Method for dispersing carbon nano-tube

A carbon nanotube, dispersing technology, applied in chemical instruments and methods, carbon compounds, inorganic chemistry, etc., can solve the problems of reduced inherent properties, unfavorable application, damage to the electronic structure of carbon nanotubes, etc., and achieves low usage and stability. Good, high yield effect

Inactive Publication Date: 2017-12-01
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Because the covalent modification method destroys the electronic structure of carbon nanotubes, it may le

Method used

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  • Method for dispersing carbon nano-tube
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  • Method for dispersing carbon nano-tube

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0035] Example 1

[0036] 3 mg of 2,3,6,7,10,11-hexahydroxytriphenylene and 1.5 mg of single-walled carbon nanotubes (HiPco) were placed in a 60 ml ultrasonic vessel, followed by 30 mL of water, and the bottle was sealed with plastic wrap After mouthing, it was fixed in the ultrasonic water tank of the ultrasonic cleaner and sonicated for 2 days. During ultrasonication, the temperature of the water tank was controlled at 20°C using a circulating water device. After the end of sonication, the solution turned black, which proved that a considerable number of carbon nanotubes were uniformly dispersed in the water. The dispersion was carefully transferred to a centrifuge tube and centrifuged at 25,700 g for 1 hour to remove undispersed carbon nanotube clusters. Taking out the upper layer liquid, a uniformly dispersed carbon nanotube dispersion liquid can be obtained.

[0037] figure 1 It is a picture of the single-wall carbon nanotube dispersion prepared in Example 1 of the ...

Example Embodiment

[0039] Example 2

[0040] Place 3.0 mg of 2,3,6,7,10,11-hexahydroxytriphenylene and 1.5 mg of single-walled carbon nanotubes (HiPco) in a 60 ml ultrasonic vessel, then add 30 mL of methanol, and seal with plastic wrap After the bottle was finished, it was fixed in the ultrasonic water tank of the ultrasonic cleaner and sonicated for 3 days. During ultrasonication, the temperature of the water tank was controlled at 15°C using a circulating water device. After the end of sonication, the solution turned black, which proved that a considerable number of carbon nanotubes were uniformly dispersed in the water. The dispersion was carefully transferred to a centrifuge tube and centrifuged at 1029 g for 1 hour to remove undispersed carbon nanotube clusters. Taking out the upper layer liquid, a uniformly dispersed black carbon nanotube dispersion liquid can be obtained. The concentration of carbon nanotubes in the dispersion liquid can be calculated from the absorption spectrum, a...

Example Embodiment

[0041] Example 3

[0042] Place 3 mg of 2,3,6,7,10,11-hexahydroxytriphenylene and 0.75 mg of single-walled carbon nanotubes (HiPco) in a 60 ml ultrasonic vessel, then add 30 mL of water, and seal the bottle with plastic wrap After mouthing, it was fixed in the ultrasonic water tank of the ultrasonic cleaner and sonicated for 2 days. During ultrasonication, the temperature of the water tank was controlled at 15°C using a circulating water device. After the end of sonication, the solution turned black, which proved that a considerable number of carbon nanotubes were uniformly dispersed in the water. The dispersion was carefully transferred to a centrifuge tube and centrifuged at 25700 g for 1.5 hours to remove undispersed carbon nanotube clusters. Taking out the upper layer liquid, a uniformly dispersed black carbon nanotube dispersion liquid can be obtained.

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Abstract

The invention discloses a method for dispersing a carbon nano-tube, which can be used for effectively peeling and dispersing a carbon nano-tube bundle by utilizing the noncovalent interaction between a conjugate macrocycle molecule (dispersing agent) and the carbon nano-tube and the hydrogen bond network structure formed among molecules of the dispersing agent. The method comprises the following steps: adding the dispersing agent and the carbon nano-tube into an ultrasonic container filled with a dispersing solvent, and performing ultrasonic treatment at room temperature to obtain a coarse sample of the carbon nano-tube dispersing solution; and centrifugally removing the carbon nano-tube bundle which is uniformly dispersed to obtain a dispersing solution which is uniformly dispersed. According to the method, the aim of efficiently dispersing the carbon nano-tube (yield is 75 percent) can be achieved under a low dispersing agent dosage (the concentration is reduced to 0.005mg/mL) by selecting an efficient dispersing agent.

Description

technical field [0001] The invention relates to the field of carbon nanotube dispersion, in particular to a method for efficiently preparing a carbon nanotube dispersion liquid. Background technique [0002] Carbon nanotubes are coaxial round tubes with nanoscale diameters composed of carbon atoms arranged in a hexagonal shape. According to the different tube walls, carbon nanotubes can be divided into single-walled carbon nanotubes and multi-walled carbon nanotubes. Due to the structural characteristics of large aspect ratio, specific surface area, and highly delocalized large π structure, carbon nanotubes show excellent performance in mechanics, electricity, optics, magnetism, etc. Devices, field emission devices, absorbing materials and other fields have broad application prospects. However, there is a strong van der Waals force between carbon nanotubes, which makes them easy to agglomerate into bundles or entangled into clusters, which seriously restricts their excelle...

Claims

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Application Information

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IPC IPC(8): C01B32/174
Inventor 刘刚刘能赵平刘治田戴武斌
Owner WUHAN INSTITUTE OF TECHNOLOGY
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