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A kind of preparation method of boron nitride nanosheet/ferroferric oxide magnetic nanocomposite material

A technology of triiron tetroxide and magnetic nanometer, which is applied in the field of preparation of nanocomposite materials, can solve the problems of complex method, increase energy consumption, increase reaction cost, etc., and achieve the effects of simple preparation process, stable structure and uniform dispersion.

Inactive Publication Date: 2017-03-01
HARBIN INST OF TECH
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  • Claims
  • Application Information

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Problems solved by technology

At present, the grafting of ferroferric oxide nano-magnetic particles on the surface of graphene has been widely studied, but the methods involved are relatively complicated, that is, high temperature heating is required, and inert gas protection is required, which undoubtedly increases energy consumption and improves response cost
In addition, the research on ferroferric oxide nano-magnetic particles loaded on the surface of boron nitride nanosheets has not been reported so far. Therefore, the present invention first effectively strips boron nitride, and proposes a convenient, Method for in-situ loading ferroferric oxide nano-magnetic particles directly on the surface of boron nanosheets

Method used

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  • A kind of preparation method of boron nitride nanosheet/ferroferric oxide magnetic nanocomposite material
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  • A kind of preparation method of boron nitride nanosheet/ferroferric oxide magnetic nanocomposite material

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specific Embodiment approach 1

[0018] Specific embodiment one: the preparation method of a kind of boron nitride nanosheet / ferroferric oxide magnetic nanocomposite material of the present embodiment is carried out according to the following steps:

[0019] 1. Disperse 1g to 6g of hexagonal boron nitride powder in 100mL to 400mL of mixed acid. Stir continuously for 10h to 60h at a temperature of 50°C to 100°C and a speed of 1000rpm to 1500rpm. The obtained mixture is then used Wash the mixture with deionized water to neutrality, and then dry it at 80°C to 100°C to obtain intercalated boron nitride; wherein, the mixed acid is composed of concentrated H 2 SO 4 and concentrated HNO with a mass concentration of 95% 3 Composition by volume ratio of 1 to 3:1;

[0020] 2. Disperse 0.1g ~ 1.5g of intercalated boron nitride obtained in step 1 in 50mL ~ 200mL of isopropanol, at room temperature, ultrasonically treat for 5h ~ 20h, and then centrifuge at a speed of 1500rpm ~ 6000rpm for 15min ~50min, take the superna...

specific Embodiment approach 2

[0027] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, the temperature is 50° C. and the rotation speed is 1500 rpm, and the stirring is continued for 15 hours. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0028] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that the mixed acid described in step one is made of concentrated H with a mass concentration of 98%. 2 SO 4 and concentrated HNO with a mass concentration of 95% 3 Composition by volume ratio of 3:1. Others are the same as in the first or second embodiment.

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Abstract

The invention aims to provide a method for preparing boron nitride nano-plate / ferroferric oxide magnetic nano-composite materials, and relates to a method for preparing nano-composite materials. The method includes firstly, preparing insertion boron nitride; secondly, preparing boron nitride nano-plates; thirdly, preparing boron nitride nano-plate dispersion liquid; fourthly, preparing the boron nitride nano-plate / ferroferric oxide magnetic nano-composite materials. The method has the advantages that the method is simple in preparation process, and energy consumption procedures for high-temperature heating, inert gas shielding and the like can be omitted; the method is environmental friendly and is high in efficiency; the boron nitride nano-plate / ferroferric oxide magnetic nano-composite materials prepared by the aid of the method can be widely applied to aspects of wave absorbing materials, various catalysts, targeting materials and the like and the field of other relevant functional materials.

Description

technical field [0001] The invention relates to a preparation method of a nanocomposite material. Background technique [0002] With the development of graphene research boom, boron nitride nanosheets, a two-dimensional nanomaterial with a graphene-like sheet structure, have also attracted more and more attention from the scientific research community. Boron nitride nanosheets have excellent physical and chemical properties such as oxidation resistance, chemical corrosion resistance, high temperature resistance, high thermal conductivity, and wide band gap. In addition, boron nitride nanosheets also have great application potential in high power, high frequency, radiation protection and optoelectronics. However, compared with graphene, in addition to the covalent bond between the boron nitride sheets, there is also an ionic bond, which makes it difficult to peel it off by traditional methods. The limited preparation methods greatly limit the research and application of bor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/064B82Y30/00
Inventor 矫维成袁凤王荣国刘文博杨帆郝立峰徐忠海赫晓东
Owner HARBIN INST OF TECH
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