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Preparation method of carbon nanotube-cuprous oxide composite powder

A technology of carbon nanotubes and composite powders, applied in chemical instruments and methods, catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, etc., can solve carbon nanotube segregation and difficult effective coating , low density and other issues, to achieve the effect of uniform particle size distribution, tight combination and simple process

Inactive Publication Date: 2017-06-09
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, in the preparation process of nano-cuprous oxide and carbon nanotube composite powder, the characteristics of high aspect ratio and low density of carbon nanotubes will be encountered, resulting in the agglomeration of carbon nanotubes in the composite powder and the formation of cuprous oxide. Segregation, and the wettability of the surface of carbon nanotubes with cuprous oxide is not good, it is difficult to form an effective coating of cuprous oxide on carbon nanotubes

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  • Preparation method of carbon nanotube-cuprous oxide composite powder
  • Preparation method of carbon nanotube-cuprous oxide composite powder

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Embodiment 1

[0024] This embodiment provides a method for preparing carbon nanotube cuprous oxide nanocomposite powder, which specifically includes the following steps:

[0025] (1) Put 10 g of carbon nanotubes with an industrial purity of 90% into a vacuum high-temperature sintering furnace and heat them to 2200 degrees Celsius, keep them warm for 2 hours, and then cool to obtain high-temperature purified carbon nanotubes.

[0026] (2) Put the carbon nanotubes obtained in step (1) into an acid solution with a volume ratio of sulfuric acid and nitric acid of 1:3 and stir for 4 hours, then rinse with deionized water until neutral, and dry in vacuum The surface-treated carbon nanotubes are obtained.

[0027] (3) Disperse 1 g of carbon nanotubes obtained in step (2) into 1000 ml of deionized aqueous solution to obtain a carbon nanotube precursor dispersion; dissolve 50 g of copper acetate in 500 ml of deionized water to obtain a copper acetate solution; The prepared solutions were respective...

Embodiment 2

[0030] This embodiment provides a method for preparing carbon nanotube cuprous oxide nanocomposite powder, which specifically includes the following steps:

[0031] (1) Put 20g of carbon nanotubes with an industrial purity of 90% into a vacuum heat treatment, heat them to 2800 degrees Celsius, keep them warm for 1.5 hours, and then cool them down to obtain high-temperature purified carbon nanotubes.

[0032] (2) Put the carbon nanotubes obtained in step (1) into a concentrated sulfuric acid solution and stir for 12 hours, then wash them with deionized water until neutral, and dry them in vacuum to obtain surface-treated carbon nanotubes.

[0033] (3) Disperse 10 g of carbon nanotubes obtained in step (2) into 1000 ml of deionized aqueous solution to obtain a carbon nanotube precursor dispersion; dissolve 100 g of copper sulfate in 500 ml of deionized water to obtain a copper sulfate solution; The prepared solutions are respectively placed in the ultrasonic atomization device. ...

Embodiment 3

[0036] This embodiment provides a method for preparing carbon nanotube cuprous oxide nanocomposite powder, which specifically includes the following steps:

[0037] (1) Put 50 g of carbon nanotubes with an industrial purity of 90% into a tube furnace protected by an inert atmosphere and heat to 3000 degrees Celsius, keep the temperature for 1 hour, and then cool to obtain high-temperature purified carbon nanotubes.

[0038] (2) Put the carbon nanotubes obtained in step (1) into a concentrated nitric acid solution and stir for 24 hours, then wash them with deionized water until neutral, and dry them in vacuum to obtain surface-treated carbon nanotubes.

[0039] (3) Disperse 20 g of carbon nanotubes obtained in step (2) into 1000 ml of deionized aqueous solution to obtain a carbon nanotube precursor dispersion; dissolve 100 g of cuprous alkoxide in 1000 ml of deionized water to obtain a cuprous alkoxide solution; Place the two prepared solutions in the ultrasonic atomization dev...

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Abstract

The invention discloses a preparation method of carbon nanotube-cuprous oxide composite powder and belongs to the field of preparation of composite materials. The preparation method includes atomizing treated nanotubes and a soluble copper salt solution into small droplets through a spraying device, feeding the small droplets into a heating cavity, enabling the soluble copper salt solution to adsorb on the surfaces of the treated nanotubes prior to drying, decomposition, nucleation, growing and sintering so as to generate the carbon nanotube-cuprous oxide composite powder, and a collection device is used for storing the carbon nanotube-cuprous oxide composite powder. The preparation method is capable of purifying the carbon nanotubes to a certain degree without destroying a primary morphology, and the carbon nanotube-cuprous oxide composite powder prepared by the preparation method is smaller in particle size (can reach a nanoscale), uniformly coats the surfaces of the carbon nanotubes in a series connection manner and can be used for the fields of photocatalysts, conductive paste and powder metallurgical materials. The preparation method is simple and convenient to implement and easy for large-scale batch production.

Description

technical field [0001] The invention discloses a preparation method of carbon nanotube and cuprous oxide composite powder, which belongs to the field of composite material preparation. Background technique [0002] Cuprous oxide is a p-type semiconductor with a bandgap of 2.0-2.2 electron volts. It has good light absorption characteristics and photoelectric properties. It is a photocatalyst with great potential. In addition, nano-cuprous oxide is used in solar cells, Seawater anti-corrosion coatings, magnetic materials, gas-sensitive materials, optical instruments, lithium-ion batteries, biological antibacterial agents and other fields have very broad application prospects. However, it is well known that cuprous oxide has unstable chemical properties and is easily oxidized. In addition, the photogenerated electron holes generated inside cuprous oxide are easily recombined during the transport process, which seriously affects its photocatalytic effect. Carbon nanotubes (CNTs...

Claims

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Application Information

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IPC IPC(8): B01J23/72B01J37/34
CPCB01J23/72B01J37/343B01J35/50B01J35/40
Inventor 鲍瑞毛帅易健宏李才巨刘意春陶静梅李凤仙游昕谈松林
Owner KUNMING UNIV OF SCI & TECH