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Preparation method of magnetic carbon nanotubes with low Curie temperature

A technology of magnetic carbon nanotubes and low Curie point, which is applied in the direction of carbon nanotubes, nanocarbon, nanotechnology, etc., can solve problems such as uneven temperature distribution, affecting the treatment effect, uniform distribution of nanoparticles, etc., and achieves wide application Foreground, easy to promote, economical and convenient effect

Active Publication Date: 2016-09-21
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to its high surface energy and mutual magnetic adsorption, ferrite nanoparticles are easy to form agglomerations, resulting in the uneven distribution of nanoparticles in the tumor tissue, which in turn leads to uneven temperature distribution in the treatment target area. Seriously affect the therapeutic effect, so the dispersion performance of ferrite nanoparticles is another controlling factor affecting the effect of magnetic induction hyperthermia

Method used

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  • Preparation method of magnetic carbon nanotubes with low Curie temperature
  • Preparation method of magnetic carbon nanotubes with low Curie temperature
  • Preparation method of magnetic carbon nanotubes with low Curie temperature

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Embodiment 1

[0029] A method for preparing magnetic carbon nanotubes with a low Curie point, mainly comprising the following steps:

[0030] (1) Configure 150 mL of 20 g / L NaOH aqueous solution as a precipitating agent.

[0031] (2) Weigh 0.40481g of ZnCl 2 , 0.60196g CoCl 2 ·6H 2 O, 0.87925g CrCl 3 ·6H 2 O, 2.08131 g FeCl 3 ·6H 2 O and 2.304g of surface-modified carbon nanotubes were dissolved and dispersed in 80mL of deionized water to obtain a mixed solution;

[0032] (3) Slowly add the NaOH aqueous solution in step (1) dropwise to the mixed solution obtained in (2), and fully stir for 30 minutes to obtain a reaction solution.

[0033](4) Transfer the reaction solution obtained in step (3) to the autoclave and seal it under the conditions that the set temperature is 250°C, the heating rate is 2°C / min, the magnetic stirring speed is 450r / min, and the pressure is 3.5Mpa. , After heating for 2 hours, it was naturally cooled to obtain a black product.

[0034] (5) Open the autoclav...

Embodiment 2

[0037] (1) Configure 150 mL of 24 g / L NaOH aqueous solution as a precipitating agent.

[0038] (2) Weigh 0.47978g of ZnCl 2 , 0.66858g CoCl 2 ·6H 2 O, 1.0878g CrCl 3 ·6H 2 O, 2.58947 g FeCl 3 ·6H 2 The surface-modified carbon nanotubes of O and 1.5g are dissolved and dispersed in 80mL of deionized water to obtain a mixed solution;

[0039] (3) Slowly add the NaOH aqueous solution in step (1) dropwise to the mixed solution obtained in (2), and fully stir for 30 minutes to obtain a reaction solution.

[0040] (4) Transfer the reaction solution obtained in step (3) to the autoclave and seal it under the conditions that the set temperature is 300°C, the heating rate is 3°C / min, the magnetic stirring speed is 500r / min, and the pressure is 3.8Mpa , After heating for 2 hours, it was naturally cooled to obtain a black product.

[0041] (5) Open the autoclave, filter the black product with deionized water and ethanol, wash until neutral, put it into a vacuum drying oven, and dr...

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Abstract

The invention belongs to the technical field of magnetic induction thermotherapy for tumors and provides a preparation method of magnetic carbon nanotubes with low Curie temperature. The preparation method comprises the following steps: 1) preparing a NaOH aqueous solution to serve as a precipitant; 2) dissolving CoCl2.6H2O, FeCl3.6H2O, CrCl3.6H2O, ZnCl2 and surface modified carbon nanotubes in deionized water to obtain a precursor solution; 3) adding the precipitant dropwise to the precursor solution to obtain a reaction liquid after stirring; 4) transferring the reaction liquid to an autoclave, sealing the autoclave, performing a reaction for 2-3 h and obtaining a black product through natural cooling; 5) washing and drying the black product to obtain the magnetic carbon nanotubes with low Curie temperature. According to the preparation method, the loading quantity of low-Curie-temperature magnetic nanoparticles on the carbon nanotubes is controlled by changing the proportion of initial raw materials, and the magnetic carbon nanotubes with different dispersity and heat production efficiency are obtained, have good dispersity and are applied to magnetic induction thermotherapy for the tumors.

Description

technical field [0001] The invention belongs to the technical field of magnetic induction hyperthermia for tumors, and relates to the preparation of nanometer materials for magnetic induction hyperthermia, in particular to a method for preparing magnetic carbon nanotubes with a low Curie point. Background technique [0002] Cancer is the ultimate killer that threatens human health. More than 8.4 million patients worldwide die from cancer every year. Efficient and side-effect-free cancer treatments have always been a research hotspot in the field of biomedicine. Magnetic induction hyperthermia is a new type of cancer treatment method developed in recent years. It uses the principle of magnetic materials to generate heat under an alternating magnetic field, implants magnetic media into the tumor treatment target area, selectively kills the tumor target, and does not affect normal tissues, so as to achieve the purpose of tumor targeted therapy. Compared with chemotherapy or ra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y40/00A61K41/00A61P35/00B82Y30/00
CPCA61K41/0052C01B2202/20C01P2004/80C01P2006/42
Inventor 张伟董地理左旭东王志强吴承伟
Owner DALIAN UNIV OF TECH
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