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Preparation method of graphene nanoribbons

A technology of graphene nanobelts and carbon nanowalls, applied in the field of synthesis of nanocarbon materials, can solve the problem of low electrical conductivity

Active Publication Date: 2016-01-13
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, at present, there are still many defects in graphene nanoribbons, resulting in low electrical conductivity.

Method used

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

Examples

Experimental program
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preparation example Construction

[0024] Such as figure 1 As shown, a method for preparing graphene nanoribbons according to an embodiment includes the following steps:

[0025] Step S110: Place the metal substrate in an acid solution with a concentration of 0.01 mol / L to 1 mol / L and etch for 0.5 minutes to 10 minutes; under oxygen-free conditions, heat the etched metal substrate to 600°C to 900°C , Use ultraviolet light to irradiate the surface of the metal substrate, and pass in carbon-containing gas and protective gas for 30 minutes to 300 minutes. After the reaction, carbon nano-walls are obtained on the surface of the metal substrate; where the flow of carbon-containing gas It is 10 sccm (ml per minute in standard state) ~ 1000 sccm, and the flow ratio of carbon-containing gas to shielding gas is 2 to 10:1. After the reaction is completed, the introduction of carbon-containing gas is stopped, heating and ultraviolet light irradiation are stopped, and after cooling to room temperature, carbon nanowalls are ob...

Embodiment 1

[0048] The preparation of the graphene nanoribbons of this embodiment is as follows:

[0049] (1) Preparation of carbon nanowall: (a) Put the nickel foil in a hydrochloric acid solution with a concentration of 1 mol / L and etch for 0.5 minutes. After etching, wash with deionized water, ethanol, and acetone in sequence; (b) Wash After putting the nickel foil into the reaction chamber and venting the air in the reaction chamber, heat the nickel foil to 900°C, then turn on the ultraviolet light source device to irradiate the surface of the nickel foil with ultraviolet light, and then pass in methane and nitrogen to maintain For 100 minutes, the flow of methane steam is 200sccm, and the flow ratio of methane steam to nitrogen is 2:1. After the reaction is completed, stop the methane steam, stop heating the nickel foil, and turn off the light source equipment. Wait for the reaction chamber After cooling to room temperature, the introduction of nitrogen gas was stopped, and the carbon n...

Embodiment 2

[0055] The preparation of the graphene nanoribbons of this embodiment is as follows:

[0056] (1) Preparation of carbon nanowall: (a) Put the iron foil into a sulfuric acid solution with a concentration of 0.5 mol / L and etch for 4 minutes. After etching, use deionized water, ethanol, and acetone to clean; (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 to irradiate the surface of the iron foil with ultraviolet light, and then pass in ethane vapor And argon, keep for 200 minutes, where the flow rate of ethane vapor is 100sccm, and the flow ratio of ethane vapor to argon is 5:1. After the reaction is completed, stop feeding ethane vapor and stop heating the iron foil , And turn off the light source equipment. After the reaction chamber is cooled to room temperature, stop passing argon gas to obtain the carbon nano wall of this embodiment on the surfac...

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Abstract

A preparation method of a graphene nanoribbon comprises the following steps: preparing a carbon nanowall; mixing the carbon nanowall with a metal intercalation agent in a mol ratio of 1-5:1 in an oxygen-free environment and heating the mixture to 200-1000 DEG C in a vacuum environment, maintaining the temperature, and carrying out reactions for 12-120 hours, so as to obtain a metal intercalation carbon nanowall, wherein the metal intercalation agent is at least one of lithium, sodium, potassium, magnesium, calcium, rubidium, strontium and barium; mixing the metal intercalation carbon nanowall with an ionic liquid in a mass volume ratio of 1 g:10-100 ml, treating the mixture with ultrasonic wave with the power of 2000-10000 W for 0.5-30 minutes, so as to obtain a reaction liquid; and filtering the reaction liquid to obtain the graphene nanoribbon. The graphene nanoribbon prepared by the preparation method has relatively high conductivity.

Description

Technical field [0001] The invention relates to the synthesis field of nano carbon materials, in particular to a method for preparing graphene nanobelts. Background technique [0002] The types of carbon materials are zero-dimensional fullerenes (C 60 Etc.), one-dimensional carbon nanotubes, carbon nanofibers, etc., two-dimensional graphene, three-dimensional graphite, diamond, etc., carbon nanowall (CNW) is a carbon nanostructure with two-dimensional diffusion, which is the most typical The morphology is that it grows perpendicular to the surface of the base material and is thicker than the wall-like structure of graphene. It is completely different from fullerenes, carbon nanotubes, graphene, etc., and can be used as a raw material for preparing other carbon materials. [0003] People began to study the preparation of carbon nanowalls long before the discovery of graphene. In 2002, there were literature reports on the preparation of carbon nanowalls and their related application...

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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