Magnetic nanorod with ordered large mesoporous polymer shell layer and synthesis method of magnetic nanorod

A technology of magnetic nanorods and synthesis methods, applied in medical preparations of non-active ingredients, inorganic non-effective ingredients, chemical instruments and methods, etc., can solve the problems of limited application, single silicon-based shell structure, etc., and achieve surface modification properties, unique spontaneous shear stirring, and controllable mesoscopic structure

Pending Publication Date: 2022-01-07
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, core-shell magnetic mesoporous materials are usually based on a single silicon-based shell structure, which severely limits their applications.

Method used

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  • Magnetic nanorod with ordered large mesoporous polymer shell layer and synthesis method of magnetic nanorod
  • Magnetic nanorod with ordered large mesoporous polymer shell layer and synthesis method of magnetic nanorod
  • Magnetic nanorod with ordered large mesoporous polymer shell layer and synthesis method of magnetic nanorod

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Embodiment 1

[0036] This embodiment provides a magnetic nanorod with an ordered large mesoporous polymer shell and a synthesis method thereof.

[0037] The method for synthesizing the magnetic nanorods with ordered large mesoporous polymer shells comprises the following steps:

[0038] In step A, 50 mg of magnetic ferric oxide particles with a particle size of about 50 nm were added to 90 mL of ethanol for ultrasonic dispersion, mechanically stirred at 350 rpm for 30 min, and quickly added to 4.5 mL of concentrated ammonia water (28 wt.%); The rotation speed was increased to 700 rpm and vigorously stirred for 10 min, then the rotation speed was adjusted back to 350 rpm, and 0.45 mL TEOS was added dropwise, and the stirring was stopped at 350 rpm for 15 min. After that, it was placed in a stable magnetic field (15 mT) for 90 s, and then the magnetic field was removed. After standing for 8 h, a magnetic nanorod with a layer of silicon dioxide deposited on the surface was obtained. The produc...

Embodiment 2

[0044] This embodiment also provides a magnetic nanorod with an ordered large mesoporous polymer shell and a synthesis method thereof.

[0045] The method for synthesizing the magnetic nanorods with ordered large mesoporous polymer shells comprises the following steps:

[0046] Step A, add 50 mg of magnetic γ-iron sesquioxide particles with a particle size of about 200 nm into 60 mL of ethanol for ultrasonic dispersion, mechanically stir at 350 rpm for 30 min, and quickly add 6 mL of concentrated ammonia water (28 wt.%); Immediately increase the rotational speed to 700 rpm and vigorously stir for 10 min, then adjust the rotational speed back to 350 rpm, and add 0.9 mL TEOS dropwise, and stir at 350 rpm for 15 min, then stop stirring. After that, it was placed in a stable magnetic field (30 mT) for 90 s, and then the magnetic field was removed. After standing for 8 h, a magnetic nanorod with a layer of silicon dioxide deposited on the surface was obtained. The product was separ...

Embodiment 3

[0051] This embodiment also provides a magnetic nanorod with an ordered large mesoporous polymer shell and a synthesis method thereof.

[0052] The method for synthesizing the magnetic nanorods with ordered large mesoporous polymer shells comprises the following steps:

[0053] In step A, 50 mg of magnetic NiFe with a particle size of about 500 nm 2 o 4 Particles were added to 90 mL of ethanol for ultrasonic dispersion, mechanically stirred at 350 rpm for 30 min, and quickly added to 9 mL of concentrated ammonia water (28 wt.%); immediately increased the speed to 700 rpm and stirred vigorously for 10 min, then returned the speed to 350 rpm, and 0.9 mL TEOS was added dropwise, and stirred at 350 rpm for 15 min, then the stirring was stopped. After that, it was left to stand in a stable magnetic field (60 mT) for 180 s, and then the magnetic field was removed. After standing for 8 h, a magnetic nanorod with a layer of silicon dioxide deposited on the surface was obtained. The ...

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Abstract

The invention belongs to the technical field of advanced nano materials, and particularly relates to a magnetic nanorod with an ordered large mesoporous polymer shell layer and a synthesis method of the magnetic nanorod. The synthesis method comprises the following steps of: by taking magnetic nano-particles as seeds, depositing a silicon dioxide layer on the surfaces of the particles through a sol-gel method and a magnetic field auxiliary assembly method, and then directionally arranging and assembling under the induction of a stable magnetic field to form a one-dimensional rod core; depositing a macromolecular surfactant/ high molecular layer composite material on the surface of the one-dimensional rod core by adopting interface co-assembly and using a high-molecular-weight block copolymer as a template agent; and removing the surfactant to form a one-dimensional ordered large mesoporous polymer-based material layer with an ordered mesostructure on the surface of silicon dioxide. The nanorod has an ordered large mesoporous channel, a stable structure, a controllable mesostructure, a strong hydrophilic surface, unique magnetic anisotropy of a one-dimensional magnetic material and spontaneous shearing and stirring performance. The preparation method is simple, the yield of the method is high, synthesis raw materials are easy to obtain, and the nanorod is suitable for large-scale production.

Description

technical field [0001] The invention belongs to the technical field of advanced nanometer materials, and specifically relates to a magnetic nanorod with an ordered large mesoporous polymer shell and a synthesis method thereof. Background technique [0002] Ordered mesoporous materials are a new type of nanomaterials with regular mesoporous channels, adjustable mesoporous channel structure, high specific surface area, large pore volume and abundant components, which not only expand molecular sieves from micropores to mesoporous, and can be applied to macromolecule adsorption, catalytic reaction, drug storage, transportation, etc. Magnetic particles are widely used in catalysis, contrast agents, targeted therapy and other fields due to their special physical and chemical properties. In the field where the two intersect, the combination of ordered mesoporous materials and magnetic particles produces a core-shell structure material with a magnetic particle core and a mesoporous...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/28B01J31/28B01J35/10A61K47/04B01J20/30
CPCB01J20/103B01J20/06B01J20/268B01J20/28009B01J31/28B01J35/10A61K47/02
Inventor 邓勇辉潘盼盼
Owner FUDAN UNIV
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