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Preparation method of nitrogen doped carbon-nanotube-structure-like carbon material

A technology of carbon nanotube structure and nitrogen doping, applied in the direction of nano-carbon, chemical instruments and methods, carbon compounds, etc., can solve the problems of short length and inability to obtain carbon nanotubes, and achieve long length, simple preparation method, heavy weight good effect

Inactive Publication Date: 2019-07-26
王干
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the carbon nanotubes prepared by this method currently use Fe as the main catalytic element, which cannot obtain single-walled / thin-walled carbon nanotubes, and the length is extremely short

Method used

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  • Preparation method of nitrogen doped carbon-nanotube-structure-like carbon material
  • Preparation method of nitrogen doped carbon-nanotube-structure-like carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh urea, nickel powder and cobalt powder according to the mass ratio of 1:0.5:1, and mix them evenly in a ball mill by wet mixing; then put the above powder into a porcelain boat, and set the heating program of the muffle furnace , under the protection of argon, first raise the temperature to 550°C at a heating rate of 5°C / min, keep at this temperature for 3.5h, then continue to raise the temperature to 900°C at a heating rate of 2°C / min, and keep at this temperature again 2h. When the time is up, turn off the power, wait for the product to drop to room temperature with the furnace temperature, take it out and wash it with 2M hydrochloric acid, and then wash it with ethanol. After repeated washing 3 times, place the product in an oven at 100°C to dry.

Embodiment 2

[0026] Take dicyandiamide, nickel powder and cobalt powder according to mass ratio 1:0.4:0.8, adopt the mode of wet mixing, it is mixed uniformly in ball mill; The heating program, under the protection of argon, first raise the temperature to 550°C at a heating rate of 5°C / min, keep at this temperature for 3.5h, and then continue to raise the temperature to 900°C at a heating rate of 2°C / min, at this temperature Keep warm for 2h again. When the time is up, turn off the power, wait for the product to drop to room temperature with the furnace temperature, take it out and wash it with 2M hydrochloric acid, and then wash it with ethanol. After repeated washing 3 times, place the product in an oven at 100°C to dry.

Embodiment 3

[0028] Take dicyandiamide, nickel powder and cobalt powder according to mass ratio 1:0.6:0.8, adopt the mode of wet mixing, it is mixed uniformly in ball mill; Heating program, under the protection of argon, first raise the temperature to 600°C at a heating rate of 5°C / min, keep at this temperature for 3 hours, then continue to raise the temperature to 850°C at a heating rate of 2°C / min, and then again at this temperature Keep warm for 2h. When the time is up, turn off the power, wait for the product to drop to room temperature with the furnace temperature, take it out and wash it with 2M hydrochloric acid, and then wash it with ethanol. After repeated washing 3 times, place the product in an oven at 100°C to dry.

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Abstract

The invention relates to a nitrogen doped carbon-nanotube-structure-like thin carbon material. The nitrogen doped carbon-nanotube-structure-like thin carbon material has properties similar to those ofcarbon nanotubes, but the preparation method of the carbon material is simpler as compared with an existing method. The prepared carbon material is better in performance as compared with current nitrogen doped carbon nanotubes. The preparation method mainly includes: a carbon-nitrogen-source compound is decomposed under the effect of catalyst Ni to produce thin nanosheets through two-step reaction, and the obtained nanosheets are converted into tubular structures under the effect of catalyst Co through bending and closing to obtain the carbon-nanotube-structure-like thin carbon material. Froma macro perspective, the material has a tubular structure identical with the carbon nanotubes, and carbon layer thickness can be controlled by controlling the use amount of the catalyst Ni so as to obtain the thin nanosheets.

Description

technical field [0001] The invention relates to the technical field of carbon material preparation, in particular to a doped carbon material, especially a nitrogen-doped carbon nanotube-like carbon material. Background technique [0002] Carbon nanotube is a well-known one-dimensional carbon nanomaterial with good electrical conductivity, mechanical properties, optical properties and chemical stability. Similar to graphene, the carbon atoms in it are sp 2 The hybridization method is the main method, but the carbon nanotubes also include some sp 3 Hybridized carbon atoms, which make the carbon nanotubes have a large range of large π bonds, so that the carbon nanotubes have good composite properties. [0003] Generally speaking, carbon nanotubes are divided into single-walled carbon nanotubes (SWCNT) and multi-walled carbon nanotubes (MWCNT) according to their composition. According to their semiconductor properties, carbon nanotubes are divided into metallic carbon nanotube...

Claims

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Application Information

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IPC IPC(8): C01B32/15C01B32/162
CPCC01B32/15C01B32/162
Inventor 王干宁小伟张亮张红
Owner 王干
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