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Preparation method of graphene nanoribbons

A technology of graphene nanobelts and carbon nanowalls, which is applied in the field of preparation of graphene nanobelts, can solve the problems of difficult size control and low yield, and achieve the effects of simple preparation process, lower reaction temperature and high yield

Active Publication Date: 2015-11-25
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

However, due to the difficulty in size control and low yield during the preparation of graphene nanoribbons, its further application is limited.

Method used

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  • Preparation method of graphene nanoribbons
  • Preparation method of graphene nanoribbons
  • Preparation method of graphene nanoribbons

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preparation example Construction

[0025] Such as figure 1 Shown, the preparation method of the graphene nanoribbon of one embodiment, comprises the steps:

[0026] Step 110, performing acid treatment on the metal substrate.

[0027] In this embodiment, the acid-treated metal substrate is prepared by the following steps: put the metal substrate to be treated in an acid solution with a concentration of 0.01-1 mol / L and etch for 0.5-10 minutes, and then use Ionized water, ethanol and acetone are used for cleaning to obtain the acid-treated metal substrate. Wherein, the acid solution may be dilute hydrochloric acid solution, dilute sulfuric acid solution or dilute nitric acid solution; the concentration of the acid solution is preferably 0.1-0.5 mol / L; the acid treatment time is preferably 1.0-3.0 minutes. The short acid treatment time can improve the production efficiency of the carbon nanowall.

[0028] Step 120, placing the acid-treated metal substrate in an oxygen-free environment, heating it to 600-900° C....

Embodiment 1

[0043] The nickel foil was etched in a dilute hydrochloric acid solution with a concentration of 1 mol / L for 0.5 minutes, and then the etched nickel foil was cleaned with deionized water, ethanol, and acetone in sequence. Put the cleaned and etched nickel foil into the reaction chamber, and remove the air in the reaction chamber, then heat the etched nickel foil to 900°C, and then turn on the ultraviolet light source equipment to make the ultraviolet Light was irradiated on the surface of the etched nickel foil, and then 200 sccm of methane and 100 sccm of nitrogen gas were passed through for 100 minutes. After the reaction is completed, first stop feeding methane, then stop heating the etched nickel foil and turn off the ultraviolet light source equipment; stop feeding nitrogen after the reaction chamber is cooled to room temperature, and obtain The carbon nanometer wall on the surface of the nickel foil is scraped off from the surface of the nickel foil after etching to obta...

Embodiment 2

[0048] The iron foil was etched in a dilute sulfuric acid solution with a concentration of 0.5 mol / L for 4 minutes, and then the etched iron foil was cleaned with deionized water, ethanol, and acetone in sequence. Put the cleaned and etched iron foil into the reaction chamber, and remove the air in the reaction chamber, then heat the etched iron foil to 600°C, and then turn on the ultraviolet light source equipment to make the ultraviolet Light was irradiated on the surface of the etched iron foil, and then 100 sccm of ethane and 20 sccm of argon gas were passed through, and kept for 200 minutes. After the reaction is completed, first stop feeding ethane, then stop heating the etched iron foil and turn off the ultraviolet light source equipment; stop feeding the argon after the reaction chamber is cooled to room temperature, and obtain the argon attached to the etched foil. The carbon nanometer wall on the surface of the iron foil is scraped off from the surface of the etched ...

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Abstract

The invention relates to a preparation method of a graphene nanoribbon. The preparation method comprises the following steps: subjecting a metal substrate to acid treatment; placing the metal substrate in an oxygen-free environment, heating the metal substrate, introducing a protective gas under a condition of UV irradiation to carry out chemical vapor deposition reaction with a gas carbon-containing substance, obtaining a carbon nano-wall attached to the surface of the metal substrate after the chemical vapor deposition reaction stops; mixing the carbon nano-wall powder with ionic liquid to prepare a carbon nano-wall ionic liquid solution with a concentration of 1-200 g / L; and adding the carbon nano-wall ionic liquid solution into a ball milling container, adding grinding balls having a diameter of 5-20 nm into the ball milling container, ball-milling the carbon nano-wall ionic liquid solution at the rotation speed of 200-1000 rpm, separating the grinding balls from the carbon nano-wall ionic liquid solution after ball milling ends, subjecting the carbon nano-wall ionic liquid solution to centrifugal treatment, obtaining the mixture of the graphene nanoribbon and the ionic liquid solution, and finally obtaining the graphene nanoribbon after a separation and purification process. The size of the graphene nanoribbon produced by the above preparation method can be adjustable.

Description

technical field [0001] The invention relates to the field of nano-carbon materials, in particular to a method for preparing graphene nanobelts. Background technique [0002] Types of carbon materials include zero-dimensional fullerenes (C 60 ), one-dimensional carbon nanotubes, carbon nanofibers, etc., two-dimensional graphene, three-dimensional graphite, diamond, etc., carbon nanowall (carbon nanowall, CNW) is a carbon nanostructure with two-dimensional diffusion, the most typical Morphology is a wall-like structure that grows perpendicular to the surface of the substrate material and is thicker than graphene. It is completely different from fullerene, carbon nanotubes, graphene, etc., and can be used as a raw material for preparing other carbon materials, such as graphite ene nanobelts, etc. [0003] Graphene nanoribbons not only have the performance of graphene, but also have some special properties, such as its relatively large aspect ratio, which can be as high as tho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/04B82Y30/00C01B32/19
Inventor 周明杰袁新生王要兵吴凤
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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