Low-temperature preparation method of hydroxy-functionalized graphene

A functional and fossil technology, applied in nanotechnology and other directions, can solve problems such as high risk and achieve the effect of high degree of crystallization

Inactive Publication Date: 2011-10-26
WENZHOU MEDICAL UNIV
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  • Abstract
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Problems solved by technology

[0004] In order to solve the technical problem that existing graphene preparation methods require high-temperature catalysis to cause high risk, the present invention provides a low-temperature preparation method of hydroxyl-functionalized graphene

Method used

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  • Low-temperature preparation method of hydroxy-functionalized graphene
  • Low-temperature preparation method of hydroxy-functionalized graphene
  • Low-temperature preparation method of hydroxy-functionalized graphene

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Embodiment Construction

[0018] Add 10mg of -100 mesh flake graphite powder and 200mg of potassium hydroxide solid into a 250ml agate ball milling tank, add dry agate balls with a diameter of 3mm for ball milling, and the amount added is about 30% of the volume of the agate ball milling tank one fifth. Then put the ball mill jar into the ball mill, under the condition of air blast and normal temperature, ball mill continuously at a speed of 200-400 rpm for 10-16 hours, then transfer the ball mill product to a 20ml sample bottle with 10ml of deionized water . Then put it into a dialysis bag and repeatedly replace deionized water to remove unreacted potassium hydroxide until the solution is neutral. Hydroxygraphene with good dispersibility is obtained.

[0019] The dispersion liquid was dropped on a flat single crystal silicon wafer, put into a vacuum drying oven with a vacuum degree of 0.1 Pa, and dried overnight. The chemical structure of the graphene surface was measured by Fourier transform infra...

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Abstract

The invention relates to a novel and simple low-temperature preparation method of hydroxy-functionalized grapheme, belonging to the field of novel carbon nanomaterials. The preparation method provided by the invention comprises the following steps of: adding graphite powder and potassium hydroxide solid to a ball milling tank, then adding milling balls to the ball milling tank, placing the ball milling tank in a ball mill, continuously ball-milling under air blast and room temperature conditions at a speed of 200-400 r / min for 10-16 hours, transferring the ball-mill product to a sample bottle by deionized water, and then removing unreacted potassium hydroxide by deionized water until the solution was neutral. By using the preparation method provided by the invention, hydroxy-functionalized grapheme can be prepared at room temperature, and the hydroxy-functionalized grapheme has a lamellar structure, contains a large number of hydroxyl groups on the surface, well remained internal structure and a high crystallinity.

Description

technical field [0001] The invention relates to a novel and convenient low-temperature preparation method of hydroxyl-functionalized graphene, which belongs to the field of novel carbon nanomaterials. Background technique [0002] Graphene is a two-dimensional carbon atomic structure discovered in recent years. The thickness of a single layer of graphite is only one atom thick, and it has become one of the most popular research fields. Graphene is also the basic structural unit of zero-dimensional fullerene, one-dimensional carbon nanotube and three-dimensional graphite, so it has many unique properties. Such as large specific surface area, excellent electronic conductivity properties, excellent mechanical properties and ultra-light weight. These unique properties make it have great application potential in the fields of biotechnology and life science, and it is also the best material for making nanoelectronic devices—radio frequency transistors. In addition, its functiona...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B82Y40/00
Inventor 刘勇曾超戴黎明瞿佳陈浩
Owner WENZHOU MEDICAL UNIV
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