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Preparation method of carbon nanowall powder, and preparation method of graphene nanobelt

A technology of graphene nanobelts and carbon nanowalls, applied in the field of nanocarbon material synthesis, can solve problems such as CNW structure damage

Active Publication Date: 2014-06-25
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, whether it is an early preparation method or a recent preparation method, it will involve a reaction in a plasma atmosphere, and this preparation method will cause certain damage to the structure of CNW.

Method used

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  • Preparation method of carbon nanowall powder, and preparation method of graphene nanobelt
  • Preparation method of carbon nanowall powder, and preparation method of graphene nanobelt
  • Preparation method of carbon nanowall powder, and preparation method of graphene nanobelt

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preparation example Construction

[0030] see figure 1 , the preparation method of the carbon nanowall powder of an embodiment, comprises the steps:

[0031] Step S110: Etching the metal substrate with a dilute acid solution.

[0032] The metal substrate is preferably one of iron foil, nickel foil and cobalt foil.

[0033] 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.

[0034] Dilute acid solution is dilute hydrochloric acid solution, dilute sulfuric acid solution or dilute nitric acid solution.

[0035] 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.

[0036] 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 ca...

Embodiment 1

[0073] (1) Preparation of carbon nanowall powder

[0074] 1. Use nickel foil as the substrate, put the nickel foil into 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 200nm, 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 chamb...

Embodiment 2

[0083] (1) Preparation of carbon nanowall powder

[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 iron foil, the wavelength of ultraviolet light is 300nm, 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 th...

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Abstract

The invention provides a preparation method of carbon nanowall powder. The method comprises the following steps: etching a metal substrate by a dilute acid solution; heating the metal substrate in anoxic and first protection gas atmosphere to 600-900DEG C; introducing one of methane, ethane, propane, acetylene and ethanol to the surface of the metal substrate under the irradiation of ultraviolet light, and carrying out a photocatalytic chemical vapor deposition reaction for 30-300min to generate a carbon nanowall on the surface of the metal substrate; and cooling the metal substrate attached with the carbon nanowall in the first protection gas atmosphere to room temperature, and scraping off the carbon nanowall from the surface of the metal substrate to obtain the carbon nanowall powder. The carbon nanowall with a complete structure can be obtained through the method. The invention also provides a preparation method of a graphene nanobelt.

Description

technical field [0001] The invention relates to the field of synthesis of nano-carbon materials, in particular to a method for preparing carbon nano-wall powder and a method for preparing graphene nano-ribbons. Background technique [0002] The types of carbon materials include zero-dimensional fullerene, one-dimensional carbon nanotubes, carbon nanofibers, etc., two-dimensional graphene, three-dimensional graphite, diamond, etc. Carbon nanowall (CNW) is a two-dimensional The most typical morphology of diffused carbon nanostructures is the 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 preparation Raw materials for other carbon materials. [0003] Before the discovery of graphene, people began to study the preparation of carbon nanowalls. But whether it is the early preparation method or the recent preparatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/04B82Y30/00C01B32/15C01B32/19
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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