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A method for preparing graphene by cutting intercalation method

A graphene cutting technology, applied in the direction of graphene, chemical instruments and methods, nano-carbon, etc., can solve the problems of low cost of graphene, complicated operation, high cost of growing graphene, etc., and achieve the effect of easy operation and simple method

Active Publication Date: 2018-10-09
WUXI JCNANO TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these methods are either complicated to operate or difficult to control the precise separation of graphene
The size of graphene can be controlled by CVD growth method, but the CVD method cannot obtain macro graphene to meet the needs of many application fields
And the cost of growing graphene by CVD is relatively high
[0004] Graphene prepared by intercalation method has low cost and high yield, but its size and thickness are large
These make the graphene prepared by the intercalation method very limited in application.

Method used

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  • A method for preparing graphene by cutting intercalation method
  • A method for preparing graphene by cutting intercalation method
  • A method for preparing graphene by cutting intercalation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Put 20 mg of graphene (80 μm in size) prepared by the intercalation method into a 100 mL hydrothermal kettle lined with polytetrafluoroethylene, add 60 mL of water and 10 mL of hydrogen peroxide, and react at 140 °C for 30 minutes. After the reaction is complete, take out the sample Freeze drying was carried out.

[0017] See attached for the characterization results figure 1 . The results prove that the size of the cut graphene is 1 μm to 10 μm in diameter, and it is relatively uniform.

Embodiment 2

[0019] Put 20 mg of graphene (80 μm in size) prepared by the intercalation method into a 100 mL hydrothermal kettle lined with polytetrafluoroethylene, add 60 mL of water and 10 mL of hydrogen peroxide, and react for 45 minutes at 140 ° C. After the reaction is complete, take out the sample Freeze drying was carried out.

[0020] See attached for the characterization results figure 2 . The results prove that the size of graphene after cutting is 800nm-2μm in diameter, and it is relatively uniform.

Embodiment 3

[0022] Put 20 mg of graphene (80 μm in size) prepared by the intercalation method into a 100 mL hydrothermal kettle lined with polytetrafluoroethylene, add 60 mL of water and 10 mL of hydrogen peroxide, and react at 180 ° C for 20 minutes. After the reaction is complete, take out the sample Freeze drying was carried out.

[0023] See attached for the characterization results image 3 . The results prove that the size of graphene after cutting is 800nm-1.5μm in diameter, and it is relatively uniform.

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Abstract

The invention discloses a method for preparing graphene by a cutting intercalation method. The method comprises the following steps: putting the graphene prepared by the intercalation method into a hydrothermal reactor employing polytetrafluoroethylene as a lining; adding a certain amount of water and hydrogen peroxide and reacting for 15 minutes to an hour at 100-180 DEG C; and taking out a sample for freeze drying after complete reaction to obtain the graphene prepared by the intercalation method after cutting. The method has the advantages of being simple and easy to operate; the overall process is environment-friendly and free of pollution; and the graphene sample with relatively uniformity in macroscopic preparation dimension can be achieved.

Description

technical field [0001] The invention relates to the field of graphene preparation, in particular to the field of graphene size-based control preparation, in particular to a cutting method for preparing graphene by an intercalation method. Background technique [0002] Graphene preparation is an important link to promote the industrialization of graphene. The preparation of graphene includes not only the macro-preparation of graphene, but also the controllable preparation of graphene. The controllable factors mainly include the thickness and size of graphene. These factors can largely affect the properties of graphene. Especially the size of graphene, the size of graphene will affect the conductivity of graphene, which will affect the application of graphene. Therefore, it is crucial to control the size of graphene. At present, the methods for mass-preparing graphene are mainly chemical oxidation and intercalation. Among them, the size distribution of graphene prepared by...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/184
CPCC01B2204/32C01P2004/04C01P2004/61C01P2004/62
Inventor 廖威
Owner WUXI JCNANO TECH CO LTD