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Preparation method of MnFe2O4 nano magnetic material

A nano-magnetic material, mnfe2o4 technology, applied in the direction of nanotechnology, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of inability to prepare microstructures, and achieve the effects of good dispersion, simple process, and controllable size

Inactive Publication Date: 2016-10-05
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the invention is to provide a kind of MnFe 2 o 4 A preparation method for nano-magnetic materials, to solve the problem that prior art preparation methods cannot prepare MnFe with symmetrical microstructure 2 o 4 The problem with nanomaterials

Method used

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  • Preparation method of MnFe2O4 nano magnetic material
  • Preparation method of MnFe2O4 nano magnetic material
  • Preparation method of MnFe2O4 nano magnetic material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0048] Example 1: Three-degree symmetric MnFe 2 o 4 Preparation of Nanomaterials

[0049] According to the molar ratio of manganese: iron element is 1:2, weigh 0.8678g of divalent acetylacetonate manganese salt and 2.3965g of trivalent acetylacetonate iron salt sample and dissolve them in 100ml of dibenzyl ether organic solvent. At the same time, add 20ml of oleylamine, Oleic acid, magnetically stirred at 30°C for 30mins to fully dissolve the acetylacetonate in the organic solvent, then raised the temperature to 120°C for 15 minutes, then raised the temperature to 200°C for 2 hours, and finally raised the temperature to 290°C for 1 hour, removed the heating device, and cooled naturally to room temperature, add an appropriate amount of alcohol to wash until the solution is completely clear, and dry to obtain a three-degree symmetrical MnFe 2 o 4 Nanoparticle samples.

Embodiment 2

[0050] Embodiment 2, four-degree symmetric MnFe 2 o 4 Preparation of Nanomaterials

[0051] According to the molar ratio of manganese: iron element is 1:2, weigh 0.8678g of divalent acetylacetonate manganese salt and 2.3965g of trivalent acetylacetonate iron salt sample and dissolve them in 100ml of dibenzyl ether organic solvent. At the same time, add 20ml of oleylamine, Oleic acid, magnetic stirring at 30°C for 30mins to fully dissolve the acetylacetonate in the organic solvent, then raise the temperature to 140°C, remove the heat source, naturally cool down to 120°C for 15 minutes, then raise the temperature to 200°C for 2 hours, and finally raise the temperature to 290°C Constant temperature for 1h, remove the heating device, cool to room temperature naturally, add appropriate amount of alcohol to wash until the solution is completely clear, and dry to obtain four-degree symmetrical MnFe 2 o 4 Nanoparticle samples.

Embodiment 3

[0052] Example 3: Four-degree symmetric MnFe 2 o 4 Preparation of Nanomaterials

[0053] According to the molar ratio of manganese: iron element is 1:2, weigh 0.8678g of divalent acetylacetonate manganese salt and 2.3965g of trivalent acetylacetonate iron salt sample and dissolve them in 100ml of dibenzyl ether organic solvent. At the same time, add 20ml of oleylamine, Oleic acid, magnetic stirring at 30°C for 30 minutes to fully dissolve the acetylacetonate salt in the organic solvent, then raise the temperature to 150°C, remove the heat source, naturally cool down to 120°C for 15 minutes, then raise the temperature to 200°C for 2 hours, and finally raise the temperature to 290°C Constant temperature for 1h, remove the heating device, cool to room temperature naturally, add appropriate amount of alcohol to wash until the solution is completely clear, and dry to obtain four-degree symmetrical MnFe 2 o 4 Nanoparticle samples.

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Abstract

The invention discloses a preparation method of a MnFe2O4 nano magnetic material. The preparation method comprises the following steps: weighing a manganous salt sample and a ferrite sample according to a specific amount; taking dibenzyl ether as a solvent, adding oleylamine and oleic acid to form mixed liquid, and heating the mixed liquid to obtain a MnFe2O4 nano magnetic material which has a symmetrical structure microscopically, wherein a heating process is carried out under protection of N2 atmosphere; and selecting suitable heating parameters to obtain three-dimensionally symmetric, four-dimensionally symmetric, six-dimensionally symmetric and diamond-shaped symmetric MnFe2O4 nano magnetic materials. The invention provides the preparation method of the MnFe2O4 nano magnetic material. The prepared MnFe2O4 nano magnetic material has good symmetry; the grain size of the MnFe2O4 nano magnetic material is about 50 nanometers; the size of the MnFe2O4 nano magnetic material is close to the size of protein and the size of virus; and the dispersibility is good.

Description

technical field [0001] The present invention relates to MnFe 2 o 4 The field of preparation methods of nanomaterials, specifically a kind of MnFe with three-degree symmetry, four-degree symmetry, six-degree symmetry, and rhombus symmetry 2 o 4 Preparation method of nano magnetic material. Background technique [0002] Spinel Ferrite MnFe 2 o 4 Due to its excellent physical and chemical properties, it is widely used in microwave absorption, electromagnetic devices and other fields. In particular, nanoscale MnFe 2 o 4 After surface modification or functionalization, its applications in magnetic resonance imaging, photocatalysis, lithium batteries, supercapacitors, targeted drug delivery, and the adsorption of harmful substances have been expanded. [0003] The morphology and size of magnetic nanoparticles have a significant impact on the magnetic properties. So far, the reported MnFe 2 o 4 The morphology of the particles is spherical, cubic, and hexagonal; with the ...

Claims

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Application Information

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IPC IPC(8): C01G49/00B82Y40/00
CPCC01G49/0072C01P2002/72C01P2004/04C01P2004/24C01P2004/64C01P2006/42
Inventor 马永青徐士涛黄松耿冰倩孙潇
Owner ANHUI UNIVERSITY
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