Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Silver-poly dopamine-graphene-modified electrochemical sensor and preparation method thereof

A polydopamine and graphene technology, applied in the field of chemical analysis, can solve the problems of complex and expensive instruments, time-consuming and multi-sample processing processes, etc., to achieve the effects of environmental friendliness, no impact on physical health, and improved analysis speed

Inactive Publication Date: 2015-06-17
XINYANG NORMAL UNIVERSITY
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods either use complex and expensive instruments, require dedicated personnel to operate, or require time-consuming sample processing

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
  • Silver-poly dopamine-graphene-modified electrochemical sensor and preparation method thereof
  • Silver-poly dopamine-graphene-modified electrochemical sensor and preparation method thereof
  • Silver-poly dopamine-graphene-modified electrochemical sensor and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 As shown, the silver-polydopamine-graphene modified electrochemical sensor of the present invention includes a glassy carbon substrate 1, electrode leads 3, and an insulating layer 4, and the surface of the glassy carbon substrate 1 is coated with a silver-polydopamine-graphene composite film 2. Silver-polydopamine-graphene composite film 2 was obtained by ultrasonically dispersing 0.1-1 mg of silver-polydopamine-graphene composite in 1-10 mL of DMF.

[0040] The preparation method of the electrochemical sensor modified by above-mentioned silver-polydopamine-graphene comprises the following steps:

[0041] (1) Glassy carbon electrode pretreatment;

[0042] (2) Add the silver-polydopamine-graphene compound into dimethylformamide (DMF), and disperse it uniformly by ultrasonic to obtain the silver-polydopamine-graphene dispersion;

[0043] (3) The silver-polydopamine-graphene dispersion liquid was drop-coated on the surface of the pretreated glassy carb...

Embodiment 2

[0048] The preparation of silver-polydopamine-graphene composite comprises the following steps:

[0049](1) Ultrasonic disperse 100 mg of graphene in 100 mL of twice distilled water, then add 200 mg of dopamine and 120 mg of trishydroxymethylaminomethane, ultrasonicate the above mixture for 1 min in an ice-water bath, and stir at room temperature After 20 h, the obtained product was filtered, washed, and then dried in a vacuum oven at 60 °C to obtain a polydopamine-graphene composite.

[0050] (2) Add 25 mg polydopamine-graphene to 25 mL (1×10 -3 mol / L) AgNO 3 In aqueous solution, stirred at room temperature for 2 h, then the resulting mixture was filtered, washed, and dried in a vacuum oven at 60 °C to obtain a silver-polydopamine-graphene nanocomposite.

Embodiment 3

[0052] Transmission electron microscopy (TEM) of the silver-polydopamine-graphene nanocomposite.

[0053] figure 2 TEM image of graphene, graphene presents a typical sheet structure; image 3 For the TEM of silver-polydopamine-graphene nanocomposite, the graphene surface has Ag nano-attachment.

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 silver-poly dopamine-graphene-composite-modified electrochemical sensor which is mainly characterized in that a silver-poly dopamine-graphene composite membrane is coated on the surface of a glassy carbon electrode. A preparation method of the silver-poly dopamine-graphene-composite-modified electrochemical sensor includes: adding silver-poly dopamine-graphene into dimethylformamide for uniform dispersing so that silver-poly dopamine-graphene dispersion liquid is obtained, then coating the dispersion liquid on the surface of the glassy carbon electrode, and evaporating solvent to obtain the needed sensor. A silver-poly dopamine-graphene composite is prepared only by mixing reactants and stirring at the room temperature. The preparation method is simple, mild in reaction conditions and low in cost. The prepared electrochemical sensor has the advantages of high sensitivity, low detection limit and the like, and is capable of achieving rapid sensitivity determination of guanine and adenine, simple to operate, green and environment-friendly.

Description

technical field [0001] The invention belongs to the field of chemical analysis, in particular to a silver-polydopamine-graphene modified electrochemical sensor and a preparation method thereof. Background technique [0002] Guanine and adenine are important alkaloids and important components of DNA, which play important fundamental roles in the process of life. They play a significant role in regulating coronary artery and cerebral circulation, controlling blood flow, preventing arrhythmia, releasing neurotransmitters and regulating the activity of adenylate cyclase. By detecting the changes of guanine and adenine in the body, the degree of DNA damage can be predicted and the occurrence of certain diseases can be indicated. Therefore, it is of great significance for the determination of guanine and adenine. [0003] At present, the main methods for detecting guanine and adenine include high performance liquid chromatography, capillary electrophoresis, photometry, chemilumi...

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): G01N27/30
Inventor 刘彦明黄克靖吴莹莹
Owner XINYANG NORMAL UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com