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Preparation method of graphene and boron nitride composite material

A composite material and graphene technology, applied in chemical instruments and methods, other chemical processes, textile industry wastewater treatment, etc., to achieve good performance

Inactive Publication Date: 2021-04-02
王杰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But as far as the applicant knows, few people can directly compound it in one step and apply it to the field of adsorbents, which is a brand new field for researchers.

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  • Preparation method of graphene and boron nitride composite material

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preparation example Construction

[0027] A kind of preparation method of graphene and boron nitride composite material, it comprises the following steps:

[0028] 1) Disperse graphene oxide in ethanol solution, then add appropriate amount of boric acid and melamine to it, and ultrasonically disperse evenly;

[0029] 2) Add an appropriate amount of mineralizer to the uniformly mixed solution in step 1), and stir evenly to promote the formation of boron nitride instead of forming a doped state;

[0030] 3) The uniformly mixed solution in step 2) is centrifuged and dried, then ground into powder, and placed in a sintering furnace for sintering under a protective atmosphere to obtain the final product.

[0031] The technical solution of the present invention will now be described in detail according to the embodiments of the description, hoping to enable those skilled in the art to clearly understand the concept of the present invention and its experimental process.

Embodiment 1

[0033] Add an appropriate amount of boric acid and melamine to the graphene oxide ethanol solution prepared in advance with a concentration of 0.5 mg / mL, and mechanically stir to completely dissolve and evenly disperse in the graphene oxide solution; then add an appropriate amount of boric acid to the mixed solution Aqueous ammonium chloride solution, continue to stir to make it completely and evenly dispersed in the above mixed solution; after that, first centrifuge the mixed solution at 4000-8000rpm, then dry it overnight, and grind it with a mortar after drying ;Finally, transfer the obtained powder to the porcelain boat and push it to the middle of the quartz tube of the muffle furnace. First, the air in the quartz tube is completely replaced with nitrogen, and then the temperature starts to rise, starting from room temperature at a rate of 10°C / min. Raise the temperature to 340°C and keep it warm for 2h, then continue to raise the temperature to 1100°C at a rate of 5°C / min...

Embodiment 2

[0035] Add an appropriate amount of boric acid and melamine to the graphene oxide ethanol solution prepared in advance with a concentration of 2.0 mg / mL, mechanically stir to completely dissolve and evenly disperse in the graphene oxide solution; then add an appropriate amount of boric acid to the mixed solution Aqueous ammonium chloride solution, continue to stir to make it completely and evenly dispersed in the above mixed solution; after that, first centrifuge the mixed solution at 4000-8000rpm, then dry it overnight, and grind it with a mortar after drying ;Finally, transfer the obtained powder to the porcelain boat and push it to the middle of the quartz tube of the muffle furnace. First, the air in the quartz tube is completely replaced with nitrogen, and then the temperature starts to rise, starting from room temperature at a rate of 10°C / min. Raise the temperature to 340°C and keep it warm for 2h, then continue to raise the temperature to 1100°C at a rate of 5°C / min and...

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Abstract

The invention relates to a preparation method of a graphene and boron nitride composite material, which comprises the following steps: 1) dispersing graphene oxide in an ethanol solution, adding a proper amount of boric acid and melamine, and carrying out uniform ultrasonic dispersion; 2) adding a proper amount of mineralizer into the uniformly mixed solution obtained in the step 1), and conducting uniform stirring to promote the formation of boron nitride instead of forming a doped state, and 3) centrifuging the uniformly mixed solution obtained in the step 2), conducting drying, conducting grinding to form powder, putting the powder into a sintering furnace, and conducting sintering in a protective atmosphere to obtain a final product.

Description

technical field [0001] The invention relates to the technical field of adsorption material preparation, in particular to the preparation and application field of a graphene and boron nitride composite adsorption material. Background technique [0002] Graphene is carbon atoms through sp 2 The two-dimensional layered material with a hexagonal honeycomb structure formed by hybridization is a single atomic layer carbon material that can exist stably. Many allotropes of carbon can be divided into zero-dimensional carbon nanoparticles, one-dimensional carbon nanotubes, two-dimensional graphene, and three-dimensional graphite or graphene aerogels according to the dimensionality. The single-atom arrangement structure makes it have very superior performance, such as it is widely used in technical fields such as thermal conductivity, electrical conductivity, adsorption, catalysis, and shielding. It is a new type of material that is currently the most researched. [0003] Hexagonal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/20B01J20/30C02F1/28C02F101/30C02F103/30
CPCB01J20/0259B01J20/20C02F1/281C02F1/283C02F2101/308C02F2103/30
Inventor 王杰徐四向韩勇
Owner 王杰