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Preparation method of graphene nanoribbon

A graphene nanoribbon, carbon nanotube technology, applied in graphene nanoribbon, graphene, nanocarbon and other directions, can solve the problems of large randomness and uncertainty, high production cost and energy consumption, and high equipment requirements , to achieve the effect of low equipment requirements, complete layered structure, and extended application range

Pending Publication Date: 2017-04-26
重庆锦添翼新能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The main disadvantages of this method are: the process is relatively complicated, the growth of the carbon nanotube array in the early stage of the experiment directly affects the quality of the subsequent graphene nanoribbons, and there are large random and uncertain factors; 4 / H 2 The atmosphere and the temperature are kept at 700°C to 800°C for annealing, which has high requirements for equipment, high production costs and energy consumption, and there are certain unsafe factors

Method used

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  • Preparation method of graphene nanoribbon

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Experimental program
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Effect test

Embodiment 1

[0031] The concrete steps of a kind of graphene nanoribbon preparation method are as follows:

[0032] 1) Cutting carbon nanotubes by reduction method

[0033] Using multi-walled carbon nanotubes as raw materials (diameter ~ 100nm, length ~ 50μm, carbon content 95%), under the protection of high-purity inert argon atmosphere, according to the volume of ethylene glycol dimethyl ether organic solvent and carbon nanotubes Mass ratio 3000ml: 1g Weigh a certain amount of carbon nanotubes and add them to the ethylene glycol dimethyl ether organic solvent, then measure a certain amount of sodium potassium liquid according to the mass volume ratio of carbon nanotubes to sodium potassium liquid alloy 1g: 2ml Alloy (the mass ratio of sodium and potassium in the alloy is 1g: 2g) is added to the above mixture, and stirred at room temperature for 5 days to obtain mixture 1, then the mixture 1 is subjected to suction filtration, and the solid residue is collected, according to the mass volu...

Embodiment 2

[0039] The concrete steps of a kind of graphene nanoribbon preparation method are as follows:

[0040] A kind of preparation method of graphene nanobelt, with embodiment 1, wherein

[0041] In step (1), the double-walled carbon nanotubes are used as raw materials (diameter ~ 50nm, length ~ 30 μm, carbon content 97%), the inert atmosphere is a high-purity helium atmosphere, and the organic solvent is diethylene glycol dimethyl ether , in the liquid sodium-potassium alloy, the mass ratio of sodium and potassium is 1g: 5g, the mass of carbon nanotubes: the volume of organic solvent: the ratio of the volume of sodium-potassium liquid alloy is 1g: 1500ml: 4ml, stirring at room temperature for 3 days, the mixture 1 is prepared. The solid residue was cleaned according to the mass volume ratio of the cleaning solution: 1 g: 200 ml. The order of the cleaning solution is to wash twice with tetrahydrofuran, twice with isopropanol, and twice with deionized water.

[0042] In the 2nd ste...

Embodiment 3

[0045] The concrete steps of a kind of graphene nanoribbon preparation method are as follows:

[0046] In the (1) step, the single-walled carbon nanotubes are used as raw materials (diameter ~ 2nm, length ~ 1 μm, carbon content 99%), the inert atmosphere is a high-purity nitrogen atmosphere, and the organic solvent is triethylene glycol dimethyl ether, In the liquid sodium-potassium alloy, the mass ratio of sodium to potassium is 1g:10g, the mass of carbon nanotubes:volume of organic solvent:volume of sodium-potassium liquid alloy is 1g:500ml:10ml, and stirred at room temperature for 1 day to prepare mixture 1. The solid residue was cleaned according to the mass volume ratio of the cleaning solution: 1 g: 300 ml. The order of the cleaning solution was THF 3 times, isopropanol 3 times, and deionized water 3 times.

[0047] In the (2) step, the oxidizing acid is dilute nitric acid, and the stirring time is 1h. After adding the oxidizing agent, stir at room temperature for 1h. ...

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Abstract

The invention discloses a preparation method of a graphene nanoribbon and belongs to the technical field of carbon nano functional materials. According to the preparation method of the graphene nanoribbon, a final product is prepared from a carbon nanotube as a raw material through two-step lengthwise cutting with a reduction method and an oxidation method. The method adopts a simple process, is convenient to operate, low in production cost and environment-friendly and facilitates large-scale production. The graphene nanoribbon prepared with the method has a complete structure, is high in dispersity, electric conductivity and heat conductivity and can be widely applied to synthesis of nanocomposites.

Description

technical field [0001] The invention belongs to the technical field of carbon nanometer functional materials, and in particular relates to a preparation method of graphene nanobelts. Background technique [0002] Graphene nanoribbons (GNRs) are quasi-one-dimensional ribbon-like graphene with a certain width, infinite length, and finite dimensions along the lateral direction. Graphene nanoribbons not only have the excellent properties of graphene, such as good conductivity, thinness, and hardness, but at the same time, because the electrons in the finite-sized graphene nanoribbons are limited in the lateral direction, the electrons are forced to move vertically, and they have semiconductor properties. performance. Therefore, nanobelts can be widely used in new energy devices such as supercapacitors, lithium-ion batteries, and solar cells, as well as catalyst carriers, information materials, and other fields. [0003] Existing methods for preparing graphene nanobelts, such a...

Claims

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Application Information

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IPC IPC(8): C01B32/184
CPCC01P2004/03C01B2204/06
Inventor 李新禄赵奚誉张石磊粟泽龙赵昱颉张艳艳
Owner 重庆锦添翼新能源科技有限公司
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