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Preparation method of water-soluble ferroferric oxide nano-magnetic fluid

A technology of ferroferric oxide and nano-magnetic fluid, which is applied in the direction of nano-magnetism, iron oxide/iron hydroxide, nanotechnology, etc., can solve the problems of complex organic coating or modification process, and achieve easy control of the preparation process and preparation Simple process and high stability

Active Publication Date: 2014-07-16
ANHUI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the preparation of magnetic fluid is generally divided into two steps at present. First, the preparation of magnetic nanoparticles is carried out, and then the nanoparticles are organically coated or modified. During the preparation of magnetic particles, nitrogen protection is often required, and the organic coating or modification process is relatively complex

Method used

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  • Preparation method of water-soluble ferroferric oxide nano-magnetic fluid
  • Preparation method of water-soluble ferroferric oxide nano-magnetic fluid
  • Preparation method of water-soluble ferroferric oxide nano-magnetic fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Dissolve 2.7 grams of ferric nitrate nonahydrate in a mixed solution of 50 ml of ethylene glycol and 50 ml of water, add 1.5 grams of L-tartaric acid, stir for 20 minutes, then add 4.8 grams of urea, and stir to dissolve;

[0026] (2) Then transferred to a polytetrafluoroethylene reactor, placed in an oven and heated to 140 o C, reacted for 36 hours to obtain a precipitate;

[0027] (3) Separate the precipitate with a magnet and wash with absolute ethanol;

[0028] (4) The product was placed in an oven and vacuum-dried at 40 o C for 12 hours to obtain water-soluble ferric oxide nanoparticles with a diameter of 3-5 nm.

[0029] (5) Disperse 0.1 g of Fe3O4 nanoparticles in 5 ml of water to obtain Fe3O4 nano-magnetic fluid.

[0030]

Embodiment 2

[0032] (1) Dissolve 1.8 grams of ferric chloride hexahydrate in a mixed solution of 50 ml of ethylene glycol and 50 ml of water, add 1.5 grams of L-tartaric acid, stir for 20 minutes, then add 4.8 grams of urea, stir to dissolve;

[0033] (2) Then transferred to a polytetrafluoroethylene reactor, placed in an oven and heated to 140 o C, reacted for 40 hours to obtain a precipitate;

[0034] (3) Separate the precipitate with a magnet and wash with absolute ethanol;

[0035] (4) The product was placed in an oven and vacuum-dried at 40 o C for 12 hours to obtain water-soluble ferric oxide nanoparticles with a diameter of 3-5 nm.

[0036] (5) Disperse 0.2 g ferroferric oxide nanoparticles in 10 ml water to obtain ferroferric oxide nano-magnetic fluid.

[0037]

Embodiment 3

[0039] (1) Dissolve 2.7 grams of ferric sulfate in a mixed solution of 50 ml of ethylene glycol and 50 ml of water, add 1.5 grams of L-tartaric acid, stir for 20 minutes, then add 4.8 grams of urea, stir to dissolve;

[0040] (2) Then transferred to a polytetrafluoroethylene reactor, placed in an oven and heated to 200 o C, reacted for 48 hours to obtain a precipitate;

[0041] (3) Separate the precipitate with a magnet and wash with absolute ethanol;

[0042] (4) The product was placed in an oven and vacuum-dried at 40 o C for 12 hours to obtain water-soluble ferric oxide nanoparticles with a diameter of 3-5 nm.

[0043] (5) Disperse 0.1 g ferroferric oxide nanoparticles in 10 ml water to obtain ferroferric oxide nano-magnetic fluid.

[0044]

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Abstract

The invention relates to a preparation method of a water-soluble ferroferric oxide nano-magnetic fluid, belonging to the technical field of nano material and biological material preparation. The method comprises the steps of hermetically heating a polyhydric alcohol-water solution of ferric iron salt, urea and tartaric acid or a mixed polyhydric alcohol-water solution of ferric iron salt, urea and tartaric acid to 100-200 DEG C, reacting for 6-48 hours to obtain water-soluble ferroferric oxide nanoparticles with diameters of 3-5 nanometers, and dispersing the ferroferric oxide nanoparticles in water, thus obtaining the ferroferric oxide nano-magnetic fluid. The method is simple in operation process, is low in production cost and is very suitable for industrial production.

Description

[0001] [0002] technical field [0003] The invention belongs to the technical field of magnetic nanometer material and biological material preparation, in particular to a preparation method of water-soluble iron ferric oxide nanometer magnetic fluid. Background technique [0004] Magnetic fluid, also known as magnetic liquid or ferrofluid, has both the fluidity of liquid and the magnetism of solid magnetic materials. Magnetic fluid not only has high academic value in theory, but also has important and extensive applications in practice, and can be widely used in fluid sealing, shock absorption, sound adjustment, light display, magnetic fluid mineral processing, medical equipment and magnetic targeting Drug delivery, nuclear magnetic resonance imaging, magnetic fluid intracellular hyperthermia, gene therapy and early diagnosis of tumors, oil-water separation and other fields. The currently reported magnetic fluid is generally a stable colloidal liquid formed by mixing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08H01F1/44B82Y40/00B82Y25/00
Inventor 贾勇张群英吴培云方方周双生彭代银
Owner ANHUI UNIVERSITY OF TRADITIONAL CHINESE MEDICINE
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