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Carbon nanowall and graphene nanoribbon preparation method

A technology of graphene nanobelts and carbon nanowalls, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, and can solve the problem of low conductivity

Active Publication Date: 2014-07-23
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, there are still many defects in graphene nanoribbons, resulting in low electrical conductivity.

Method used

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  • Carbon nanowall and graphene nanoribbon preparation method
  • Carbon nanowall and graphene nanoribbon preparation method
  • Carbon nanowall and graphene nanoribbon preparation method

Examples

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preparation example Construction

[0027] Such as figure 1 Shown, the preparation method of the carbon nanowall of one embodiment, comprises the steps:

[0028] Step S110: Etching the metal substrate in an acid solution with a concentration of 0.01 mol / L˜1 mol / L for 0.5 minutes˜10 minutes.

[0029] By etching the metal substrate, defects are generated on the etched surface of the metal substrate, which can effectively improve the surface structure of the metal substrate, so that carbon nanometer walls can grow on the surface of the metal substrate.

[0030] Among them, the acid solution is preferably hydrochloric acid solution, sulfuric acid solution or nitric acid solution. The concentration of the acid solution is preferably 0.1 mol / L-0.5 mol / L; the etching time of the metal substrate in the acid solution is preferably 60 seconds-180 seconds. Optimum etching conditions can achieve good etching effect and improve the growth efficiency of carbon nanowalls.

[0031] Wherein, the metal substrate may be a commo...

Embodiment 1

[0055] The preparation of the graphene nanobelt of the present embodiment is as follows:

[0056] (1) Preparation of carbon nanowalls: (a) Put the nickel foil in a hydrochloric acid solution with a concentration of 1mol / L and etch it for 0.5 minutes, and then wash it with deionized water, ethanol, and acetone in sequence after etching; (b) wash the Put the finished nickel foil into the reaction chamber, and remove the air in the reaction chamber, heat the nickel foil to 900°C, then turn on the ultraviolet light source equipment, let the ultraviolet light irradiate the surface of the nickel foil, and then pass in methane and nitrogen to keep For 100 minutes, the flow rate of methane steam was 200 sccm, and the flow ratio of methane steam to nitrogen was 2:1. After the reaction was completed, stop feeding methane steam, stop heating the nickel foil, and turn off the light source equipment. After cooling down to room temperature, the nitrogen gas flow was stopped, and the carbon ...

Embodiment 2

[0062] The preparation of the graphene nanobelt of the present embodiment is as follows:

[0063] (1) Preparation of carbon nanowalls: (a) Put the iron foil in a sulfuric acid solution with a concentration of 0.5mol / L to etch for 4 minutes, and wash it with deionized water, ethanol, and acetone in sequence after etching; (b) Put the cleaned iron foil into the reaction chamber, and remove the air in the reaction chamber, heat the iron foil to 600°C, then turn on the ultraviolet light source equipment, let the ultraviolet light irradiate the surface of the iron foil, and then pass in ethane vapor and argon for 200 minutes, wherein the flow of ethane steam is 100 sccm, and the flow ratio of ethane steam to argon is 5:1. After the reaction is completed, stop feeding ethane steam and stop heating the iron foil , and turn off the light source equipment, after the reaction chamber is cooled to room temperature, stop feeding argon gas, obtain the carbon nanowall of this embodiment on ...

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Abstract

The present invention relates to a carbon nanowall and graphene nanoribbon preparation method, which comprises steps as follows: etching a metal substrate in an acid solution with a concentration between 0.01 mol / L and 1 mol / L for 0.5 minute to 10 minutes; heating the etched metal substrate to between 600 and 900 DEG C under -oxygen-free conditions, exposing the metal substrate to ultraviolet radiation for 30 minutes to 300 minutes under flux of a carbon-containing gas and a protective gas, after the reaction, and obtaining carbon nanowalls on the surface of the metal substrate; wherein the flow rate of the carbon-containing gas is between 10 sccm to 1000 sccm, the flow rate ratio of the carbon-containing gas to the protective gas is 2 to 10:1. According to the present invention, the carbon nanowalls prepared by the method above have the characteristics of uniform thickness and more complete structure. In addition, a method for preparing graphene nanoribbons is provided.

Description

technical field [0001] The invention relates to the synthesis field of nano-carbon materials, in particular to a method for preparing a carbon nano-wall and a method for preparing a graphene nano-ribbon using the carbon nano-wall prepared by the method. Background technique [0002] Types of carbon materials include zero-dimensional fullerenes (C 60 etc.), 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 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 the characteristics of fullerene, carbon nanotubes, graphene, etc., and can be used as a raw material for preparing other carbon materials. [0003] Before the discovery of graphene, people began to study the preparation of carb...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B31/04B82Y30/00C01B32/162
Inventor 周明杰袁新生王要兵吴凤
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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