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Composite nanotube composed of molybdenum disulfide-carbon-carbon nanotube and preparation method thereof

A carbon nanotube, molybdenum disulfide technology, applied in the direction of molybdenum sulfide, chemical instruments and methods, carbon compounds, etc., can solve the problems of poor electrical conductivity, low catalysis, uneven load, etc., to improve electrical conductivity, The effect of improving dispersibility and reducing impedance

Active Publication Date: 2014-02-05
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Molybdenum disulfide on I - / I 3 - The catalytic activity of the transformation reaction is high, but the conductivity is not good. Carbon nanotubes have good conductivity, but the catalytic performance is not high, so MoS 2 / CNTs composites not only have high catalytic properties but also good electrical conductivity
However, there are currently two problems that need to be solved for this material. One is that molybdenum disulfide is not uniformly loaded on the surface of carbon nanotubes, and the other is that after it coats carbon nanotubes, it seriously reduces the conductivity of carbon nanotubes.

Method used

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  • Composite nanotube composed of molybdenum disulfide-carbon-carbon nanotube and preparation method thereof
  • Composite nanotube composed of molybdenum disulfide-carbon-carbon nanotube and preparation method thereof
  • Composite nanotube composed of molybdenum disulfide-carbon-carbon nanotube and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037]Dissolve 5g of ammonium molybdate in distilled water, add 40ml of ammonium sulfide solution and 20ml of ammonia water with a mass concentration of 28-29%, and react at 60-70°C for 2 hours. After the reaction, stand and crystallize at 2-10°C for 48 hours. Filter and dry at room temperature to obtain ammonium tetrathiomolybdate crystals; dissolve 2g of ammonium tetrathiomolybdate crystals and 0.4g of polyvinyl alcohol (number average molecular weight 1000) in 50ml of water to obtain a mixed solution, and then add 0.5g of multi-wall Carbon nanotubes were ultrasonically dispersed for 4 hours and then centrifuged, washed with distilled water and absolute ethanol in turn, dried at 60°C, then calcined at 850°C for 2 hours under the protection of hydrogen, and cooled to room temperature to obtain MoS 2 -C / CNTs composite nanotubes. MoS on carbon nanotubes 2 and the loading of amorphous carbon accounted for the mass percentage of composite nanotubes were: 18% and 1.5%.

Embodiment 2

[0039] Dissolve 5g of ammonium molybdate in distilled water, add 40ml of ammonium sulfide solution and 20ml of ammonia water with a mass concentration of 28-29%, and react at 60-70°C for 2 hours. After the reaction, stand and crystallize at 2-10°C for 48 hours. Filter and dry at room temperature to obtain ammonium tetrathiomolybdate crystals; dissolve the 1.5g ammonium tetrathiomolybdate crystals and 0.8g polyvinyl alcohol (number average molecular weight 1200) in 50ml of water in sequence to obtain a mixed solution, and then add 0.5 g multi-walled carbon nanotubes, ultrasonically dispersed for 4 hours and then centrifuged, washed with distilled water and absolute ethanol in turn and dried at 60°C, then calcined at 800°C for 2 hours under the protection of hydrogen, and cooled to room temperature to obtain MoS 2 -C / CNTs composite nanotubes. MoS on carbon nanotubes 2 and the loading amount of amorphous carbon accounted for the mass percentage of the composite system were: 15% ...

Embodiment 3

[0041] Dissolve 5g of ammonium molybdate in distilled water, add 40ml of ammonium sulfide solution and 20ml of ammonia water with a mass concentration of 28-29%, and react at 60-70°C for 2 hours. After the reaction, stand and crystallize at 2-10°C for 48 hours. Filter and dry at room temperature to obtain ammonium tetrathiomolybdate crystals; the following: 2.5g ammonium tetrathiomolybdate crystals and 0.6g polyvinyl alcohol (number average molecular weight 800) were dissolved in 50ml water successively to obtain a mixed solution, and then added 0.5g of multi-walled carbon nanotubes, ultrasonically dispersed for 4 hours and then centrifuged, washed with distilled water and absolute ethanol in turn and dried at 60°C, then calcined at 800°C for 2 hours under the protection of hydrogen, cooled to room temperature to obtain MoS 2 -C / CNTs composite nanotubes. MoS on carbon nanotubes 2 and the loading amount of amorphous carbon accounted for 20% and 2.1% of the mass percentage of t...

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Abstract

The invention discloses a composite nanotube composed of a molybdenum disulfide-carbon-carbon nanotube and a preparation method thereof. The method comprises the following steps: firstly, orderly dissolving ammonium tetrathiomolybdate and a carbon high-molecular polymer with surface activity into water; then adding a multiwalled carbon nanotube; centrifuging, drying and burning after carrying out ultrasonic dispersing, so as to prepare MoS2-C / CNTs. By using the surface activity of a carbon high-molecular polymer, the molybdenum disulfide is more evenly dispersed on the surface of the carbon nanotube; on the other hand, the conductivity of a compound is improved through the compound of amorphous carbon and molybdenum disulfide left on the surface of the carbon nanotube when a mixture is burnt at high temperature.

Description

1. Technical field [0001] The invention relates to a preparation method of a composite nanotube, in particular to a composite nanotube composed of molybdenum disulfide-carbon-carbon nanotube and a preparation method thereof. 2. Background technology [0002] In recent years, fossil energy is facing serious problems such as resource scarcity and environmental pollution. It is imminent to develop and utilize clean and renewable energy. Solar energy is a renewable clean energy, which is inexhaustible and inexhaustible. At present, silicon-based solar cells have been widely used in military, aerospace, satellite and other fields. However, its complex preparation process, cumbersome assembly process, shortage of high-purity silicon raw materials, and high production costs have limited its large-scale promotion and application. Due to the simple manufacturing process and relatively low price of dye-sensitized solar cells, it may replace traditional silicon solar cells and becom...

Claims

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Application Information

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IPC IPC(8): C01G39/06C01B31/02B82Y30/00C01B32/168
Inventor 凤仪刘文宏袁怀波钱刚苗世顶陈阳明莫飞王雨晴
Owner HEFEI UNIV OF TECH
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