Polyaniline and poly-p-aminophenol double-layer membrane as well as preparation method and application of polyaniline and poly-p-aminophenol double-layer membrane

Abstract

The invention discloses a polyaniline and poly-p-aminophenol double-layer membrane and a preparation method of the polyaniline and poly-p-aminophenol double-layer membrane. The preparation method comprises the steps of electrolyzing an aniline and poly-p-aminophenol mixed solution in an electrolytic tank consisting of a platinum electrode, i.e., synthesizing a layer of polyaniline film on the platinum electrode, and then electrolyzing the poly-p-aminophenol and sulfuric acid mixed solution by adopting the polyaniline decorated electrode as a working electrode to obtain an electrolytic product, namely the polyaniline and poly-p-aminophenol double-layer membrane. According to the preparation method, the polyaniline and poly-p-aminophenol double-layer membrane is synthesized for the first time, the double-layer membrane still can maintain good electrochemical activity in the electrolyte being pH 2.0 to pH 6.0, and has wider application prospect compared with the matrix polyaniline and the poly-p-aminophenol; moreover, the synthesis method is convenient to control and convenient to operate in real production, and an effective way is provided for improving the electrochemical activity of the conductive polymer. The double-layer membrane prepared by the method has an application value on an electrochemical sensor.

Description

technical field [0001] The invention relates to a double-layer film, in particular to a polyaniline-poly-p-aminophenol double-layer film and a preparation method thereof, as well as the application of the double-layer film in the technical field of hydrogen peroxide electrocatalyst preparation. Background technique [0002] Over the past few decades, the development and application of conductive polymers has increased significantly. Among conductive polymers, polyaniline has been the most widely studied and one of the most widely used conductive polymer materials. Because polyaniline has good stability, conductivity, electrochromism, corrosion resistance and other characteristics, it has become a research hotspot in the field of conductive polymers. It is used in secondary batteries, electrochromic devices, sensors, electrocatalysis, etc. All have extremely broad application prospects, and have become one of the most commercially valuable conductive polymers. [0003] Alth...

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Problems solved by technology

[0003] Although polyaniline has many excellent properties, there are still many problems to be solved: for example, the electrochemical properties of polyaniline are deeply limited by the pH value. When the pH>4.0, polyaniline almost loses its electrochemical activity, and its applicable potential range It also decreases with the increase of pH, etc. These shortcomings limit the application of polyaniline in chemical power supply, electrocatalysis, metal anticorrosion and biocatalysis.

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