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A kind of carbon nanotube/copper-zinc alloy composite material and its preparation method and application

A carbon nanotube and composite material technology, which is applied in the field of carbon nanotube/copper-zinc alloy composite material and its preparation, can solve the problem that the level of copper refining cannot meet the process requirements, the purity of the copper-zinc alloy layer is not high, and the stability of the catalyst is affected and other problems, to achieve the effect of reducing the occurrence of agglomeration, small contact angle, and inhibiting the growth of bacteria

Active Publication Date: 2021-05-07
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Copper-zinc alloys are rapidly expanding in applications such as catalysis and water purification. The application of nano-copper-zinc particles in the fields of methanol catalysis, cyclohexane catalysis, energy storage conversion, and nanoelectronics has become a research hotspot. At the same time, it is a water purification material with excellent performance. KDF (Kinetic Degradation Flux) is an alloy made of high-purity copper and zinc. Traditional KDF materials have weak adsorption capacity, and the effect of using them alone is not good. The specific surface area is small, easy to agglomerate and poor sintering resistance.
[0003] At present, the preparation methods of copper-zinc alloy nanoparticles mainly include dipping method and explosion method. The cost is high, the purity of the prepared copper-zinc alloy layer is not high, and the coating is uneven, especially the refining level of copper does not meet the process requirements. In actual use, copper will react with oxidizing substances in water, affecting the stability of the catalyst

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  • A kind of carbon nanotube/copper-zinc alloy composite material and its preparation method and application
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  • A kind of carbon nanotube/copper-zinc alloy composite material and its preparation method and application

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Effect test

Embodiment 1

[0037]A method of preparing a carbon nanotube / copper-zinc alloy composite material comprising the steps of:

[0038](1) Acid treatment: The multi-walled carbon nanotubes are substrates, CNTs is about 500 nm, width of 20 to 25 nm, and CNTs are placed in concentrated sulfuric acid and concentrated nitric acid (volume ratio of 3: 1) at 110 ° C heating for 2h It is cleaned with a large amount of deionized water to obtain CNTs after acid treatment, and the CNTS concentration is 5g / L, and its transmission electron microscopefigure 1 Indicated;

[0039](2) Sensitization treatment: 2.5 g of tin chloride dissolution in 2.5 ml of concentrated hydrochloric acid (36% mass concentration), diluted with water to 100 mL to give the sensitizer, and take 8 ml step (1) obtained after treatment CNTS is added to the sensitization liquid for 10 min, cleaned with a large amount of deionized water, and is obtained by sensitization.

[0040](3) Activation: It is called 0.25 g of palladium chloride dissolved in 5...

Embodiment 2

[0052]A method of preparing a carbon nanotube / copper-zinc alloy composite material comprising the steps of:

[0053](1) Acid Treatment: The multi-walled carbon nanotub is used as a matrix, and the CNTs is about 500 nm, and the CNTs are added to the mixed liquid of concentrated sulfuric acid and concentrated nitric acid (volume ratio of 2: 1) at 110 ° C for 2 h. It is cleaned with a large amount of deionized water to obtain CNTs after acid treatment, and the concentration of CNTs is 5 g / L;

[0054](2) Sensitization treatment: 2.5 g of tin chloride dissolution in 2.5 ml of concentrated hydrochloric acid (36% mass concentration), diluted with water to 100 mL to give the sensitizer, and take 8 ml step (1) obtained after treatment CNTS is added to the sensitization liquid for 10 min, cleaned with a large amount of deionized water, and is obtained by sensitization.

[0055](3) Activation: It is called 0.25 g of palladium chloride dissolved in 5 ml of concentrated hydrochloric acid (36% mass co...

Embodiment 3

[0067]A method of preparing a carbon nanotube / copper-zinc alloy composite material comprising the steps of:

[0068](1) Acid Treatment: The multi-walled carbon nanotub is used as a matrix, and the CNTs is about 500 nm, and the CNTs are added to the mixed liquid of concentrated sulfuric acid and concentrated nitric acid (volume ratio of 2: 1) at 110 ° C for 2 h. It is cleaned with a large amount of deionized water to obtain CNTs after acid treatment, and the concentration of CNTs is 5 g / L;

[0069](2) Sensitization treatment: 2.5 g of tin chloride dissolution in 2.5 ml of concentrated hydrochloric acid (36% mass concentration), diluted with water to 100 mL to give the sensitizer, and take 8 ml step (1) obtained after treatment CNTS is added to the sensitization liquid for 10 min, cleaned with a large amount of deionized water, and is obtained by sensitization.

[0070](3) Activation: It is called 0.25 g of palladium chloride dissolved in 5 ml of concentrated hydrochloric acid (36% mass co...

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Abstract

The invention discloses a carbon nanotube / copper-zinc alloy composite material and its preparation method and application, and belongs to the technical field of material preparation. The carbon nanotube / copper-zinc alloy composite material consists of a matrix carbon nanotube and copper loaded on its surface. Composed of zinc alloy nanoparticles, the preparation process is as follows: first, purify, sensitize, and activate CNTs, then load Cu nanoparticles on CNTs, then use zinc chloride to plate Zn, and finally carry out alloying to obtain carbon nanotubes / copper Zinc alloy composite. The present invention uses CNTs to load the nano-copper-zinc alloy, on the one hand, it can take advantage of the large specific surface area of ​​CNTs after strong acid treatment, strong chemical adsorption, uniform dispersion of metal elements on the tube, and high thermal stability; on the other hand As the carrier of copper-zinc nanoparticles, CNTs can isolate and disperse copper-zinc nanoparticles. The distance between copper-zinc nanoparticles increases, which improves the sintering resistance of copper-zinc nanoparticles and solves the problem of nano-copper-zinc alloy agglomeration.

Description

Technical field[0001]The present invention belongs to the technical field of material preparation, and more particularly to a carbon nanotube / copper-zinc alloy composite material and a preparation method thereof.Background technique[0002]Copper-zinc alloy rapidly expand rapidly in applications such as catalysis and water purification, nano-copper-zinc particles in methanol catalysis, cyclohexane catalysis, energy storage conversion, and nano-electronics have become a water purification material for research hotspots, while performance is more excellent in performance. KINETIC DEGRADATION FLUX is an alloy made from high purity copper and zinc. The traditional KDF material has not strong adsorption. It is not good to use alone, a small specific surface area, and poor agglomeration and anti-sintering performance.[0003]At present, the preparation method of copper-zinc alloy nanoparticles mainly includes impregnation method, explosion, has a high cost, the prepared copper-zinc alloy la...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J37/34
CPCB01J23/80B01J35/0013B01J35/006B01J35/0093B01J37/348
Inventor 龚深李周肖柱王洋吴迪
Owner CENT SOUTH UNIV