Preparation of nickel-zine ferrite (Ni1-xZnxFe2O4) coated carbon nano-tube magnetic nano composite material

A technology of nickel-zinc ferrite and magnetic nanometers, which is applied in the field of preparation of magnetic carbon nanotube composite materials, and achieves the effects of good dispersion, simple production equipment requirements, and high magnetization strength

Inactive Publication Date: 2009-07-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] So far, no MWCNTs/Ni have been prepared by NiZn ferrite-coated carbon nano...

Method used

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  • Preparation of nickel-zine ferrite (Ni1-xZnxFe2O4) coated carbon nano-tube magnetic nano composite material
  • Preparation of nickel-zine ferrite (Ni1-xZnxFe2O4) coated carbon nano-tube magnetic nano composite material
  • Preparation of nickel-zine ferrite (Ni1-xZnxFe2O4) coated carbon nano-tube magnetic nano composite material

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Weigh 0.15g MWCNTs into a three-necked flask, then add 50ml (18mol / L) concentrated nitric acid, ultrasonically disperse for 40min, then raise the temperature to 100°C, and acidify for 24h. After the reaction, the carbon nanotube suspension is washed, centrifuged, and dried to obtain acidified MWCNTs. Then weigh 1.351g of ferric chloride, 0.372g of zinc nitrate hexahydrate, and 0.364g of nickel nitrate hexahydrate into a three-necked flask, then add 50ml of ethylene glycol, and then add the above-mentioned acidified MWCNTs, and ultrasonically disperse for 45 minutes. After the ultrasonic dispersion is completed, add 3.6g of anhydrous sodium acetate and 1.2ml of polyethylene glycol 200, and mechanically stir for 30 minutes at a rotation speed of 500 rpm. After the solution is completely dissolved, pour the above solution into the autoclave , the temperature was raised to 200°C, and the reaction was carried out for 10 hours. After the reaction, the product was washed with...

Embodiment 2

[0026] Weigh 0.1g MWCNTs into a three-necked flask, then add 60ml (15mol / L) concentrated sulfuric acid, ultrasonically disperse for 20min, then raise the temperature to 120°C, and acidify for 30h. After the reaction, the carbon nanotube suspension is washed, centrifuged, and dried to obtain acidified MWCNTs. Then weigh 1.351g of ferric chloride, 0.595g of zinc nitrate hexahydrate, and 0.1454g of nickel nitrate hexahydrate into a three-necked flask, then add 50ml of ethylene glycol, and then add the above-mentioned acidified MWCNTs, and ultrasonically disperse for 45 minutes. After the ultrasonic dispersion is completed, add 4.0g of anhydrous sodium acetate, 0.6ml of polyethylene glycol 500, and mechanically stir for 20min at a rotation speed of 500 rpm. After the solution is completely dissolved, pour the above solution into the reaction kettle , heated up to 190°C, and reacted for 11h. After the reaction, the product was washed with deionized water, collected by a magnet, an...

Embodiment 3

[0028] Weigh 0.12g MWCNTs into a three-necked flask, then add 45ml (16mol / L) concentrated nitric acid, ultrasonically disperse for 30min, then raise the temperature to 120°C, and acidify for 24h. After the reaction, the carbon nanotube suspension is washed, centrifuged, and dried to obtain acidified MWCNTs. Then weigh 1.351g of ferric chloride, 0.297g of zinc nitrate hexahydrate, and 0.4362g of nickel nitrate hexahydrate into a three-necked flask, then add 50ml of ethylene glycol, and then add the above-mentioned acidified MWCNTs, and ultrasonically disperse for 50 minutes. After the ultrasonic dispersion is completed, add 4.6g of anhydrous sodium acetate, 0.4ml of polyethylene glycol 800, and mechanically stir for 40min at a rotation speed of 600 rpm. After the solution is completely dissolved, pour the above solution into the reaction kettle , heated up to 210°C, and reacted for 9h. After the reaction, the product was washed with deionized water, collected by a magnet, and ...

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Abstract

The invention relates to a method for preparing magnetic nanometer composite material of a nickel-zinc ferrite (Ni1-xZnxFe2O4) wrapping carbon nano tube, which comprises the following steps: (1) weighing the carbon nano tube to put into a three-necked flask, adding strong oxidizing property acid, and performing ultrasonic dispersion; and (2) dispersing the carbon nano tube after the acidizing process inside glycol solution at a room temperature, weighing malysite, zinc salt and nickel salt to dissolve inside the solution, adding polyethyleneglycol after the mixture dissolves completely and sodium acetate anhydrous to be stirred mechanically, putting the mixture after complete dissolution inside a high pressure reaction kettle, cooling the kettle to the room temperature, washing and collecting products, and drying the products. The method has simple preparation technique, low requirement on the production equipment, and easy industrial production. The prepared magnetic nanometer composite material has pure crystalling phase, good dispersibility, poor agglomeration, high intensity of magnetization and high magnetic induction sensitivity.

Description

technical field [0001] The invention belongs to the field of preparation of magnetic carbon nanotube composite materials, in particular to nickel zinc ferrite (Ni 1-x Zn x Fe 2 o 4 ) A method for preparing a magnetic nanocomposite material coated with carbon nanotubes. Background technique [0002] Carbon nanotubes are the most characteristic one-dimensional materials in nanomaterials. Their length is micron-scale, diameter is nano-scale, and has a large aspect ratio. In addition, it also has unique mechanical, optical, electromagnetic, hydrogen storage and other properties. . As a new type of functional material, carbon nanotubes have broad application prospects due to their unique properties. It has been involved in many fields such as nanoelectronic devices, electrode materials, composite materials, catalyst supports, and hydrogen storage materials. The study of tube composites has become an extremely important application research direction of carbon nanotubes. The...

Claims

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Application Information

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IPC IPC(8): C01B31/02C04B35/30C04B35/52C04B35/626
Inventor 李耀刚张燕玲闫伟王宏志张青红朱美芳
Owner DONGHUA UNIV
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