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Preparation method of magnetic nano compound material of cobalt-nickel ferrite/multi-wall carbon nano pipe

A technology of multi-walled carbon nanotubes and cobalt-nickel ferrite, applied in the preparation of microspheres, microcapsule preparations, etc., to achieve the effects of high magnetization, high sensitivity of magnetic induction, and simple process

Inactive Publication Date: 2012-02-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, there is no solvothermal synthesis of cobalt-nickel ferrite (Co 1-x Ni x Fe 2 o 4 ) / Multiwalled Carbon Nanotubes (MWCNTs) Magnetic Nanocomposites

Method used

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  • Preparation method of magnetic nano compound material of cobalt-nickel ferrite/multi-wall carbon nano pipe
  • Preparation method of magnetic nano compound material of cobalt-nickel ferrite/multi-wall carbon nano pipe
  • Preparation method of magnetic nano compound material of cobalt-nickel ferrite/multi-wall carbon nano pipe

Examples

Experimental program
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Effect test

Embodiment 1

[0029] Weigh 0.15g MWCNTs into a three-neck flask, then add 45ml (20mol / L) concentrated nitric acid, ultrasonically disperse for 30min, then raise the temperature to 100°C, and acidify for 30h. After the reaction, the carbon tube suspension was filtered, washed and dried to obtain MWCNTs after acidification treatment. Then weigh 2.0192g iron nitrate (Fe(NO3 ) 3 9H 2 O), 0.5821g cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O), 0.1454g nickel nitrate (Ni(NO 3 ) 2 ·6H 2 (2), add in the there-necked flask, add 45ml concentration again and be the MWCNTs of 98wt% ethylene glycol aqueous solution, acidification, ultrasonic dispersion 45min, after the ultrasonic dispersion finishes, then add 3.6g anhydrous sodium acetate, 1.2ml Polyethylene Glycol 200 , stirred for 45 minutes at a rotation speed of 500 rotations / min, and poured the above solution into a reaction kettle after complete dissolution, raised the temperature to 200° C., and reacted for 12 hours. After the reaction, the product...

Embodiment 2

[0031] Weigh 0.16g MWCNTs into a three-necked flask, then add 50ml (17mol / L) concentrated nitric acid, ultrasonically disperse for 40min, then raise the temperature to 120°C, and acidify for 18h. After the reaction, the carbon tube suspension was filtered, washed and dried to obtain MWCNTs after acidification treatment. Then weigh 2.0192g iron nitrate (Fe(NO 3 ) 3 9H 2 O), 0.4366g cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O), 0.2908g nickel nitrate (Ni(NO 3 ) 2 ·6H 2 (2), add in the there-necked flask, add 50ml concentration again and be the MWCNTs of 98wt% ethylene glycol aqueous solution, acidification, ultrasonic dispersion 45min, after ultrasonic dispersion finishes, then add 4.42g anhydrous sodium acetate, 1ml Polyethylene Glycol 200, Stir at 800 rpm for 20 min, pour the above solution into the reaction kettle after complete dissolution, raise the temperature to 210°C, and react for 10 h. After the reaction, the product was collected with a magnet, and the product was wa...

Embodiment 3

[0033] Weigh 0.14g MWCNTs into a three-necked flask, then add 55ml (16mol / L) concentrated nitric acid, ultrasonically disperse for 50min, then raise the temperature to 110°C, and acidify for 24h. After the reaction, the carbon tube suspension was filtered, washed and dried to obtain MWCNTs after acidification treatment. Then weigh 2.0192g iron nitrate (Fe(NO 3 ) 3 9H 2 O), 0.3638g cobalt nitrate (Co(NO 3 ) 2 ·6H 2 O), 0.3635g nickel nitrate (Ni(NO 3 ) 2 ·6H 2 (2), add in the there-necked flask, then add 55ml concentration and be 99wt% ethylene glycol aqueous solution, the MWCNTs of acidification, ultrasonic dispersion 50min, wait after ultrasonic dispersion ends, then add 4.62g anhydrous sodium acetate, 11ml Polyethylene Glycol 200, Stir for 40 minutes at a rotation speed of 600 rotations / min. After the solution is completely dissolved, pour the above solution into a reaction kettle, raise the temperature to 190° C., and react for 14 hours. After the reaction, the pro...

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Abstract

The invention relates to a preparation method of a magnetic nano compound material of a cobalt-nickel ferrite / multi-wall carbon nano pipe, which comprises the following steps of: (1) carrying out acidifying treatment on the surface of cobalt-nickel ferrite by using acid with strong oxidizing property; and (2) dispersing a multi-wall carbon nano pipe after the acid treatment into a glycol water solution at room temperature, then adding iron salt, cobalt salt and nickel salt and adding polyethylene glycol and anhydrous sodium acetate after completely dissolving so as to form reaction liquid; and putting the reaction liquid into a reaction kettle, heating to react for 8 to 16h, then cooling to the room temperature, collecting a product by using a magnet, then washing and finally drying so as to obtain the magnetic nano compound material of the cobalt-nickel ferrite / multi-wall carbon nano pipe. The preparation method disclosed by the invention is simple and is easy for industrialized production; and the prepared Col-xNixFe2O4 / MWCNTs magnetic nano compound material has pure crystalline phase, good dispersivity, smaller crystal grains and high magnetization intensity.

Description

technical field [0001] The invention belongs to the field of preparation of magnetic nano-composite materials, in particular to a method for preparing cobalt-nickel ferrite / multi-walled carbon nanotube magnetic nano-composite materials. Background technique [0002] Carbon nanotubes are one-dimensional nanocarbon materials with a variety of unique physical and chemical properties, and have broad application prospects in the fields of composite material enhancement, field emission, catalyst support, microsensors, scanning tunneling and atomic force microscope probes, hydrogen storage, etc. . Ferrite nanoparticles have received great attention in recent years because of their physical effects such as surface effect, small size effect, quantum size effect, and macroscopic quantum tunneling effect, as well as excellent magnetic properties. There are many dangling bonds on the surface of carbon nanotubes (that is, higher surface chemical activity) and relatively stable propertie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J13/02
Inventor 李耀刚唐亚王宏志张青红
Owner DONGHUA UNIV
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