Electrochemical sensor for detecting bisphenol A, and preparation method and application thereof

An electrochemical and sensor technology, applied in the field of electrochemical analysis, can solve the problems of expensive instruments, complicated and cumbersome processing procedures, and the need for professionals to operate the instrument, and achieve the effects of improving conductivity, increasing sensitivity, and high sensitivity

Inactive Publication Date: 2019-06-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the instruments used are relatively expensive, the sample pretreatment process is complicated and cumbersome, and the operation of the instrument requires professionals and a central laboratory, etc., which are limited in use.

Method used

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  • Electrochemical sensor for detecting bisphenol A, and preparation method and application thereof
  • Electrochemical sensor for detecting bisphenol A, and preparation method and application thereof
  • Electrochemical sensor for detecting bisphenol A, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Preparation of Ce-MOF-GO:

[0032] 3mg mL -1 The cerium-based metal-organic framework and 0.2mg mL -1 Graphene oxide was dispersed in water at the same time, and ultrasonically prepared to prepare a cerium-based metal-organic framework / graphene oxide composite dispersion, and then take 5 μL of the above-mentioned cerium-based metal-organic framework / graphene oxide composite dispersion and apply it on the surface of a glassy carbon electrode to prepare Ce-MOF-GO nanocomposite modified materials.

[0033] (2) Preparation of Ce-MOF-ERGO:

[0034]Use the method of electrochemical reduction to scan the cyclic voltammetry curve in 0.05mol / L PBS buffer solution (pH=5.0) for 10 circles, and generate graphene oxide into electroreduced graphene oxide, wherein the scanning range is -0.6V~-1.2 V, the scan rate is 0.02v / s. After rinsing the surface of the electrode with ultrapure water and drying at room temperature, the electrochemical sensor of the cerium-based metal-organ...

Embodiment 2

[0052] (1) Preparation of Ce-MOF-GO:

[0053] 0.5mg mL -1 The cerium-based metal-organic framework and 0.1mg mL -1 Graphene oxide is dispersed in water at the same time, and ultrasonically prepared to prepare a cerium-based metal-organic framework / graphene oxide composite dispersion, and then take 10 μL of the above-mentioned cerium-based metal-organic framework / graphene oxide composite dispersion and apply it on the surface of a glassy carbon electrode to prepare Ce-MOF-GO nanocomposite modified materials.

[0054] (2) Preparation of Ce-MOF-ERGO:

[0055]Use the method of electrochemical reduction to scan the cyclic voltammetry curve in 0.05mol / L PBS buffer solution (pH=5.0) for 10 circles, and generate graphene oxide into electroreduced graphene oxide, wherein the scanning range is -0.6V~-1.2 V, the scan rate is 0.02v / s. After rinsing the surface of the electrode with ultrapure water and drying at room temperature, the electrochemical sensor of the cerium-based metal-org...

Embodiment 3

[0058] (1) Preparation of Ce-MOF-GO:

[0059] 4mg mL -1 The cerium-based metal-organic framework and 0.5mg mL -1 Graphene oxide is dispersed in water at the same time, and ultrasonically prepared to prepare a cerium-based metal-organic framework / graphene oxide composite dispersion, and then take 2 μL of the above-mentioned cerium-based metal-organic framework / graphene oxide composite dispersion and apply it on the surface of a glassy carbon electrode to prepare Ce-MOF-GO nanocomposite modified materials.

[0060] (2) Preparation of Ce-MOF-ERGO:

[0061] Use the method of electrochemical reduction to scan the cyclic voltammetry curve in 0.05mol / L PBS buffer solution (pH=5.0) for 10 circles, and generate graphene oxide into electroreduced graphene oxide, wherein the scanning range is -0.6V~-1.2 V, the scan rate is 0.02v / s. After rinsing the surface of the electrode with ultrapure water and drying at room temperature, the electrochemical sensor of the cerium-based metal-organ...

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Abstract

The invention, which belongs to the technical field of electrochemical analysis, provides an electrochemical sensor for detecting bisphenol A, and a preparation method and application thereof. The electrochemical sensor comprises a working electrode, a reference electrode, a counter electrode and a supporting electrolyte solution. The working electrode is prepared by modifying cerium-based metal-based metal organic framework (Ce-MOF)/electrochemical graphene oxide (ERGO) composite material on the surface of a glassy carbon electrode. The supporting electrolyte solution contains cetyl trimethylammonium bromide. The reference electrode is an Ag/AgCl electrode. The counter electrode is a platinum wire electrode. On the basis of the electrochemical reduction method, the electrochemical sensoris prepared by modifying the cerium-based metal organic framework/electroreactive graphene oxide composite material on the surface of the glassy carbon electrode and can be used for detecting bisphenol A. The sensitivity and selectivity are high; the detection limit is low; and the response speed is fast.

Description

technical field [0001] The invention belongs to the technical field of electrochemical analysis, and relates to an electrochemical sensor for detecting bisphenol A, a preparation method and an application thereof. Background technique [0002] Bisphenol A (Bisphenol A, BPA) is also known as 2,2-bis(4-hydroxyphenyl)propane, and its molecular formula is C 15 h 16 o 2 , is an important raw material for the production of epoxy resin, polysulfone resin, polycarbonate, polyphenylene ether resin, unsaturated polyester resin and other polymer materials. It is widely used in plastic water bottles, plastic milk bottles, canned food and beverages. packaging, dental fillings, and hundreds of other everyday products. It is found in various environmental media such as lakes, rivers, sediments, and soils. Humans can ingest BPA through diet, dust inhalation and skin contact. Bisphenol A is a typical environmental hormone, which disrupts the normal operation of human endocrine function ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48
Inventor 王雪石亚茹武敏李梦佳
Owner DALIAN UNIV OF TECH
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