Screen printing electrode and application thereof

A technology of screen printing electrodes and electrodes is applied in the field of analytical instruments to achieve the effects of enhancing hydrophilicity, simple materials and high electrical conductivity.

Inactive Publication Date: 2011-04-13
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of ionic liquids to prepare screen-printed electrodes has not been reported yet.

Method used

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  • Screen printing electrode and application thereof
  • Screen printing electrode and application thereof
  • Screen printing electrode and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Take 1 mL of acetone and cyclohexanone and mix with each other, then add 0.02 g of cellulose acetate and stir until fully dissolved. Add 0.2 g of N-octylpyridine hexafluorophosphate and 0.8 g of graphite powder and stir until a homogeneous slurry is formed.

[0031] The slurry developed by the present invention can be printed by a common screen printing process.

[0032] For electrode printing, first print the electrode leads on the polyvinyl chloride substrate, after drying the substrate, print the working electrode with the above-mentioned prepared paste, and place it in an oven after printing. Then place it at room temperature to cool. Finally, an insulating layer is printed to make a screen-printed electrode.

[0033] The prepared screen-printed electrode was placed in 0.1M phosphate buffer (pH 7.0), and the electrode was subjected to cyclic voltammetry scanning in the potential range from -1.4V to 1.4V, such as figure 2 , it can be seen that the background nois...

Embodiment 2

[0040] Take 1 mL of acetone and cyclohexanone and mix with each other, then add 0.02 g of cellulose acetate and stir until fully dissolved. Add 0.4 g of N-octylpyridine hexafluorophosphate and 0.6 g of graphite powder and stir until a homogeneous slurry is formed.

[0041] For electrode printing, first print the electrode leads on the polyvinyl chloride substrate, after drying the substrate, print the working electrode with the above-mentioned prepared paste, and place it in an oven after printing. Then place it at room temperature to cool. Finally, an insulating layer is printed to make a screen-printed electrode.

Embodiment 3

[0043] Take 2mL of acetone solution, then add 0.02g of cellulose acetate, and stir until fully dissolved. Add 0.2 g of N-octylpyridine hexafluorophosphate and 0.8 g of graphite powder and stir until a homogeneous slurry is formed.

[0044] Other same example 2.

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Abstract

The invention discloses a method for preparing a screen printing electrode, which comprises the following steps of: (1) slurry preparation: adding cellulose acetate in a mixed solvent and agitating the solvent for dissolving the solvent adequately to form a mixed solution, adding an ionic liquid and a conductive material to the mixed solution after being mixed and agitating and dissolving the solution to form uniform slurry so as to form the screen printing slurry of the invention; and (2) electrode printing: taking and drying a substrate, first, printing the electrode lead, then printing the work electrode on the substrate with prepared screen printing slurry, heating and drying and cooling the work electrode, then printing an insulating layer above the work electrode with insulating slurry to prepare the screen printing electrode. The electrode prepared by the invention has advantages of excellent electrical conductivity, wide electrical chemical window, low background noise and excellent electrochemical reaction activity and can be used to detect dopamine.

Description

technical field [0001] The invention belongs to the technical field of analytical instruments, and relates to a preparation method of a screen printing electrode and an application of the electrode. Background technique [0002] Electrochemical sensors have the characteristics of high detection sensitivity, good selectivity and fast response, and have been widely used in the analysis and detection of medicine, clinical, industrial and food chemistry and other fields. As a kind of electrochemical sensor, screen printing electrode not only has the characteristics of simple manufacturing process, low price, easy miniaturization and integration, but also has excellent electrochemical characteristics such as low background noise, wide electrochemical window, repeatable Good performance, etc., all of which make screen printing electrodes have great development potential. [0003] The general production method of screen printing electrodes is to transfer carbon paste or silver pas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/30G01N27/48
Inventor 吴坚
Owner ZHEJIANG UNIV
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