Method for preparing ferroferric oxide/ carbon nano tube composite material

A technology of ferroferric oxide and carbon nanotubes, applied in iron oxide/iron hydroxide, chemical instruments and methods, nanotechnology, etc., can solve the problem of uneven particle size of nano-Fe in the coating layer, and achieve synthesis process and Simple production equipment and uniform particle size

Inactive Publication Date: 2012-07-18
NORTHWESTERN POLYTECHNICAL UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the existing preparation method of ferroferric oxide / carbon nanotube composite material, the cladding nano-Fe 3 o 4 Insufficiency of uneven particle size, the invention provides a preparation method of ferric oxide / carbon nanotube composite material

Method used

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  • Method for preparing ferroferric oxide/ carbon nano tube composite material
  • Method for preparing ferroferric oxide/ carbon nano tube composite material
  • Method for preparing ferroferric oxide/ carbon nano tube composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Add 122.1 mg of carbon nanotubes into a polyvinyl alcohol solution (the mass ratio of carbon nanotubes to polyvinyl alcohol solution is 0.31), perform ultrasonic and stirring dispersion, and obtain a suspension solution of carbon nanotubes.

[0025] FeCl 2 and ferric salt FeCl 3 Make solutions with distilled water, ferrous salt FeCl 2 with ferric salt FeCl 3 The molar ratio is 1:2, and it is added to the suspension of carbon nanotubes and polyvinyl alcohol to obtain 2 , ferric salt FeCl 3 The mixed liquid with carbon nanotubes is ultrasonically dispersed.

[0026] Make a solution of sodium hydroxide with distilled water, sodium hydroxide and ferrous salt FeCl 2 The molar ratio is 8:1, will contain ferrous salt FeCl 2 , ferric salt FeCl 3 Mix the mixed droplets with carbon nanotubes with a solution containing sodium hydroxide, nitrogen protection during the mixing process, electromagnetic stirring under the reaction condition of 50°C, after 40 minutes o...

Embodiment 2

[0033] Example 2: 257.8 mg of carbon nanotubes were added to a polyvinyl alcohol solution (the mass ratio of carbon nanotubes to polyvinyl alcohol solution was 0.64), and dispersed by ultrasonication and stirring to obtain a suspension solution of carbon nanotubes.

[0034] Ferrous salt (NH 4 ) 2 Fe(SO 4 ) 2 and ferric salt FeCl 3 Make solutions with distilled water, ferrous salt (NH 4 ) 2 Fe(SO 4 ) 2 with ferric salt FeCl 3 The molar ratio is 1:1.85, and it is added to the suspension of carbon nanotubes and polyvinyl alcohol to obtain ferrous salt (NH 4 ) 2 Fe(SO 4 ) 2 , ferric salt FeCl 3 The mixed liquid with carbon nanotubes is ultrasonically dispersed.

[0035] Make a solution of sodium hydroxide with distilled water, sodium hydroxide and ferrous salt (NH 4 ) 2 Fe(SO 4 ) 2 The molar ratio is 10:1, will contain ferrous salt (NH 4 ) 2 Fe(SO 4 ) 2 , ferric salt FeCl 3 Mix the mixed droplets with carbon nanotubes with a solution containing sodium hydroxi...

Embodiment 3

[0038] Example 3: 409.4 mg of carbon nanotubes were added into a polyvinyl alcohol solution (the mass ratio of carbon nanotubes to polyvinyl alcohol solution was 1.02), and dispersed by ultrasonication and stirring to obtain a suspension solution of carbon nanotubes.

[0039] FeCl 2 and ferric salt FeCl 3 Make solutions with distilled water, ferrous salt FeCl 2 with ferric salt FeCl 3 The molar ratio is 1:1.7, and it is added to the suspension of carbon nanotubes and polyvinyl alcohol to obtain 2 , ferric salt FeCl 3 The mixed liquid with carbon nanotubes is ultrasonically dispersed.

[0040] Make a solution of sodium hydroxide with distilled water, sodium hydroxide and ferrous salt FeCl 2 The molar ratio is 12:1, will contain ferrous salt FeCl 2 , ferric salt FeCl 3 Mix the mixed droplets with carbon nanotubes with a solution containing sodium hydroxide, pass nitrogen protection during the mixing process, and stir electromagnetically under the reaction condition of 80°...

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Abstract

The invention discloses a method for preparing a ferroferric oxide/ carbon nano tube composite material, which is used for solving the technical problem that the nano Fe3O4 particle diameter of the coating prepared by the conventional method for preparing the ferroferric oxide/ carbon nano tube composite material is not uniform. According to the technical scheme, multi-wall carbon nano tubes, ammonium ferrous sulfate, ferric chloride and sodium hydroxide are used as raw materials, polyvinyl alcohol is used as a surfactant, the ferroferric oxide/ carbon nano tube magnetic nano composite material is obtained by adopting a reverse co-precipitation method, and nano Fe3O4 coatings with different particle diameters are obtained by changing the reaction temperature and the concentration of the reaction solution. The nano Fe3O4 particle diameter of the coating of the ferroferric oxide/ carbon nano tube composite material prepared by the method is uniform, the average nano particle diameter is less than 10 nanometers, and the synthesis process and the production equipment are simple.

Description

technical field [0001] The invention relates to a preparation method of a composite material, in particular to a preparation method of a ferric oxide / carbon nanotube composite material. Background technique [0002] Due to their unique structure and excellent electrical, mechanical and hydrogen storage properties, carbon nanotubes are widely used in many fields such as hydrogen storage materials, electrode materials, catalyst supports and composite materials. Magnetic nanomaterials combine the advantages of nanomaterials and magnetic materials, and the resulting new properties make them attract much attention as a special functional material. Coating carbon nanotubes with magnetic nanomaterials can show more excellent electrical, magnetic and wave-absorbing properties, and has become one of the hotspots of researchers in this field, and has broad application prospects in industrial and high-tech fields. [0003] There are many methods used to prepare ferroferric oxide / carbo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01G49/08B82Y30/00B82Y40/00H01F1/34C01B32/168
Inventor 李克智程三旭齐乐华李贺军童永煌
Owner NORTHWESTERN POLYTECHNICAL UNIV
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