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Preparation method of monodisperse super paramagnetic ferroferric oxide nanoparticles and ferroferric oxide nanoparticles

A technology of ferroferric oxide and nanoparticles, which is applied in the preparation of monodisperse superparamagnetic ferroferric oxide nanoparticles, in the field of monodisperse superparamagnetic ferroferric oxide nanoparticles, which can solve the problem of high energy consumption and long reaction time Long, large particle size control and other issues, to achieve the effect of simple preparation method, simple and convenient synthesis process, and mild process conditions

Inactive Publication Date: 2015-05-27
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing solvothermal method for preparing magnetic particles of uniform size is relatively mature, but there are shortcomings such as controlling the particle size too large, long reaction time and high energy consumption, which limit its further application.

Method used

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  • Preparation method of monodisperse super paramagnetic ferroferric oxide nanoparticles and ferroferric oxide nanoparticles
  • Preparation method of monodisperse super paramagnetic ferroferric oxide nanoparticles and ferroferric oxide nanoparticles
  • Preparation method of monodisperse super paramagnetic ferroferric oxide nanoparticles and ferroferric oxide nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1 Preparation of Monodisperse Superparamagnetic Iron Tetroxide Nanoparticles

[0038] S1.Fe 3 o 4 Synthesis of Magnetic Particles

[0039] 1g FeCL 3 ·6H 2 O was dissolved in 20 mL of ethylene glycol organic solvent and stirred to form a clear solution. Then add 3g of sodium acetate and 10mL of ethylenediamine, stir vigorously for 30min and ultrasonically (ultrasonic cleaner) for 10min to make it into an orange-yellow clear solution. The reaction was carried out at 200° C. for 8 hours in a drying oven.

[0040] After the reaction, cool to room temperature. After several times of deionized water washing, the nano Fe can be obtained 3 o 4 magnetic particles.

[0041] S2. Surface modification of magnetic particles

[0042] Dissolve 0.3g of polyacrylic acid in 10mL of dimethylformamide, Fe 3 o 4 After ultrasonic treatment for 30 minutes, the magnetic particles were added to 20 mL of dimethylformamide, mixed and stirred, then transferred to a container lined...

Embodiment 2

[0043] Example 2 Preparation of Monodisperse Superparamagnetic Iron Tetroxide Nanoparticles

[0044] S1.Fe 3 o 4 Synthesis of Magnetic Particles

[0045] 1g FeCL 3 ·6H 2 O was dissolved in 20 mL of ethylene glycol organic solvent and stirred to form a clear solution. Then add 3g of sodium acetate and 10mL of ethylenediamine, stir vigorously for 30min and sonicate for 10min to make it into an orange-yellow clear solution. The reaction was carried out for 10 hours.

[0046] After the reaction, cool to room temperature. After several times of deionized water washing, the nano Fe can be obtained 3 o 4 magnetic

[0047] sex particles.

[0048] S2. Surface modification of magnetic particles

[0049] Dissolve 0.3g of polyacrylic acid in 10mL of dimethylformamide, Fe 3 o 4 After ultrasonic treatment for 30 minutes, the magnetic particles were added to 20 mL of dimethylformamide, mixed and stirred, then transferred to a container lined with a hydrothermal reaction kettle, ...

Embodiment 3

[0050] Example 3 Preparation of Monodisperse Superparamagnetic Iron Tetroxide Nanoparticles

[0051] S1.Fe 3 o 4 Synthesis of Magnetic Particles

[0052] 1g FeCL 3 ·6H 2 O was dissolved in 20 mL of ethylene glycol organic solvent and stirred to form a clear solution. Then add 3g of sodium acetate and 10mL of ethylenediamine, stir vigorously for 30min and sonicate for 10min to make it into an orange-yellow clear solution. The reaction was carried out for 12 hours. After the reaction, cool to room temperature. After several times of deionized water washing, the nano Fe can be obtained 3 o 4 magnetic particles.

[0053] S2. Surface modification of magnetic particles

[0054] Dissolve 0.3g of polyacrylic acid in 10mL of dimethylformamide, Fe 3 o 4 The magnetic particles were ultrasonically treated for 30 minutes and added to 20 mL of dimethylformamide. The two were mixed and stirred, then transferred to a container lined with a hydrothermal reaction kettle, sealed and ...

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Abstract

The invention discloses a preparation method of monodisperse super paramagnetic ferroferric oxide nanoparticles and the ferroferric oxide nanoparticles. The preparation method comprises the following steps: preparing the monodisperse super paramagnetic ferroferric oxide nanoparticles by using a solvothermal method; performing surfactant polyacrylic acid modification on the Fe3O4 magnetic particles by using a hydrothermal method; and finally, dispersing into deionized water to obtain the monodisperse super paramagnetic ferroferric oxide nanoparticles. The prepared monodisperse super paramagnetic ferroferric oxide nanoparticles are uniform in particle size distribution of magnetic particles with average particle size of 75 nm, uniform in features, high in magnetic property of the particles, high in dispersibility and high in superparamagnetism; moreover, the specific saturation magnetization intensity of the particles can reach 78 emu / g at a maximum. The preparation method of the monodisperse super paramagnetic ferroferric oxide nanoparticles is convenient and easy, low in production cost, can be widely applied to the fields of machines, electronics, optics, magnetism, chemical engineering, biology and the like, and particularly, has great prospect on application of anti-cancer medicines on transmission and releasing.

Description

technical field [0001] The invention relates to the preparation and surface modification technology of nanopowder, and more specifically, to a preparation method of monodisperse superparamagnetic ferriferrous oxide nanoparticles and the monodisperse superparamagnetic triiron tetroxide nanoparticle. Background technique [0002] Magnetic nanoparticles are one of the research hotspots in the field of materials in the world today, and they are a class of functional materials with broad application prospects. Magnetic nanoparticles are the earliest applied magnetic nanomaterials, and are widely used in the fields of magnetic recording materials, preparation of magnetic fluids, and biomedicine. Among them, magnetic nanomaterials with biocompatibility and certain biomedical functions have the characteristics of small size effect, good magnetic orientation, biocompatibility, biodegradability and active functional groups. Due to the biological activity, affinity or reactivity of ma...

Claims

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Application Information

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IPC IPC(8): C01G49/08B82Y30/00
Inventor 庄琳沈辉招泳欣廖爵威
Owner SUN YAT SEN UNIV
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