Method for preparing functionalized graphene by synchronous ultrasonic chemical and mechanical chemical method

A mechanochemical method and sonochemical technology, applied in the direction of graphene, bulk chemical production, nano-carbon, etc., can solve the problems that graphene has not been reported, and achieve the effect of controllable cost, mild conditions and unique process

Inactive Publication Date: 2018-03-13
广东烯谷碳源新材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the patent does not use mechanochemical modification of graphene to bring functional groups
[0006] To sum up, at present, the simultaneous preparation of functionalized graphene by sonochemistry and mechanochemistry has not been reported.

Method used

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  • Method for preparing functionalized graphene by synchronous ultrasonic chemical and mechanical chemical method
  • Method for preparing functionalized graphene by synchronous ultrasonic chemical and mechanical chemical method
  • Method for preparing functionalized graphene by synchronous ultrasonic chemical and mechanical chemical method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] At room temperature, mix 1g of natural graphite powder with 6g of VA-080, then add 25g of 1-methyl-3-ethylimidazolium tetrafluoroborate, vacuumize, then conduct vacuum ultrasonic ball milling at 250rpm for 8h, cool down, The mixture was washed with ethanol, washed with water, and dried at 60° C. to obtain graphene containing hydroxyl functional groups.

Embodiment 2

[0034]At room temperature, 1 g of natural graphite and 20 g of ethyl carbonate were subjected to vacuum ultrasonic ball milling at a speed of 350 rpm for 12 h, cooled, the mixture was washed with ethanol and water, and dried at 60° C. to obtain graphene containing carboxyl functional groups.

Embodiment 3

[0036] At room temperature, 1g of artificial graphite, 3g of VA-086, and 15g of 1-methyl-3-ethylimidazolium hexafluorophosphate were vacuumed, then vacuum ultrasonic ball milled at a speed of 350rpm for 12h, cooled, and the mixture was washed with ethanol. Washed with water, dried at 60°C to obtain graphene containing hydroxyl functional groups.

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Abstract

The invention discloses a method for preparing functionalized graphene by a synchronous ultrasonic chemical and mechanical chemical method. The method comprises the steps of adding a graphite raw material and a functionalized reagent into ultrasonic ball milling equipment, and carrying out ultrasonic ball milling for 1-72h at a rotating speed of 100-500rpm under an ultrasonic environment to obtainfunctionalized graphene containing functional groups. According to the method, graphite is stripped by synchronous ultrasonic ball milling to obtain graphene, and by virtue of ultrasonic chemical andmechano-chemical actions, the functionalized reagent and the graphene rapidly react chemically, and functionalized modification of the graphene is realized at the same time, so that the stripping efficiency and dispersion stability of the graphene are effectively improved, the structure and the performance of the graphene material are regulated and controlled, and the application field of the graphene material is expanded.

Description

technical field [0001] The invention relates to a method for preparing functionalized graphene, in particular to a method for preparing functionalized graphene based on synchronous sonochemical and mechanochemical methods. Background technique [0002] Graphene has excellent electrical and mechanical properties, and has become a hot spot in the research field in recent years. Graphene was successfully prepared by mechanical exfoliation in 2004, and won the Nobel Prize in Physics in 2010. Graphene, as a two-dimensional carbon crystal with an atomic layer thickness, has excellent properties such as high electrical conductivity, high specific surface area, and high strength. [0003] The reported preparation methods of graphene are mainly chemical vapor deposition, mechanical exfoliation, redox method and so on. Among them, the preparation efficiency of chemical vapor deposition method is low, and it is difficult to achieve macro preparation. More importantly, the prepared gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/19
CPCC01P2004/04Y02P20/54
Inventor 杨应奎王相刚邱胜强何承恩雷盛张金龙
Owner 广东烯谷碳源新材料有限公司
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