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Preparation method of low-cost high-purity carbon nanotube film

A carbon nanotube film, carbon nanotube technology, applied in the direction of carbon nanotubes, single-walled carbon nanotubes, multi-walled carbon nanotubes, etc., can solve the problems of damage to carbon nanotubes, unsafe factors, long time period, etc. Achieve the effect of simple preparation process, innovative technical route and short preparation cycle

Pending Publication Date: 2019-08-27
KUNMING INST OF PHYSICS
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Application No. 200910309105.4 "Preparation method of carbon nanotube film" also adopts the method of vacuum filtration to prepare carbon nanotube film, but the process of removing the dispersion is complicated, the time period is long, and chemical reagents such as strong acid are also used in the process, which is easy Contamination and destruction of carbon nanotubes
In addition, when removing the filter membrane, it should be kept in acetone vapor for more than 1 h. Acetone is a toxic gas, which is likely to cause environmental pollution and unsafe factors, and the removal of the filter membrane takes a long time, which is not conducive to improving the production efficiency.

Method used

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  • Preparation method of low-cost high-purity carbon nanotube film
  • Preparation method of low-cost high-purity carbon nanotube film
  • Preparation method of low-cost high-purity carbon nanotube film

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Example 1, such as Figure 1-4 shown

[0026] Weigh 10 mg of double-walled carbon nanotubes into a beaker, add 100 mL of absolute ethanol, ultrasonicate in a water bath for 36 min, then perform mechanical stirring at a stirring speed of 500 rpm for 2 h, and then ultrasonicate in a water bath after the stirring is completed. After 3 min, a uniform dispersion of carbon nanotubes can be obtained. Vacuum filter the carbon nanotube dispersion immediately to obtain a carbon nanotube film adhered to the filter paper. After drying the nanotube film, make a notch along the edge of the film, put it in absolute ethanol, boil at 75°C for 5-10 minutes, and the carbon nanotube film will be peeled off from the filter paper. The stripped carbon nanotube film is placed in absolute ethanol, and when transferring, the transfer of carbon nanotubes can be realized by picking up the required substrate.

[0027] Such as figure 1 As shown, it is a schematic diagram of the preparation proce...

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Abstract

The invention relates to the field of photoelectrons, and mainly discloses a quick preparation method of a low-cost high-purity carbon nanotube film without any additive. The preparation method is a practicable, simple, convenient and environmentally-friendly operation method, after ultrasonic dispersion and mechanical stirring are carried out on carbon nanotubes in an absolute ethyl alcohol dispersant, the carbon nanotube film capable of large-area stripping is prepared successfully through vacuum filtration. The carbon nanotubes are stripped in large area from filter paper, and the carbon nanotube film is transferred to other required substances. The carbon nanotube film prepared by the method has good compactness and electrical property.

Description

technical field [0001] The invention relates to a method for preparing a high-purity carbon nanotube film, in particular to a low-cost, size-controllable and efficient method for preparing a carbon nanotube film in a liquid phase without using other surfactants. Background technique [0002] Carbon nanotubes are a typical one-dimensional material. Since their discovery in 1991, the application prospects of carbon nanotubes in the fields of optoelectronics and biosensing have attracted widespread attention. Carbon nanotubes can be classified into single-walled carbon nanotubes, double-walled carbon nanotubes and multi-walled carbon nanotubes according to their structure. Carbon nanotubes have a large specific surface area as well as excellent electrical conductivity and thermal stability. Carbon nanotube films, which are arranged by carbon nanotubes, also have unique physical and chemical properties, making them promising for applications in flexible electrodes, wearable dev...

Claims

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Application Information

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IPC IPC(8): C01B32/168C01B32/159
CPCC01B32/168C01B32/159C01B2202/06C01B2202/02C01B2202/04
Inventor 康蓉唐利斌张玉平左文彬李汝劼苏海樱李海滨赵梓妤
Owner KUNMING INST OF PHYSICS
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