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Method for preparing edge-carboxylated graphene and graphene through reaction milling technology

A technology of carboxylated graphene and graphene, applied in chemical instruments and methods, graphene, carbon compounds, etc., can solve the problems of large pollution, high cost, and high risk, and achieve complete crystal structure, excellent water solubility, and electrical conductivity. good effect

Active Publication Date: 2018-02-02
河北烯创科技有限公司
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Problems solved by technology

[0004] In order to solve the technical problems of high cost, low yield, high pollution and high risk in existing graphene preparation methods, the invention provides a method for preparing edge carboxylated graphene and graphene by reaction milling

Method used

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  • Method for preparing edge-carboxylated graphene and graphene through reaction milling technology
  • Method for preparing edge-carboxylated graphene and graphene through reaction milling technology
  • Method for preparing edge-carboxylated graphene and graphene through reaction milling technology

Examples

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Embodiment 1

[0025] (1) Take out the ball mill tank of the planetary ball mill, add zirconia beads of 1 / 3 volume of the ball mill tank, and continue to add 200 mesh natural flake graphite powder until the total volume of zirconia beads and graphite powder reaches 1 / 2 of the total volume of the tank body, The ball mill jar is sealed, and carbon dioxide gas is charged into the ball mill jar until the pressure reaches 0.2 MPa, and then the gas is released, and this is repeated five times. Fill the ball mill jar with carbon dioxide gas until the pressure reaches 2MPa, close the air valve, and install the ball mill jar on the ball mill.

[0026] (2) Set the rotation speed of the ball mill to 500 rpm, and the running time to 36 hours, start the ball mill, and run continuously for 36 hours. Open the air valve, sieve out the sample, and obtain edge carboxylated graphene.

[0027] (3) Put the prepared edge carboxylated graphene in a tube furnace, control the temperature at 1000° C., and reduce it ...

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Abstract

A method for preparing edge-carboxylated graphene and graphene through a reaction milling technology belongs to the field of novel nano-materials. The method comprises the following steps: placing graphite powder in a reaction milling device, sealing the reaction milling device, filling the reaction milling device with a carbon dioxide gas, starting the reaction milling device, performing reactionmilling at a certain speed for a certain time to obtain the edge-carboxylated graphene, reducing the edge-carboxylated graphene in an inert gas at a controlled temperature of 200-1200 DEG C to obtainthe graphene having a high quality, a large specific surface area and a high conductivity. The edge-carboxylated graphene and the graphene which are prepared through the method have the advantages oflarge specific surface area, high quality, good conductivity, low manufacturing cost, greenness, energy saving and environmental protection.

Description

technical field [0001] The invention belongs to the technical field of carbon material preparation, relates to a method for preparing graphene with large specific surface area, high quality and good conductivity, and belongs to the field of novel nanometer materials. Background technique [0002] Graphene is a two-dimensional atomic crystal material composed of a single layer of carbon atoms closely arranged in a regular hexagon. In 2004, a graphene monolith was obtained by British scientist Geim A K et al. by peeling graphite sheets with adhesive tape. Before the discovery of graphene, it was believed theoretically and experimentally that the perfect two-dimensional structure could not exist stably at non-absolute zero temperature, so the discovery of graphene attracted the attention of the whole world, and its discoverer won the Nobel Prize in 2010. Bell Prize in Physics. [0003] At present, with the continuous development of graphene preparation technology, the prepara...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/184
CPCC01B2204/22C01B2204/32C01P2002/72C01P2002/82C01P2002/85C01P2004/03C01P2004/04
Inventor 向中华杨凤新刘晓云牛明明赵双
Owner 河北烯创科技有限公司
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