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Electrochemical preparation method of phenylamine-4-aminosalicylic acid copolymer

A technology of aminosalicylic acid and copolymer, which is applied in electrolysis process, electrolysis components, electrolysis organic production, etc. It can solve the problems of reduced application potential range, limitation of electrochemical properties, loss of electrochemical activity, etc., and achieves wide application prospects , Wide application potential range, high purity effect

Active Publication Date: 2016-09-07
HUAWEI TEHCHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many defects: the electrochemical properties of polyaniline are strongly limited by the pH value; when the pH>4.0, polyaniline almost loses its electrochemical activity, so the applicable potential range also decreases with the increase of pH, etc.
These shortcomings limit the application of polyaniline in chemical power sources, electrocatalysis, metal anticorrosion and sensors, etc. Therefore, it is necessary to improve the dependence of polyaniline on pH value

Method used

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  • Electrochemical preparation method of phenylamine-4-aminosalicylic acid copolymer
  • Electrochemical preparation method of phenylamine-4-aminosalicylic acid copolymer
  • Electrochemical preparation method of phenylamine-4-aminosalicylic acid copolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Preparation of aniline-4-aminosalicylic acid copolymer:

[0018] (1) Preparation of electrolyte: preparation of 0.20mol dm -3 Aniline, 2.0mol·dm -3 Sulfuric acid and 0.02mol·dm -3 A mixed solution of 4-aminosalicylic acid.

[0019] (2) The configuration of the electrolytic cell: a three-electrode system is adopted, a bare glassy carbon electrode is used as the working electrode, a platinum sheet electrode with an area of ​​1cm×2cm is used as the auxiliary electrode, and a saturated calomel electrode is used as the reference electrode.

[0020] (3) Pretreatment of the working electrode: the glassy carbon electrode was polished with 0.3 μm alumina powder, cleaned with ultrapure water, and then moved into an ultrasonic water bath for cleaning for 10 minutes.

[0021] (4) Electrochemical preparation of the copolymer: the prepared electrolyte solution was added to a three-electrode electrolytic cell, and the copolymer was synthesized on the glassy carbon electrode by cycl...

Embodiment 2

[0025] The difference from Example 1 is that the scanning potential range is -0.2~1.15V. After comparison, it can be seen that the copolymer is synthesized better than Example 1 at -0.2~1.15V when the scanning potential range is -0.2~0.95V. and easier to generate.

Embodiment 3

[0027] Basically the same as Example 1, the difference is: the "2.0mol dm in Example 1 -3 Sulfuric acid" was changed to "1.5mol dm -3 Sulfuric acid ", result is similar to embodiment 1.

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Abstract

The invention relates to an electrochemical preparation method of a phenylamine-4-aminosalicylic acid copolymer. The following three electrode electrolytic cells are used: a glassy carbon electrode used as a working electrode, a platinum electrode used as an auxiliary electrode and a saturated calomel electrode used as a reference electrode; electrolyte is a mixed solution of 0.10-0.50 mol.dm-3 of phenylamine, 0.01-0.02 mol.dm-3 of 4-aminosalicylic acid and 1.50-2.50 mol.dm-3 of sulfuric acid; and electrolysis is carried out by a cyclic voltammetry, and an obtained electrolytic product is washed and dried to obtain the phenylamine-4-aminosalicylic acid copolymer. The phenylamine-4-aminosalicylic acid copolymer prepared by the method still has good electrochemical activity in a high-alkaline solution of which pH is 9.0-11.0. Moreover, the preparation method is convenient to control and easy to implement.

Description

technical field [0001] The invention relates to a copolymer and a preparation method thereof, in particular to an aniline derivative with electrochemical activity in a highly alkaline solution and an electrochemical preparation method thereof, belonging to the technical field of electrochemical synthesis. Background technique [0002] Conductive polymer is a new material with unique conductive mechanism and electrochromic properties. It has broad application prospects in chemically modified electrodes, sensors, batteries, electrochromic devices, and light-emitting diodes. Among many conductive polymers, polyaniline is one of the most valuable conductive polymers, because of its good oxidation resistance and stability, unique doping behavior and good electrochemical reversibility, while raw materials Easy to obtain, simple synthesis method. However, there are still many defects: for example, the electrochemical properties of polyaniline are strongly limited by the pH value; ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G73/02C25B3/00
CPCC08G73/0266C25B3/00
Inventor 陈传祥卢琳甘正洋刘吟秋
Owner HUAWEI TEHCHNOLOGIES CO LTD
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