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Method for preparing porous chemical electrode

An electrode and chemical technology, which is applied in the field of preparation of porous chemical electrodes, can solve the problems that hinder the practical application of biological analysis, the adhesive paraffin oil volatilizes and dries up, and the phase of the electrode is not tight, so as to achieve parallel reliability and good selectivity. Parallel reliability, good selectivity, and improved sensitivity

Active Publication Date: 2007-10-10
JIANGSU XINYE HEAVY IND +1
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Problems solved by technology

However, with the deepening of research, people also found that this kind of electrode has the disadvantages of poor reproducibility of results and unsuitable for long-term storage, which hinders its practical application in biological analysis.
The reasons may be as follows: (1) Each process of electrode preparation is not completely repeated and quantitative, and the surface properties of the electrode, such as specific surface area, the number of active sites for adsorption, etc., are not highly consistent; (2) the binder Volatilization and drying of paraffin oil, etc. lead to loose phase of the electrode body and failure
Although there are many reports on various modifications and modifications of electrodes, such as using epoxy resin or conductive glue as a binder, the overall phase properties of the electrode obtained are better than those obtained with paraffin oil as a binder, but it is not cannot fundamentally solve the existing problems

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  • Method for preparing porous chemical electrode
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Embodiment Construction

[0010] A preparation method of a porous chemical electrode, which is to clean the hollow glass tube, grind the precursor, the filler and the nano-microsphere template according to the mass ratio of 1-1.5:3-4.5:1-2, and mix them evenly to form a paste Fill the obtained carbon paste mixture into the hollow glass tube, compact it, insert the copper wire as the lead-out electrode in the center of the hollow glass tube, and then soak the electrode in the initiator solution with a concentration of 0.01-1.5mol / L at room temperature In the process, the paste mixture filled in the glass tube is aggregated as a whole, and finally the electrode is put into the stirring extractant, extracted in the temperature range of 5°C to 40°C, and the nano-microsphere template is removed. The above-mentioned precursors are pyrrole, One of thiophene and aniline or its derivative example; the filler is carbon powder or mica powder, and the nano-microsphere template is a polystyrene nano-microsphere temp...

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Abstract

A method for preparing porous chemical electrode includes grinding presoma of pyrrole and packing material as well as nano-microball template as per mass ratio of 1-1.5:3-4.5:1-2 and mixing them to be paste mixture, filling said paste mixture into hollow glass tube, inserting copper wire in said glass tube to lead electrode out, soaking electrode in initiator solution in concentration of 0.01-1.5moI / L for making said paste mixture be integral-polymerized then placing electrode into agitated extraction agent at temperature of 5-40deg.c for removing off nano-microball template.

Description

1. Technical field [0001] The invention belongs to the technical field of biosensor preparation, in particular to a preparation method of a porous chemical electrode. 2. Background technology [0002] Electrochemical biosensors are a class of sensors that directly or indirectly convert the specific binding between biomacromolecules into detectable electrical signals. The research on carbon paste electrodes began in the 1980s, and once aroused people's high attention, because its production method is particularly simple and the cost is particularly low, and it is considered to be an ideal method for preparing and using disposable electrodes. However, with the deepening of research, people also found that this kind of electrode has the disadvantages of poor reproducibility of results and not suitable for long-term storage, which hinders its practical application in biological analysis. The reasons may be as follows: (1) Each process of electrode preparation is not completely ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/36
Inventor 何农跃许利剑李智洋
Owner JIANGSU XINYE HEAVY IND
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