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Preparation method of graphene-carbon nanotube compound film based on three-dimensional network appearance

A technology of carbon nanotube composite and three-dimensional network, which is applied in the field of preparation of graphene-carbon nanotube composite film, to achieve the effect of good uniformity, simple process and large specific surface area

Inactive Publication Date: 2012-04-18
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And so far, there is no report on the detailed study of the influence of different mass ratios of graphene and carbon nanotubes on the transmittance and surface resistance of the final graphene-carbon nanotube composite film.

Method used

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  • Preparation method of graphene-carbon nanotube compound film based on three-dimensional network appearance
  • Preparation method of graphene-carbon nanotube compound film based on three-dimensional network appearance
  • Preparation method of graphene-carbon nanotube compound film based on three-dimensional network appearance

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] (1) Using glass as the substrate, the substrate was ultrasonically washed with deionized water and ethanol alternately, and then dried in vacuum for later use.

[0048] (2) Preparation of carbon nanotube solution

[0049] The carbon nanotubes were passed through a vacuum tube furnace at 550 ° C with a volume ratio of air to nitrogen of 1:4 and a total gas flow rate of 300 cm 3 / min mixed gas atmosphere for 1 hour, then condensed and refluxed in a hydrochloric acid solution with a mass concentration of 37% at 100°C for 1 hour, then suction filtered, and repeatedly washed the filter cake with deionized water until the washing liquid was neutral. Vacuum dry at 60°C to obtain pure carbon nanotubes, then add pure carbon nanotubes and surfactant SDS to deionized water, ultrasonically disperse, and prepare carbon nanotubes at a concentration of 0.05 mg / mL, the mass of surfactant The solution whose concentration concentration is 0.5% is recorded as A solution.

[0050] (3) Gr...

Embodiment 2

[0055] In this example, the A solution prepared in step (2) in Example 1 and the B solution prepared in step (3) are mixed evenly according to the mass ratio of graphene oxide and carbon nanotubes in the solution to 1:1. 2:1 mixed evenly, other things are the same, the surface resistance of the obtained graphene-carbon nanotube composite film in the range of transmittance 60~90% is 400~2400 Ω / sq.

Embodiment 3

[0057] In this example, the A solution prepared in step (2) in Example 1 and the B solution prepared in step (3) are mixed evenly according to the mass ratio of graphene oxide and carbon nanotubes in the solution to 1:1. 5:1 mixed evenly, other the same, the obtained graphene-carbon nanotube composite film has a surface resistance of 500~3200 Ω / sq in the range of transmittance 52~85%.

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Abstract

The invention discloses a preparation method of a graphene-carbon nanotube compound film based on a three-dimensional network appearance. The method comprises the step of: transferring and stamping graphene and a carbon nanotube onto glass, a tantalum sheet, a silicon chip, a stainless steel plate or a polyethylene glycol terephthalate substrate in the mass ratio (1-10):1 through spraying deposition or vacuum suction filtration, wherein the grapheme is graphene oxide prepared by using an improved Hummers method; and a preparation method of a carbon nanotube solution comprises the following steps of: mixing acids; dispersing surfactants such as sodium lauryl sulfate, sodium dodecyl benzene sulfonate and hexadecyl trimethyl ammonium bromide in an auxiliary way, and the like. The graphene-carbon nanotube compound film prepared by adopting the method has the advantages of adjustable transmission and surface resistance, high uniformity, high stability, simple preparation method process and the like, and can be loaded on a rigid substrate as well as a flexible substrate.

Description

technical field [0001] The invention relates to a preparation method of a graphene-carbon nanotube composite film based on a three-dimensional network morphology, and belongs to the field of new nanometer materials. Background technique [0002] Carbon nanotubes are seamless hollow nanoscale tubular structures formed by rolling single-layer or multi-layer graphite planes. According to the number of tube wall layers, carbon nanotubes can be divided into single-wall carbon nanotubes and multi-wall carbon nanotubes. . Carbon nanotubes have very high mechanical strength and elasticity in terms of mechanics, excellent conductor or semiconductor characteristics in electronics, and excellent nonlinear optical properties in optics. However, due to the difficult removal of amorphous carbon and catalyst impurities generated in the preparation process, chiral control problems and uniform dispersion (Vito Sgobba and Dirk M. Guldi, Carbon nanotubes—electronic / electrochemical properties ...

Claims

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Application Information

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IPC IPC(8): C01B31/02C01B31/04B82Y40/00
Inventor 封伟彭罗文冯奕钰
Owner TIANJIN UNIV
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