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Preparation method and application of magnetic composite nano material

A magnetic composite nanometer and magnetic nanoparticle technology, applied in chemical instruments and methods, silicon compounds, alkali metal compounds, etc., can solve the problems of high activity of magnetic nanoparticle surface groups, difficult to use directly, easy to oxidize, etc. Simple, low cost, improved biocompatibility

Pending Publication Date: 2021-03-19
BENGBU COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But Fe 3 o 4 Magnetic nanoparticles are very unstable due to the high activity of surface groups, have a strong tendency to aggregate, are easy to oxidize, and are difficult to use directly

Method used

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  • Preparation method and application of magnetic composite nano material
  • Preparation method and application of magnetic composite nano material
  • Preparation method and application of magnetic composite nano material

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specific Embodiment 1

[0028] A preparation method of magnetic composite nanomaterials, comprising the following steps:

[0029]Step S101: Fe 3 o 4 Preparation of magnetic nanoparticles: 1.08 g of FeCl 3 ·6H 2 O was dissolved in 160 mL of ethylene glycol to prepare a 0.025 mol / L ferric chloride solution. Under magnetic stirring conditions, add 2.88 g of sodium acetate and 0.80 g of urea. After the solids were completely dissolved, pour the solution into a high-pressure reactor , tighten the lid of the kettle, and place it in a blast drying oven at 180°C for 12 hours, then take out the autoclave and cool it to room temperature, magnetically separate the product in the autoclave, and wash the product with absolute ethanol 3 times, wash the product twice with secondary water, then wash the product once with absolute ethanol, and finally put the washed product in a vacuum drying oven at 80°C for 15 hours to obtain Fe 3 o 4 Magnetic nanoparticles, stored for future use.

[0030] Step S102: Fe 3 o ...

specific Embodiment 2

[0034] A preparation method of magnetic composite nanomaterials, comprising the following steps:

[0035] Step S101: Fe 3 o 4 Preparation of magnetic nanoparticles: 1.06 g of FeCl 3 ·6H 2 O was dissolved in 160 mL of ethylene glycol to obtain a 0.025 mol / L ferric chloride solution. Under magnetic stirring, 2.89 g of sodium acetate and 0.82 g of polyethylene glycol-200 were added. After the solid was completely dissolved, the Pour the solution into the autoclave, tighten the lid of the autoclave, and place it in a blast drying oven at 250°C for 8 hours, then take out the autoclave and cool it to room temperature, and magnetically separate the product in the autoclave to obtain a solid Wash the product 5 times with absolute ethanol, wash the product 4 times with secondary water, and wash the product once with absolute ethanol, and finally put the washed product in a vacuum drying oven at 100°C for 12 hours to obtain Fe 3 o 4 Magnetic nanoparticles, stored for future use.

...

specific Embodiment 3

[0040] A preparation method of magnetic composite nanomaterials, comprising the following steps:

[0041] Step S101: Fe 3 o 4 Preparation of magnetic nanoparticles: 1.08 g of FeCl 3 ·6H 2 O was dissolved in 160 mL of ethylene glycol to obtain a 0.025 mol / L ferric chloride solution. Under magnetic stirring, 2.88 g of sodium acetate and 0.80 g of cinnamic acid were added. After the solids were completely dissolved, the solution was poured into a high-pressure In the reaction kettle, tighten the lid of the kettle, put it in a blast drying oven at 200°C for 8 hours, then take out the high-pressure reaction kettle, and cool it to room temperature, magnetically separate the products in the reaction kettle, and use absolute ethanol to obtain the solid Wash the product 3 times, wash the product 3 times with secondary water, wash the product 1 time with absolute ethanol, and finally put the washed product in a vacuum drying oven at 100°C for 12 hours to obtain Fe 3 o 4 Magnetic na...

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Abstract

The invention relates to the technical field of magnetic nano-material preparation, in particular to a preparation method of a magnetic composite nano-material. The method comprises the preparation processes of Fe3O4 magnetic nanoparticles and Fe3O4@mSiO2 composite magnetic nanoparticles, and specifically adopts a solvothermal method, namely, after ferric trichloride is dissolved in ethylene glycol, reaction is carried out in a high-pressure reaction kettle to obtain Fe3O4 magnetic nanoparticles, and the surfaces of the Fe3O4 magnetic nanoparticles are coated with a SiO2 shell layer. Accordingto the magnetic composite nano material prepared by the method, not only the chemical stability of Fe3O4 magnetic nanoparticles is enhanced, the biocompatibility of the composite magnetic nanoparticles is also improved; and the application of the prepared magnetic composite nano material can be realized only through adsorption which is low in cost, free of by-product generation and easy to operate, and the composite nano material has important significance in investigating adsorption kinetics of the magnetic composite nano material to antibiotics in water and researching an efficient removaltechnology of antibiotic residues in water, and has practical value.

Description

technical field [0001] The invention relates to the technical field of magnetic nanomaterial preparation, in particular to a preparation method and application of a magnetic composite nanomaterial. Background technique [0002] In recent years, antibiotics are often overused in poultry and humans to cure or prevent diseases caused by microorganisms, but most of the ingested antibiotics cannot be absorbed by humans and animals, but will be directly discharged into the environment with excrement. A variety of antibiotics have certain toxic effects on fish, and antibiotic residues in the environment can induce bacterial resistance, causing potential risks to the ecological environment and humans. Therefore, the development of efficient removal technology for antibiotic residues in water has become one of the hotspots in the field of environment, and the study of magnetic composite materials on the level of antibiotics in water is of great significance. [0003] Fe 3 o 4 As a...

Claims

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Application Information

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IPC IPC(8): B01J20/10B01J20/28B01J20/30C02F1/28C02F9/02C02F101/34C02F101/36C02F101/38
CPCB01J20/06B01J20/103B01J20/28009B01J20/28021C02F1/281C02F1/44B01J2220/4806B01J2220/4812C02F2101/34C02F2101/38C02F2101/36
Inventor 张现峰芦静波代磊胡志伟
Owner BENGBU COLLEGE
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