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Method for preparing electro-adsorption component by virtue of self-assembly technology

A self-assembly technology and adsorption material technology, applied in the field of preparing electro-adsorption components by self-assembly technology, can solve problems such as unfavorable electric double layer, influence of desalination rate, etc.

Active Publication Date: 2014-08-13
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of the pore size of the micropores, the adsorbed ions will be superimposed when they are stored in the form of an electric double layer in the pore size, which is not conducive to the formation of the electric double layer, which will adversely affect the desalination rate.

Method used

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  • Method for preparing electro-adsorption component by virtue of self-assembly technology
  • Method for preparing electro-adsorption component by virtue of self-assembly technology
  • Method for preparing electro-adsorption component by virtue of self-assembly technology

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example 1

[0031] The technology of the present invention is used to assemble a new type of adsorption component and connect a power supply. The positive electrode of the power supply is connected to the side electrode assembled with the polycation layer, and the negative electrode of the power supply is connected to the side electrode assembled with the polyanion layer. First, use a large amount of deionized water to clean the entire component system to ensure the accuracy of the adsorption results. In the experiment, the electrosorption voltage was controlled at 1.2v, the adsorption temperature was controlled at 25°C, and the electrosorption desalination performance test was carried out. Sodium chloride solutions of different concentrations were selected, and the concentration gradient was set to 400, 800, 1600, 3200, 6400mg / L as the solution to be treated. The adsorption process was set to circulatory system adsorption. The results of electrosorption are shown in the following table: ...

example 2

[0034]The technology of the present invention is used to assemble a new type of adsorption component and connect a power supply. The positive electrode of the power supply is connected to the side electrode assembled with the polycation layer, and the negative electrode of the power supply is connected to the side electrode assembled with the polyanion layer. First, use a large amount of deionized water to clean the entire component system to ensure the accuracy of the adsorption results. In the experiment, the electrosorption voltage was controlled to increase to 1.6v, and the adsorption temperature was controlled to remain unchanged at 25°C, and the electrosorption desalination performance test was carried out. Sodium chloride solutions of different concentrations were selected, and the concentration gradient was set to 400, 800, 1600, 3200, 6400mg / L as the solution to be treated. The adsorption process was set to circulatory system adsorption. The results of electrosorption ...

example 3

[0037] The technology of the present invention is used to assemble a new type of adsorption component and connect a power supply. The positive electrode of the power supply is connected to the side electrode assembled with the polycation layer, and the negative electrode of the power supply is connected to the side electrode assembled with the polyanion layer. First, use a large amount of deionized water to clean the entire component system to ensure the accuracy of the adsorption results. In the experiment, the electrosorption voltage was controlled to be 1.2v, and the adsorption temperature was controlled to be 35°C, and the electrosorption desalination performance test was carried out. Sodium chloride solutions of different concentrations were selected, and the concentration gradient was set to 400, 800, 1600, 3200, 6400mg / L as the solution to be treated. The adsorption process was set to circulatory system adsorption. The results of electrosorption are shown in the followin...

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Abstract

The invention relates to a method for preparing an electro-adsorption component by virtue of a self-assembly technology. The preparation mechanism of the electro-adsorption component is shown in the figure, wherein the electro-adsorption component comprises an electrode substrate (1), an adsorption material (2) and long chain polymer ions (3) assembled on the surface of the adsorption material. By using the abundant functional groups of the adsorption material, a layer of very thin long chain polyelectrolyte film with homogeneous charge is uniformly assembled on the surface of a solid through a non-covalent function, two electrode plates respectively provided with a positive charge polyelectrolyte film and a negative charge polyelectrolyte film are respectively connected with the positive pole and negative pole of a power supply, when the electro-adsorption component is used in electric adsorption desalting experiments, the positive charge film and the negative charge film formed by polymer ions can permeate ions with opposite charge and repel the homogenous charge, so that the ion adsorption efficiency is greatly accelerated, and the electro-adsorption component shows strong desalting capacity. The electro-adsorption component has the advantages of very thin surface assembly layer, low cost, short technological process and the like, and has good industrial application prospect.

Description

technical field [0001] The invention relates to a method for preparing electro-adsorption components by self-assembly technology Background technique [0002] Capacitive Deionization Technology (CDT) is a brand-new electro-adsorption desalination method based on the principle of electric double layer capacitors for charge desalination and discharge regeneration. When an aqueous solution containing salt ions flows between two opposite electrodes with applied voltage, due to the action of the electric field, the cations move toward the cathode electrode, and the anions move toward the anode electrode, so that the salt ions in the aqueous solution are adsorbed on the adsorption material. The electric double layer is formed in the pores, thereby reducing the salt content in the aqueous solution, realizing the desalination and purification of water, and obtaining relatively pure water. Since only direct current is needed in the desalination process, the cycle regeneration of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/469
Inventor 孟庆函曹兵李纪涛潘凯
Owner BEIJING UNIV OF CHEM TECH
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