escherichia coli biosensor, wherea linear range of detection of the escherichia coli is 1*102-1*107 CFU / mL, and the minimum detection limit is 100 CFU / mL. The impedance type escherichia coli biosensor prepared by the invention has the advantages of simple operation, low cost, convenient use, high selectivity and the like, and thus has great potential application values in the fields of food safety, clinical analysis and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of graphene-based nanocomposite materials, in particular to a preparation method and application of graphene-polypyrrole-gold nanoparticle composite materials. Background technique [0002] Escherichia coli O157:H7 (Escherichia coli O157:H7) is an enterohemorrhagic Escherichia coli that is one of the causes of food poisoning. Infected people usually develop bloody diarrhea, especially in young children and the elderly, sometimes leading to kidney failure. Transmission is via the fecal-oral route, with many cases associated with eating undercooked or contaminated beef and pork, swimming, drinking contaminated water, and eating contaminated vegetables. Therefore, the rapid and accurate identification of foodborne E. coli O157:H7 is of great significance for preventing the spread of diseases. [0003] Existing traditional detection methods, such as PCR and ELISA, etc., although they can be dete...

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): G01N27/327G01N27/30
CPCG01N27/30G01N27/3278
Inventor 邹勇进梁靖向翠丽褚海亮邱树君孙立贤徐芬
Owner GUILIN UNIV OF ELECTRONIC TECH
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