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Method for preparing graphene nanobelt

A technology of graphene nanoribbons and carbon nanotubes, which is applied in the field of preparation of graphene nanoribbons, and can solve problems such as application limitations and lack of band gaps

Inactive Publication Date: 2010-12-15
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the lack of effective bandgap of graphene material itself, its application in electronic devices (such as field effect transistors, etc.) is limited.

Method used

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  • Method for preparing graphene nanobelt
  • Method for preparing graphene nanobelt
  • Method for preparing graphene nanobelt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] 1. Place the multi-walled carbon nanotubes in air for calcination at 300°C for 1 hour, then place them in a tube furnace with argon-hydrogen mixture and heat at 800°C for 1 hour;

[0024] 2. Add carbon nanotubes to 12mol / L concentrated hydrochloric acid and reflux at 200 degrees for 4 hours, then filter and clean the carbon tubes until neutral, and dry at 70 degrees;

[0025] 3. In an argon-protected glove box, weigh the elemental potassium and carbon nanotubes according to the mass ratio of 3:1 (30mg potassium with 10mg carbon nanotubes) and put them into a glass tube to vacuumize and seal;

[0026] 4. Put the sealed glass tube into the muffle furnace and heat it at 100 degrees for 8 hours, and take it out after cooling;

[0027] 5. After breaking the glass tube, quickly put it into a beaker filled with 500mL water;

[0028] 6. Filter and wash the reacted product, and dry it at 80°C.

Embodiment 2

[0030] 1. Place the single-walled carbon nanotubes in the air for calcination at 400 degrees for 1 hour, and then place them in a tube furnace with argon-hydrogen mixture and heat them at 900 degrees for 1 hour;

[0031] 2. Add carbon nanotubes to 12mol / L concentrated hydrochloric acid and reflux at 100°C for 4 hours, then filter and clean the carbon nanotubes until neutral, and dry at 80°C;

[0032] 3. In an argon-protected glove box, weigh the elemental potassium and carbon nanotubes according to the mass ratio of 2:1 (20mg potassium with 10mg carbon nanotubes) and put them into a glass tube to vacuumize and seal;

[0033] 4. Put the sealed glass tube into the muffle furnace and heat it at 200 degrees for 8 hours, and take it out after cooling;

[0034] 5. After breaking the glass tube, quickly put it into a beaker filled with 500mL ethanol;

[0035] 6. Filter and wash the reacted product, and dry it at 80°C.

Embodiment 3

[0037] 1. Place the double-walled carbon nanotubes in the air for calcination at 500 degrees for 1 hour, and then place them in a tube furnace with argon-hydrogen mixture and heat them at 1000 degrees for 1 hour;

[0038] 2. Add carbon nanotubes to 12mol / L concentrated hydrochloric acid and reflux at 300 degrees for 5 hours, then filter and clean the carbon tubes until neutral, and dry at 100 degrees;

[0039] 3. In the argon-protected glove box, weigh the elemental lithium and carbon nanotubes according to the mass ratio of 1:1 (10mg lithium with 10mg carbon nanotubes) and put them into a glass tube to vacuumize and seal;

[0040] 4. Put the sealed glass tube into the muffle furnace and heat it at 300 degrees for 9 hours, and take it out after cooling;

[0041] 5. After breaking the glass tube, quickly put it into a beaker filled with 500mL12mol / L concentrated hydrochloric acid;

[0042] 6. Filter and wash the reacted product, and dry it at 80°C.

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Abstract

The invention relates to a method for preparing a graphene nanobelt. The method comprises the following steps of: (1) placing a carbon nano tube in air and calcining the carbon nano tube at the temperature of 400 DEG C for 1 hour, then placing the calcined product in a tube furnace with argon-hydrogen gas mixture and heating the calcined product at the temperature of 900 DEG C for 1 hour; (2) adding well treated carbon nano tube into 12mol / L concentrated hydrochloric acid for refluxing for 4 hours at the temperature of 100 DEG C, making the carbon tube neutral by filtering and cleaning and drying the neutral carbon tube at the temperature of 800 DEG C; (3) mixing alkali metals and the carbon nano tube in a mass ratio of 2:1, and reacting the mixture with solvents by an alkali metal melting method or an electrochemical process; and (4) filtering and cleaning the product and drying the product at the temperature of 80 DEG C to obtain the graphene nanobelt. The method is simple and easy to apply and is suitable for mass production. The prepared graphene nanobelt has the advantages of smooth edge and a small number of defects.

Description

technical field [0001] The invention belongs to the field of graphene preparation, in particular to a preparation method of graphene nanobelts. Background technique [0002] It has only been five years since graphene was discovered as a new material, but it has attracted widespread attention from scientists all over the world. Research results have been published continuously, and the application prospects are bright. All this is because graphene has incomparable characteristics of other materials. and advantages. As the first discovered two-dimensional material, the singular properties of graphene include: Young's modulus (about 1100GPa), fracture strength (125GPa), thermal conductivity (about 5000Wm-1K-1), specific surface area (calculated value 2630m2g -1) and exotic transport phenomena such as the quantum Hall effect. However, due to the lack of effective bandgap of graphene material itself, its application in electronic devices (such as field effect transistors, etc.)...

Claims

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Application Information

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IPC IPC(8): C01B31/04
Inventor 王连军范宇驰江莞
Owner DONGHUA UNIV
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