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Preparation method of graphene nanobelt

A technology of graphene nanobelts and carbon nanowalls, which is applied in the field of synthesis of nanocarbon materials, can solve the problems of adverse effects of graphene nanobelts on electrical conductivity, poor quality of graphene nanobelts, and difficulty in controlling the uniformity of size.

Active Publication Date: 2014-06-25
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The graphene nanobelts prepared by this method usually introduce oxygen-containing functional groups to adversely affect the conductivity of graphene nanobelts, and the uniformity of size is difficult to control, making the quality of the graphene nanobelts finally obtained poor. , it is difficult to meet the actual demand

Method used

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  • Preparation method of graphene nanobelt
  • Preparation method of graphene nanobelt
  • Preparation method of graphene nanobelt

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preparation example Construction

[0028] see figure 1 , the preparation method of the graphene nanoribbon of an embodiment, comprises the steps:

[0029] Step S110: Etching the metal substrate with a dilute acid solution.

[0030] The metal substrate is preferably one of iron foil, nickel foil and cobalt foil.

[0031] The step of using the dilute acid solution to etch the metal substrate specifically includes: putting the metal substrate into the dilute acid solution with a concentration of 0.01 mol / L-1 mol / L and etching for 0.5-10 minutes.

[0032] Dilute acid solution is dilute hydrochloric acid solution, dilute sulfuric acid solution or dilute nitric acid solution.

[0033] Preferably, the concentration of the dilute acid solution is 0.1 mol / L-0.5 mol / L, and the etching time is 1 minute-3 minutes.

[0034] Etching the metal substrate to cause defects on the surface of the metal substrate can effectively improve the surface structure of the metal substrate to provide a favorable growth base for the carbo...

Embodiment 1

[0074] 1. Put the nickel foil in a dilute hydrochloric acid solution with a concentration of 1mol / L and etch it for 0.5 minutes. After etching, clean it with deionized water, ethanol, and acetone and dry it;

[0075] 2. Exclude the air in the reaction chamber and ventilate nitrogen gas, put the cleaned and dried nickel foil into the reaction chamber ventilated with nitrogen gas, heat the nickel foil to 900°C and keep it warm, then turn on the ultraviolet light source equipment to make the ultraviolet Light is irradiated on the surface of nickel foil, the wavelength of ultraviolet light is 250nm, and then 200 sccm of methane is passed through, the volume ratio of methane to nitrogen is 2:1, and it is kept for 100 minutes;

[0076] 3. After the reaction is completed, stop feeding methane, stop heating the nickel foil and turn off the ultraviolet light source equipment. After the reaction chamber cools down to room temperature, stop feeding nitrogen. The surface of the nickel foil...

Embodiment 2

[0084] 1. Use iron foil as the substrate, put the iron foil in a dilute sulfuric acid solution with a concentration of 0.5mol / L and etch it for 4 minutes. After etching, clean it with deionized water, ethanol, and acetone and dry it;

[0085]2. Exclude the air in the reaction chamber and pass in argon gas, put the cleaned and dried iron foil into the reaction chamber with argon gas, heat the iron foil to 600°C and keep it warm, then turn on the ultraviolet light source equipment, Let ultraviolet light irradiate on the surface of the iron foil, the wavelength of ultraviolet light is 200nm, then pass through ethane 100sccm, the volume ratio of ethane and argon is 5:1, keep for 200 minutes;

[0086] 3. After the reaction is completed, stop feeding ethane, stop heating the iron foil and turn off the ultraviolet light source equipment. After the reaction chamber cools down to room temperature, stop feeding argon gas. The surface of the iron foil will form a carbon nano-wall, and rem...

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Abstract

A preparation method of a graphene nanobelt comprises the following steps: carrying out a photocatalytic chemical vapor deposition reaction on a carbon source under the action of ultraviolet light as a photocatalyst in order to generate a carbon nanowall on an etched metal substrate, scrapping off the carbon nanowall to obtain carbon nanowall powder, carrying out a three-electrode system reaction on the carbon nanowall powder as a raw material to prepare an intercalation carbon nanowall, dispersing the intercalation carbon nanowall in an ionic liquid, and peeling by utilizing a cold and hot temperature difference to obtain the graphene nanobelt with a high dimension homogeneity. The method makes no oxygen-containing groups introduced into the finally obtained graphene nanobelt, and the graphene nanobelt with a good quality can be prepared through the method.

Description

technical field [0001] The invention relates to the field of synthesis of nano-carbon materials, in particular to a preparation method of graphene nanobelts. Background technique [0002] Graphene nanoribbons are ribbon structures formed on the basis of two-dimensional graphene planes after certain shearing. Graphene nanoribbons not only have the performance of graphene, but also have some special properties, such as its long-diameter ratio, which can be as high as thousands of times. Modified to prepare switching devices. [0003] At present, the preparation method of graphene nanobelts usually adopts the method of cutting carbon nanotubes. In this method, carbon nanotubes are first soaked in sulfuric acid, and then heated after adding a strong oxidant. Under high temperature, the strong oxidant is used to open the carbon nanotubes to obtain graphene nanobelts. The graphene nanobelts prepared by this method usually introduce oxygen-containing functional groups to adverse...

Claims

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Application Information

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IPC IPC(8): C01B31/04B82Y40/00C01B32/19
Inventor 周明杰袁新生王要兵刘大喜
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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