Tetraazacalix[2]arene[2]triazine-modified ferric iron tetroxide magnetic nanoparticles and its preparation method and application

A technology of magnetic nanoparticles and ferroferric oxide, which is applied in ferrous oxides, iron oxide/iron hydroxide, nanotechnology for materials and surface science, etc., can solve particle aggregation, agglomeration, particle size, etc. Larger and other issues, to achieve the effect of low cost, large surface area, simple separation

Active Publication Date: 2016-04-06
ZHENGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, magnetic nanomaterials are prone to particle aggregation and agglomeration, forming secondary particles and making the particle size larger

Method used

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  • Tetraazacalix[2]arene[2]triazine-modified ferric iron tetroxide magnetic nanoparticles and its preparation method and application
  • Tetraazacalix[2]arene[2]triazine-modified ferric iron tetroxide magnetic nanoparticles and its preparation method and application
  • Tetraazacalix[2]arene[2]triazine-modified ferric iron tetroxide magnetic nanoparticles and its preparation method and application

Examples

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example 1

[0030] Example 1, adopt the magnetic nano-particles that the present invention makes as dispersion extraction material, the liquid to be extracted is the 100mL aqueous solution that contains each 100ng of phenanthrene, anthracene, pyrene, chrysene, benzene, 0.1g of magnetic nanoparticles is put into it, ultrasonic dispersion three Ten minutes, after standing for one hour, collect the magnetic material with a magnet, and pour off the upper layer of clear and transparent water; then add 100mL of acetonitrile solution, ultrasonically disperse, stand for one hour, collect the magnetic material with a magnet, and mix the original solution and The solutions extracted by the magnetic material were measured by high-performance liquid chromatography, and the recovery rates of various polycyclic aromatic hydrocarbons all reached more than 90%.

example 2

[0031] Example 2, adopt the magnetic nanoparticle that the present invention makes as dispersed extraction material, and the liquid to be extracted is inorganic cation Cu 2+ 、Cd 2+ , Pb 2+ 、Co 2+ Each 50ng of 100mL aqueous solution, put 0.1g of magnetic nanoparticles into it, ultrasonically disperse for 30 minutes, after standing for one hour, collect the magnetic material with a magnet, and pour out the upper layer of clear and transparent water; then 100mL of 0.5mol / Add L hydrochloric acid solution, ultrasonically disperse, leave standstill for one hour, collect the magnetic material with a magnet, and the original solution and the solution extracted by the magnetic material are detected with an atomic absorption spectrophotometer respectively. After measuring, the recovery rates of various inorganic cations are equal Reach more than 90%.

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Abstract

The invention discloses ferroferric oxide magnetic nanometer particles decorated with tetraazacalix [2] arene [2] triazine. A preparation method of the ferroferric oxide magnetic nanometer particles comprises the following steps of: firstly, covering a silicon shell by using the ferroferric oxide magnetic nanometer particles; decorating with amino to obtain amino-modified ferroferric oxide magnetic nanometer particles; and reacting the ferroferric oxide magnetic nanometer particles with the tetraazacalix [2] arene [2] triazine at 110 DEG C under a nitrogen condition to prepare the ferroferric oxide magnetic nanometer particles decorated with tetraazacalix [2] arene [2] triazine. The ferroferric oxide magnetic nanometer particles integrate the advantages of large superficial area of the original and easiness of separation of the original ferroferric oxide magnetic nanometer particles, and also have a new function characteristic, so that the extraction selectivity of a characteristic target is enhanced; and the ferroferric oxide magnetic nanometer particles are used for extracting and separating, and have the advantages of easiness and convenience in operation, and capability of extracting, enriching and separating organic matters and inorganic cations. And moreover, the ferroferric oxide magnetic nanometer particles can be totally separated from a base solution under an external magnetic field function, so that the ferroferric oxide magnetic nanometer particles are economic, environment-friendly and high in recovery rate and have a good popularization and application prospect.

Description

technical field [0001] The present invention relates to magnetic nanoparticles, in particular to ferric iron tetroxide magnetic nanoparticles modified by tetraazacalix [2] arene [2] triazine, the present invention also relates to the preparation method of the magnetic nanoparticles and the magnetic nano application of particles. Background technique [0002] Magnetic nanomaterials have become a research hotspot in the fields of physics, chemistry, chemical industry, biology, and medicine. However, magnetic nanomaterials are prone to particle aggregation and agglomeration, forming secondary particles and increasing the particle size. In order to overcome the above obstacles and make it more widely used, it is necessary to modify the magnetic nanomaterials to improve their dispersion and application value. [0003] In recent years, a large number of researchers at home and abroad have devoted themselves to the surface modification of magnetic nanoparticles. Through surface m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F1/11C01G49/08B82Y30/00
Inventor 张书胜赵文杰蒋琼孟蕾李海斌郭亚肖
Owner ZHENGZHOU UNIV
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