Preparation method of high-crystallinity double-walled carbon nano tube

A technology of double-wall carbon nanotubes and high crystallinity, which is applied in the field of preparation of high-crystallinity double-wall carbon nanotubes, can solve the problems of wide distribution of double-wall carbon nanotube diameters, inability to mass-produce, and insufficient crystallinity. Achieve the effects of small average diameter, high crystallinity and narrow pipe diameter distribution
CN101941692BInactive Publication Date: 2012-05-23SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2012-05-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a preparation method of a high-crystallinity double-walled carbon nano tube, belonging to the technical field of preparation processes of carbon nano tube materials. The preparation method is characterized in that the carbon nano tube is prepared by adopting an anodic carbon electrode bar containing an iron catalyst and realizing the arc discharge between a negative electrode and a positive electrode by using an arc discharging method under a discharging atmosphere of hydrogen or mixed gas of hydrogen and argon, and meanwhile, the double-walled carbon nano tube is purified under the high-temperature treatment of hydrogen and air so as to finally obtain the double-walled carbon nano tube with purity above 90 percent. The prepared double-walled carbon nano tube has the advantages of high crystallinity, narrow caliber distribution, small average diameter and high purity.
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Description

technical field

[0001] The invention relates to a method for preparing a highly crystalline double-walled carbon nanotube, which belongs to the technical field of carbon nanotube material preparation technology. Background technique

[0002] Double-walled carbon nanotubes are a type of multi-walled carbon nanotubes, a type of transition from single-walled carbon nanotubes to multi-walled carbon nanotubes, and are the simplest multi-walled carbon nanotubes. At the same time, because the diameter of double-walled carbon nanotubes is close to that of single-walled carbon nanotubes, the electrical, optical, and mechanical properties of double-walled carbon nanotubes are also close to those of single-walled carbon nanotubes, and it also has the advantages of multi-walled carbon nanotubes. . For example: double-walled carbon nanotubes have similar durability and oxidation resistance as multi-walled carbon nanotubes, and can exhibit the same electrical, optical, mechanical and qua...

Claims

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