Preparation method of electrochemical sensor for dissolved oxygen detection

A dissolved oxygen detection and electrochemical technology, which is applied in the direction of scientific instruments, instruments, measuring devices, etc., can solve the problems of not being very clear and the detection efficiency needs to be improved, so as to achieve the reduction of polarization voltage, the detection results are consistent, and the detection results are very Effect

Inactive Publication Date: 2012-08-22
WUXI BAILING SENSING TECH
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Problems solved by technology

[0004] The current detection methods for solvent oxygen are not very clear about the detailed mechanism of the catalytic process, and the detection efficiency needs to be improved.

Method used

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Embodiment Construction

[0014] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with implementation.

[0015] A method for preparing an electrochemical sensor for dissolved oxygen detection, the steps are as follows:

[0016] (1) Preparation of salen ligand: 0.284mol of salicylaldehyde (o-hydroxybenzaldehyde) is dissolved into 50ml of ethanol to form solution A; 0.142mol of ethylenediamine is dissolved into 25ml of ethanol to form solution B; then the solution A and solution B are mixed to form a mixed solution, and the formed mixed solution is stirred and refluxed at 40°C for 2 hours to obtain a yellow solid precipitate, which is filtered out, washed with ethanol, and then recrystallized with methanol to obtain the Salen ligand. Ligands are stored in vacuum;

[0017] (2) Preparation of nickel-salen complex: the Salen ligand of 6.4mol is dissolved in the ethanol solution of 50ml to form solution C, the nickel acetate ...

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Abstract

The invention relates to a preparation method of an electrochemical sensor for dissolved oxygen detection, comprising the following steps of: firstly, preparing a salen ligand; then dissolving 6.4 mol of the salen ligand into 50 ml of an ethanol solution to form a solution C; dissolving 6.4 mol of nickel acetate into 50 mol of the ethanol solution to form a solution D; gradually dripping the solution C into the solution D to form a mixed solution; drying, precipitating and filtering to obtain a nickel-salen ligand; and finally, carrying out electro-polymerization on the nickel-salen ligand on a platinum electrode with the area of 0.071 cmW so as to obtain the electrochemical sensor. The electrochemical sensor for the dissolved oxygen detection prepared by the invention has high flexibility and stability, and has a better application value.

Description

Technical field: [0001] The invention relates to a method for preparing an electrochemical sensor, in particular to a method for preparing an electrochemical sensor for dissolved oxygen detection. Background technique: [0002] In recent years, oxygen reduction has shown great importance in theoretical and practical applications of many biological processes and chemical synthesis. One of the most interesting is the study of catalytic processes for multi-electron oxygen reduction applied to biological reactions and fuel cells. Since the oxygen reduction process involves multiple electron transfer and there is an important activation energy barrier, electrocatalytic materials such as platinum, gold, metal oxides, organics, transition metal ring complexes, biological enzymes, etc., are used for electrochemical reduction Oxygen has been extensively studied, but current experiments using artificial catalysis to study oxygen reduction have been inefficient and not remarkably succ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/327
Inventor 孙京华潘正海
Owner WUXI BAILING SENSING TECH
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