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

An electrochemical sensor and its preparation and application

An electrochemical and sensor technology, applied in the field of electrochemical sensors and their preparation, can solve problems such as poor electrochemical reduction peak shape, human health hazards, carcinogenicity, teratogenicity and mutagenicity, etc. The effect of low cost and simple equipment

Active Publication Date: 2021-09-28
SOUTH CHINA NORMAL UNIVERSITY
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Trichloroacetic acid will not only affect the environment, but also cause serious harm to human health. The harm of trichloroacetic acid to the human body mainly includes its carcinogenicity, teratogenicity and mutagenicity, which can induce liver peroxidase body proliferation, increased risk of adenoma and hepatocellular carcinoma
During the research process, it was found that silver nanoparticles have a good catalytic effect on the electrochemical reduction of organic chlorine pollutants, but when using silver nanoparticles modified electrode to detect trichloroacetic acid, the electrochemical reduction peak shape is poor, and the peak current signal is difficult to collect , it is difficult to practically apply silver nanoparticles to detect the content of trichloroacetic acid

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
  • An electrochemical sensor and its preparation and application
  • An electrochemical sensor and its preparation and application
  • An electrochemical sensor and its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] see figure 1 , which is a flow chart of the preparation of the working electrode in the electrochemical sensor of the present invention. Wherein, the working electrode obtains a silver nanoparticle / polythionine / three-dimensional porous carbon ternary composite material by sequentially compounding three-dimensional porous carbon, polythionine and silver nanoparticles outside the base electrode, constituting the electrochemical sensor of the present invention, Specifically, it includes the following four steps:

[0042] S1. Preparation of base electrode:

[0043] A glassy carbon electrode is selected as the main body of the base electrode, the diameter of the glassy carbon electrode is 2 mm, and a polished fluff pad and 0.05 μm Al 2 o 3 The polishing powder is used to polish the glassy carbon electrode. After the polishing treatment, ultrapure water is used for rinsing, and ethanol and deionized water are used for ultrasonic cleaning treatment in sequence. The process...

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

PropertyMeasurementUnit
concentrationaaaaaaaaaa
Login to View More

Abstract

The invention provides an electrochemical sensor, comprising a working electrode, an auxiliary electrode and a reference electrode, wherein the working electrode comprises a base electrode, a three-dimensional porous carbon coating, a polythionine coating and silver nanoparticles, and the three-dimensional porous carbon A coating is wrapped on the outer surface of the base electrode, the polythionine coating is wrapped on the outer surface of the three-dimensional porous carbon coating, the silver nanoparticles are wrapped on the outer surface of the polythionine coating, Formation of silver nanoparticles / polythionine / three-dimensional porous carbon modified electrodes. The invention also provides a method for preparing the electrochemical sensor and an electrochemical detection method. The silver nanoparticle / polythionine / three-dimensional porous carbon modified electrode of the present invention can be used as an electrochemical sensor, has the advantages of simple operation and low test cost, and can realize specific detection of trichloroacetic acid, and the detection sensitivity is high, and the detection The limit is low, the accuracy of the detection result is high, and the selectivity is good.

Description

technical field [0001] The invention relates to the field of chemical analysis and detection, in particular to an electrochemical sensor and its preparation method and application. Background technique [0002] Trichloroacetic acid (TCA), also known as trichloroacetic acid, is an important organic chlorine pollutant. Because it is very soluble in water, TCA widely exists in water bodies. Trichloroacetic acid will not only affect the environment, but also cause serious harm to human health. The harm of trichloroacetic acid to the human body mainly includes its carcinogenicity, teratogenicity and mutagenicity, which can induce liver peroxidase Body proliferation, increased risk of adenoma and hepatocellular carcinoma. Therefore, it is extremely important to detect the concentration of trichloroacetic acid in water, and it is urgent to develop a simple, fast and sensitive method to detect the content of trichloroacetic acid. [0003] In the prior art, gas chromatography and l...

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): G01N27/48G01N27/30
CPCG01N27/30G01N27/48
Inventor 郭慢丽冯也雷艳明王福越王露雨
Owner SOUTH CHINA 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