Preparation method of electrochemical sensor for dissolved oxygen detection

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...

AI Technical Summary

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.