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Preparation method for graphene nanobelt

A technology of graphene nanoribbons and carbon nanotubes, which is applied in the field of synthesis of new carbon materials, can solve the problems of graphene nanoribbon size control difficulties and low output, and achieve green and pollution-free preparation, high production efficiency, and maintain excellent performance Effect

Active Publication Date: 2014-03-12
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, due to the difficulty in controlling the size of graphene nanoribbons and the low yield, its application is limited.

Method used

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  • Preparation method for graphene nanobelt
  • Preparation method for graphene nanobelt

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of preparation method of graphene nanobelt provided by the invention comprises the following steps:

[0029] (1) Add 1g of multi-walled carbon nanotubes (hereinafter referred to as carbon nanotubes) successively into 20ml of 0.5mol / L hydrochloric acid and stir for 30min, after filtering, add 200ml of 0.1mol / L sodium hydroxide solution and stir for 30min, and the filtered filtrate It can be used repeatedly to remove impurities and oil, and at the same time slightly corrode the carbon nanotubes, then filter and wash with deionized water until the filtrate is neutral; then soak in ethanol and acetone in turn and treat with 200w ultrasonic wave for 30min, then use ethanol Soak and sonicate with 200w ultrasonic wave for 30min, filter and soak with acetone and treat with 200w ultrasonic wave for 30min, then filter and dry at 80°C for 6 hours in a vacuum drying oven to obtain pretreated carbon nanotubes;

[0030] (2) under nitrogen protection, the pretreated carbon nano...

Embodiment 2

[0033] A preparation method of graphene nanoribbons, comprising the following steps:

[0034] (1) Add 1g of single-walled carbon nanotubes (hereinafter referred to as carbon nanotubes) successively into 50ml of 1mol / L nitric acid and stir for 10min, add 100ml of 0.5mol / L potassium hydroxide solution after filtration and stir for 15min, the filtered filtrate can be Repeated use to remove impurities and oil, while slightly corroding the carbon nanotubes, then filter and wash with deionized water until the filtrate is neutral; then soak in methanol and acetone respectively and treat with 400w ultrasonic wave for 10min, after filtration, in drying in a vacuum oven at 90°C for 5 hours to obtain pretreated carbon nanotubes;

[0035] (2) under argon protection, the pretreated carbon nanotubes obtained in step (1) (bulk density is 0.03g / cm 3 ) placed in a muffle furnace, heated to 1100°C at a rate of 100°C / min, and then held for 5 minutes to heat the carbon nanotubes evenly, and then...

Embodiment 3

[0038] A preparation method of graphene nanoribbons, comprising the following steps:

[0039] (1) Add 1g of double-walled carbon nanotubes (hereinafter referred to as carbon nanotubes) successively into 100ml of 0.8mol / L sulfuric acid and stir for 20min, after filtering, add 20ml of 0.5mol / L sodium hydroxide solution and stir for 25min, and the filtered filtrate It can be reused to remove impurities and oil, and at the same time slightly corrode the carbon nanotubes, then filter and wash with deionized water until the filtrate is neutral; then soak in ethanol and acetone respectively and use 300w ultrasonic ultrasonic treatment for 20min, after filtration drying in a vacuum oven at 100°C for 4 hours to obtain pretreated carbon nanotubes;

[0040] (2) under nitrogen protection, the pretreated carbon nanotubes obtained in step (1) (bulk density is 0.04g / cm 3 ) placed in a muffle furnace, heated to 1200°C at a rate of 80°C / min and then held for 5 minutes to heat the carbon nanot...

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Abstract

The invention provides a preparation method for a graphene nanobelt. The preparation method comprises the following steps: successively putting a carbon nanotube into an acid solution and an alkaline solution and carrying out stirring, then carrying out filtering, cleaning the carbon nanotube, soaking the carbon nanotube with an organic solvent, subjecting the carbon nanotube to ultrasonic treatment and drying the carbon nanotube after filtering so as to obtain a pretreated carbon nanotube; and then under the protection of inert gas, heating the pretreated carbon nanotube to a temperature of 1000 to 1200 DEG C, maintaining the carbon nanotube at the temperature for 3 to 5 min, then rapidly transferring the carbon nanotube to a low temperature environment with a temperature of -70 to -200 DEG C, standing the carbon nanotube in the environment for 5 to 30 min, then rapidly putting the carbon nanotube to a muffle furnace with a temperature of 1000 to 1200 DEG C in an inert atmosphere, maintaining the temperature of the muffle furnace for 0.5 to 30 min and cooling the carbon nanotube to room temperature under the protection of inert gas so as to obtain the graphene nanobelt. The length-diameter rate of the graphene nanobelt can be controlled by adjusting the diameter and the length of the carbon nanotube; the preparation method has the advantages of short preparation time, high preparation efficiency and low cost; and the graphene nanobelt maintains original excellent performance of the carbon nanotube.

Description

technical field [0001] The invention relates to the field of synthesis of novel carbon materials, in particular to a method for preparing graphene nanobelts. Background technique [0002] Graphene nanoribbons not only have the excellent electrical conductivity, thermal conductivity and low thermal expansion coefficient of graphene, but also have some special properties, such as their large aspect ratio, which can be as high as thousands of times, and can replace copper wires in integrated circuits. To improve the integration level, the structure can also be modified to prepare switching devices. At present, due to the difficulty in controlling the size of graphene nanoribbons and the low yield, its application is limited. Contents of the invention [0003] In order to solve the above problems, the present invention aims to provide a preparation method of graphene nanobelts, in which the aspect ratio of graphene nanobelts can be controlled by adjusting the diameter and len...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B82Y30/00C01B32/184
Inventor 周明杰袁新生王要兵
Owner OCEANS KING LIGHTING SCI&TECH CO LTD