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A preparation method of magnetic carbon nanotubes based on charge interaction

A magnetic carbon nanotube technology, applied in the field of nanomaterials, can solve the problems of energy consumption and complex preparation process, affecting the intrinsic characteristics of carbon nanotubes, and the performance of magnetic carbon nanotubes, so as to avoid energy consumption and complicated processes , easy operation and good performance

Active Publication Date: 2018-06-22
中领先进(南京)环境技术研究院有限公司
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Problems solved by technology

These methods have the disadvantages of energy consumption and complex preparation process due to the need for high temperature reaction.
In addition, after high temperature treatment of carbon nanotubes, the carbon arrangement will change due to high temperature, which will affect the intrinsic characteristics of carbon nanotubes, which will affect the performance of the prepared magnetic carbon nanotubes

Method used

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  • A preparation method of magnetic carbon nanotubes based on charge interaction
  • A preparation method of magnetic carbon nanotubes based on charge interaction
  • A preparation method of magnetic carbon nanotubes based on charge interaction

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preparation example Construction

[0026] A preparation method of magnetic carbon nanotubes based on charge interaction, based on the charge interaction between positively charged ferric iron tetroxide nanoparticles wrapped by cationic polyelectrolyte and negatively charged carbon nanotubes wrapped by anionic polyelectrolyte , the preparation method of the magnetic carbon nanotube obtained, the specific technical scheme is as follows:

[0027] (1) Preparation of cationic magnetic ferric ferric oxide nanoparticle solution: mix trivalent soluble aqueous solution with divalent soluble hydrochloric acid solution, and add the mixed solution dropwise to weak alkali aqueous solution to obtain black precipitate. The obtained precipitate is added to a stabilizer, and a cationic polyelectrolyte solution is added dropwise to obtain a cationic magnetic ferric oxide nanoparticle solution.

[0028] ⑵ preparation of magnetic carbon nanotubes. Add the carbon nanotubes and the prepared cationic magnetic ferric iron tetroxide n...

Embodiment

[0034] A method for preparing magnetic carbon nanotubes based on charge interaction, comprising the following steps:

[0035] ⑴Preparation of Cationic Magnetic Fe3O4 Nanoparticle Solution

[0036] The ferric chloride aqueous solution of 20 milliliters 1mol / L is mixed with the ferrous sulfate hydrochloric acid solution of 5 milliliters 2mol / L, and mixed solution is added dropwise in the 0.7mol / L ammoniacal liquor of 250 milliliters, obtains black precipitate, and obtained precipitate The compound is added in the tetramethyl ammonium hydroxide of 0.1mol / L, and dropwise adding 5 milliliters of mass fractions is 20% polydimethyl diallyl ammonium chloride solution, obtains cationic magnetic ferric iron tetroxide nanoparticle solution .

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Abstract

The invention relates to a method for preparing magnetic carbon nanotubes based on the charge effect. The method induces the steps that a cationic polyelectrolyte polydiallyldimethylammonium chloride is wrapped on self-made uniform nanoparticles, and ferroferric oxide nanoparticles with the surface carrying positive electricity are obtained; a cationic polyelectrolyte sodium polystyrenesulfonate is wrapped on carbon nanotubes, and carbon nanotubes with the surfaces carrying negative electricity are obtained; due to the charge effect of the surfaces of the ferroferric oxide nanoparticles and the carbon nanotubes, the ferroferric oxide with magnetism is tightly attracted by the carbon nanotubes, and the magnetic carbon nanotubes are obtained. The prepared magnetic carbon nanotubes are stable in structure, and under the condition of ultrasonic or intense mechanical stirring, the ferroferric oxide nanoparticles will not shed from the carbon nanotubes. According to the method, adopted preparation conditions are mild, operation is easy and convenient, and the defects of energy consumption, process complexity and the like caused by the adoption of high-temperature and high-pressure conditions are avoided; the prepared magnetic carbon nanotubes are good in performance, and the ferroferric oxide nanoparticles adhere to the carbon nanotubes uniformly.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, in particular to a method for preparing magnetic carbon nanotubes based on charge interaction. Background technique [0002] Magnetic carbon nanotubes have become a popular material in the field of materials because of their broad application prospects in the chemical industry, electronic packaging, and catalysis. [0003] The existing magnetic carbon nanotubes are usually prepared by co-precipitation or solvothermal method. For example, in the Chinese invention patent with application number 201510900193.0, "a method for preparing magnetic carbon nanotubes" is applied, which uses co-precipitation method to attach ferric iron tetroxide ions to carbon nanotubes; in the Chinese invention patent application number 201410351461.3, an application for "a carbon nanotube-based magnetic nanocomposite material and its preparation method" is carried out by solvothermal method Nanoparticles are...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/34H01F41/02
CPCH01F1/0072H01F1/344H01F41/02
Inventor 李保安杜春雨李玫韩磊郭红
Owner 中领先进(南京)环境技术研究院有限公司
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