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Magnetic halloysite nanotube as well as preparation method and application thereof

A technology of halloysite nanotubes and magnetic nanoparticles, which is applied in the field of nanomaterials and can solve the problems of occupying and restricting the application of secondary functionalization of the surface

Pending Publication Date: 2020-12-22
深圳市犀锐生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although Fe is modified on the outer surface of halloysite nanotubes 3 o 4 The study of nanoparticles has been reported, but this method occupies the unique outer surface of halloysite nanotubes, which limits the application of secondary functionalization of its surface

Method used

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  • Magnetic halloysite nanotube as well as preparation method and application thereof
  • Magnetic halloysite nanotube as well as preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] A method for preparing magnetic halloysite nanotubes. The synthetic method is carried out according to the following steps:

[0038] 1) Prepare organic iron solution: mix 21.46g of diphenyl ether, 2.585g of 1,2-hexadecane glycol, 1.695g of oleic acid, and 1.605g of oleylamine as a solvent for organic iron, and then add 0.7g of iron acetylacetonate;

[0039] 2) Add 0.1 g of halloysite nanotubes to the organic iron solution, and transfer to a three-necked flask and mix evenly;

[0040] 3) Use a vacuum pump to vacuumize the three-necked flask to remove air. In order to better ensure that there is no air in the three-necked flask, each time the system is vacuumed for 30 minutes, then the system is ventilated for 15 minutes to return to normal pressure. Repeat the above vacuuming operation for 3 times. Nitrogen, to ensure that the system is completely under nitrogen atmosphere;

[0041] 4) When the system is completely filled with nitrogen, start to feed cooling water, tu...

Embodiment 2

[0051] A preparation method of magnetic halloysite nanotubes, the synthesis method is carried out according to the following steps:

[0052] 1) Preparation of organic iron solution: mix 25.5g of diphenyl ether, 3.1g of 1,2-hexadecane glycol, 1.85g of oleic acid, and 1.8g of oleylamine as a solvent for organic iron, and then add 1g of iron acetylacetonate;

[0053] 2) 0.2g of halloysite nanotubes are added to the organic iron solution, and transferred to a three-necked flask and mixed evenly;

[0054] 3) Use a vacuum pump to vacuumize the three-necked flask to remove air. In order to better ensure that there is no air in the three-necked flask, each time the system is vacuumed for 30 minutes, then the system is ventilated for 10 minutes to return to normal pressure, and the above is repeated. Vacuumize 4 times, and feed nitrogen directly after the last vacuumize operation to ensure that the system is completely under nitrogen atmosphere;

[0055] 4) When the whole system is co...

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Abstract

The invention discloses a preparation method of a magnetic halloysite nanotube, which comprises the following steps: dispersing halloysite nanotubes used as a nano container in an organic iron solution by an organic iron method, conducting reacting in an oxygen-free environment, and carrying out in-situ synthesis on ferroferric oxide nanoparticles in the halloysite nanotubes, thereby forming magnetic halloysite. The magnetic halloysite is simple in preparation method, rich in raw material source and low in cost; and meanwhile, the surface property of the magnetic halloysite is not changed, andthe magnetic halloysite can be subjected to various surface modifications and is applied to the fields of biomedicine, chemistry, environmental science and the like.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a magnetic halloysite nanotube and its preparation method and application. Background technique [0002] Due to their unique size effect and magnetic responsiveness, magnetic nanoparticles have been widely used in biomedical fields such as drug carriers, magnetic separation, and cell sorting. Fe 3 o 4 Nanoparticles have become the most widely used magnetic nanoparticles in the field of biomedicine due to their high saturation magnetization and biosafety that can be regularly excreted from the body. However, its surface free energy is low, the dipole interaction between particles is strong, its stability is low, and it is easy to agglomerate, and the surface modification method has certain specificity, so it is difficult to give full play to its superior characteristics in practical applications. [0003] Halloysite nanotubes can be regarded as a kind of kaolinite with a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G49/08C01B33/40B82Y40/00B82Y30/00B82Y25/00B82Y5/00C02F1/48G01N33/543C12M1/00
CPCC01G49/08C01B33/40B82Y40/00B82Y30/00B82Y25/00B82Y5/00C02F1/48G01N33/543C12M47/04C01P2004/04C01P2006/42
Inventor 魏文博付烨陈宗正
Owner 深圳市犀锐生物科技有限公司
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