A kind of preparation method of polyaniline/n-doped graphitized carbon composite conductive film electrode

A technology of composite conductive film and graphitized carbon, which is applied in the direction of hybrid capacitor electrodes, chemical instruments and methods, carbon compounds, etc., can solve the problems of poor conductivity and electric adsorption performance, limit practical application, and low specific surface area, and achieve excellent Electrical conductivity, meeting the needs of modern industrial production, and the effect of high specific surface area

Active Publication Date: 2022-03-15
EAST CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the commonly used carbon electrode materials still have the disadvantages of high cost, low specific surface area, poor conductivity and electrosorption performance, which seriously limit their practical application in the field of uranium extraction from brine.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Example 1 (implemented according to the mass ratio of polyaniline and N-doped graphitized carbon to 1:0.3)

[0028] A kind of preparation method of polyaniline / N-doped graphitized carbon composite conductive film electrode, concrete steps are as follows:

[0029] (1) Preparation of N-doped graphitized carbon

[0030] a) Raw material pretreatment: washing sugarcane hawthorn to remove soluble impurities, drying at 80°C for 12 hours, and then grinding;

[0031] b) Pre-carbonization: add pretreated sugarcane hawthorn (about 20g) and 10mL sodium hydroxide solution (0.2mol / L) in a stainless steel reactor, and mix well to promote sugarcane hawthorn to fully absorb sodium hydroxide, and then Add 30mL of ammonium bicarbonate solution (0.5mol / L), stir well, then blow nitrogen into the reactor to fully replace the air in the reactor, then seal the reactor and stir at 260°C under a nitrogen atmosphere Heat pre-carbonization for 2 hours; after the pre-carbonization treatment is co...

Embodiment 2

[0037] Example 2 (implemented according to the mass ratio of polyaniline and N-doped graphitized carbon to 1:0.4)

[0038] A kind of preparation method of polyaniline / N-doped graphitized carbon composite conductive film electrode, concrete steps are as follows:

[0039] (1) Preparation of N-doped graphitized carbon

[0040] a) Raw material pretreatment: washing sugarcane hawthorn to remove soluble impurities, drying at 80°C for 12 hours, and then grinding;

[0041] b) Pre-carbonization: add pretreated sugarcane hawthorn (about 20g) and 10mL sodium hydroxide solution (0.2mol / L) in a stainless steel reactor, and mix well to promote sugarcane hawthorn to fully absorb sodium hydroxide, and then Add 30mL of ammonium bicarbonate solution (0.5mol / L), stir well, then blow nitrogen into the reactor to fully replace the air in the reactor, then seal the reactor and stir at 260°C under a nitrogen atmosphere Heat pre-carbonization for 2 hours; after the pre-carbonization treatment is co...

Embodiment 3

[0047] Example 3 (implemented according to the mass ratio of polyaniline and N-doped graphitized carbon to 1:0.5)

[0048] A kind of preparation method of polyaniline / N-doped graphitized carbon composite conductive film electrode, concrete steps are as follows:

[0049] (1) Preparation of N-doped graphitized carbon

[0050] a) Raw material pretreatment: washing sugarcane hawthorn to remove soluble impurities, drying at 80°C for 12 hours, and then grinding;

[0051] b) Pre-carbonization: add pretreated sugarcane hawthorn (about 20g) and 10mL sodium hydroxide solution (0.2mol / L) in a stainless steel reactor, and mix well to promote sugarcane hawthorn to fully absorb sodium hydroxide, and then Add 30mL of ammonium bicarbonate solution (0.5mol / L), stir well, then blow nitrogen into the reactor to fully replace the air in the reactor, then seal the reactor and stir at 260°C under a nitrogen atmosphere Heat pre-carbonization for 2 hours; after the pre-carbonization treatment is co...

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PUM

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Abstract

A preparation method of polyaniline / N-doped graphitized carbon composite conductive film electrode, using pretreated waste biomass sugarcane hawthorn as raw material, preparing N-doped graphite through alkali activation, N doping, pre-carbonization and high-temperature carbonization Carbonized carbon; then use N-doped graphitized carbon and conductive polymer (polyaniline) to compound to prepare polyaniline / N-doped graphitized carbon composite conductive film electrode, polyaniline / N-doped graphitized carbon composite conductive film electrode It has a high specific surface area, good electrical conductivity and chemical stability. When it is used to extract uranium from brine by electro-adsorption, it has a high extraction rate of uranium in brine and good adsorption selectivity, which can meet the needs of modern industrial production.

Description

technical field [0001] The invention relates to the technical field of preparation of functional materials, in particular to a method for preparing a polyaniline / N-doped graphitized carbon composite conductive film electrode. Background technique [0002] Seawater contains a large amount of uranium resources, but the uranium concentration in seawater is low (about 3ppm) and contains a large number of coexisting ions, which makes it difficult and economical to directly use seawater to extract uranium. The concentration of uranium in brine is hundreds of times that in seawater, so it is more practical to use brine to extract uranium, but the main problem faced by brine is the coexistence of ions (Na + 、K + , Mg 2+ ) concentration is high, which brings serious interference to the separation and enrichment of uranium in brine. [0003] The high-efficiency separation of uranium in brine can be achieved by electrosorption, which has the advantages of low energy consumption, low...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01G11/32
CPCC22B60/0252C22B3/20C01B32/205Y02P10/20
Inventor 周利民欧阳金波黄国林刘峙嵘
Owner EAST CHINA UNIV OF TECH
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