Method for preparing composition of carbon nano tube and graphene by using sheet material

A carbon nanotube and lamellar material technology, applied in the field of new materials and their preparation, can solve the problems of poor quality of carbon nanotubes and affect performance expression, and achieve the effect of facilitating engineering scale-up and mass production

Active Publication Date: 2012-09-19
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the strong interaction between metal nanoparticles and graphene at high temperature, the q

Method used

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  • Method for preparing composition of carbon nano tube and graphene by using sheet material
  • Method for preparing composition of carbon nano tube and graphene by using sheet material
  • Method for preparing composition of carbon nano tube and graphene by using sheet material

Examples

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Effect test

Embodiment 1

[0026] Example 1: Using FeMgAl LDH as a catalyst to prepare a carbon nanotube and graphene composite through a fixed bed.

[0027] FeMgAl LDHs with a Fe content of 10% was used as a catalyst, and 50 mg was uniformly spread in a porcelain boat, and then placed in a tubular fixed-bed reactor. Argon was used as the carrier gas with a flow rate of 600 sccm. Under this atmosphere, the temperature of the reactor was raised from room temperature to 950°C; after that, the reaction temperature was maintained at 950°C, and a mixture of carbon source methane, hydrogen and argon was introduced, wherein the partial pressure of carbon source methane was 80%, A chemical vapor deposition process is performed to simultaneously deposit carbon nanotubes and graphene. After 20min, turn off the carbon source methane and H 2 , the solid phase product was removed after cooling to room temperature under an argon atmosphere. The solid phase product is first treated with 3mol / L NaOH aqueous solution...

Embodiment 2

[0028] Example 2: Using FeMgAl LDH as a catalyst to prepare a carbon nanotube and graphene composite through a fixed bed.

[0029] FeMgAl LDHs with a Fe content of 50% was used as a catalyst, and 50 mg was evenly spread in a porcelain boat, and then placed in a tubular fixed-bed reactor. Argon was used as the carrier gas with a flow rate of 600 sccm. Under this atmosphere, the temperature of the reactor was raised from room temperature to 1200 ° C; after that, the reaction temperature was maintained at 1200 ° C, and a mixture of carbon source methane and argon was introduced, wherein the partial pressure of carbon source methane was 80%, and the chemical reaction was carried out. Graphene is deposited by a vapor deposition process. After 10 minutes, the carbon source methane was turned off, and the reactor was cooled to 750°C under an argon atmosphere, and then a mixture of carbon source ethylene, hydrogen and argon was introduced, wherein the partial pressure of carbon sourc...

Embodiment 3

[0030] Example 3: Using FeMoMgAl LDH as a catalyst to prepare a carbon nanotube and graphene composite through a fixed bed.

[0031] FeMoMgAl LDHs with a Fe content of 20% and a Mo content of 0.2% were used as catalysts, and 50 mg of FeMoMgAl LDHs was evenly spread in a porcelain boat, and then placed in a tubular fixed-bed reactor. Nitrogen was used as the carrier gas with a flow rate of 600 sccm. In this atmosphere, the temperature of the reactor was raised from room temperature to 750°C, and then a mixture of carbon source propylene, hydrogen and nitrogen was introduced, wherein the partial pressure of carbon source propylene was 10%, and the chemical vapor deposition process was carried out to deposit carbon nanometers. Tube. After 30min, turn off the carbon source propylene and H 2 After that, the temperature of the reactor was raised to 1000°C, and then a mixed gas of carbon source methane and argon was introduced, wherein the partial pressure of carbon source methane ...

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Abstract

The invention relates to a method for preparing composition of a carbon nano tube and graphene by using a sheet material; the composition comprises the carbon nano tube and the graphene material, wherein the carbon nano tube directly grows on the surface of graphene. According to the preparation method, the sheet material loaded with a catalyst active component is used as a catalyst, the carbon nano tube and the graphene are deposited on the sheet material by chemical vapor deposition, and the composition of carbon nano tube and graphene can be obtained after purification. The method enriches the variety of nano carbon materials; and the method can be easily applied to industrial production to realize batch production, thus promoting the application study of the composition of carbon nano tube and graphene.

Description

technical field [0001] The invention relates to a method for preparing a carbon nanotube and graphene composite, in particular to a method for preparing a carbon nanotube and graphene composite based on a sheet material. It belongs to the technical field of new materials and their preparation. Background technique [0002] Carbon nanotubes and graphene are the most common and most widely studied carbon nanomaterials. Among them, carbon nanotubes can be regarded as a one-dimensional tubular structure formed by curling one or more layers of graphene sheets. The carbon atoms in the ideal carbon nanotube and graphene structures are all sp 2 Hybrid bonding method, their structural characteristics determine their excellent performance in electromagnetics, mechanics, thermals, etc., so that they have a wide range of application prospects in the fields of electronic devices, composite materials, thermal conductive materials, drug delivery, sensors, etc. . In addition, the huge s...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B31/04B82Y30/00B82Y40/00C01B32/162C01B32/17C01B32/186C01B32/196
Inventor 魏飞赵梦强张强田桂丽
Owner TSINGHUA UNIV
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