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Carbon nanotube/copper-zinc alloy composite material as well as preparation method and application thereof

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 reunion, reducing the loss, and inhibiting the growth of bacteria

Active Publication Date: 2019-01-25
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Carbon nanotube/copper-zinc alloy composite material as well as preparation method and application thereof
  • Carbon nanotube/copper-zinc alloy composite material as well as preparation method and application thereof
  • Carbon nanotube/copper-zinc alloy composite material as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation method of carbon nanotube / copper-zinc alloy composite material of the present invention comprises the following steps:

[0038](1) Acid treatment: using multi-walled carbon nanotubes as the matrix, the CNTs are about 500nm long and 20-25nm wide, put the CNTs into a mixture of concentrated sulfuric acid and concentrated nitric acid (volume ratio 3:1) and heat at 110°C for 2h , washed with a large amount of deionized water to obtain acid-treated CNTs, the concentration of CNTs is 5g / l, and the transmission electron microscope picture is as follows figure 1 shown;

[0039] (2) Sensitization treatment: take by weighing 2.5g tin protochloride and dissolve in 2.5ml concentrated hydrochloric acid (mass concentration is 36%), add water and dilute to 100ml, obtain sensitization liquid, get 8ml step (1) after the acid treatment of gained CNTs were added to the sensitization solution for ultrasonic treatment for 10 minutes, and cleaned with a large amount of...

Embodiment 2

[0052] A kind of preparation method of carbon nanotube / copper-zinc alloy composite material of the present invention comprises the following steps:

[0053] (1) Acid treatment: using multi-walled carbon nanotubes as the matrix, the CNTs are about 500nm long and 20-25nm wide, put the CNTs into a mixture of concentrated sulfuric acid and concentrated nitric acid (volume ratio 2:1) and heat at 110°C for 2h , washed with a large amount of deionized water to obtain acid-treated CNTs, the concentration of CNTs is 5g / l;

[0054] (2) Sensitization treatment: take by weighing 2.5g tin protochloride and dissolve in 2.5ml concentrated hydrochloric acid (mass concentration is 36%), add water and dilute to 100ml, obtain sensitization liquid, get 8ml step (1) after the acid treatment of gained CNTs were added to the sensitization solution for ultrasonic treatment for 10 minutes, and cleaned with a large amount of deionized water to obtain sensitized CNTs;

[0055] (3) Activation treatment:...

Embodiment 3

[0067] A kind of preparation method of carbon nanotube / copper-zinc alloy composite material of the present invention comprises the following steps:

[0068] (1) Acid treatment: using multi-walled carbon nanotubes as the matrix, the CNTs are about 500nm long and 20-25nm wide, put the CNTs into a mixture of concentrated sulfuric acid and concentrated nitric acid (volume ratio 2:1) and heat at 110°C for 2h , washed with a large amount of deionized water to obtain acid-treated CNTs, the concentration of CNTs is 5g / l;

[0069] (2) Sensitization treatment: take by weighing 2.5g tin protochloride and dissolve in 2.5ml concentrated hydrochloric acid (mass concentration is 36%), add water and dilute to 100ml, obtain sensitization liquid, get 8ml step (1) after the acid treatment of gained CNTs were added to the sensitization solution for ultrasonic treatment for 10 minutes, and cleaned with a large amount of deionized water to obtain sensitized CNTs;

[0070] (3) Activation treatment:...

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Abstract

The invention discloses a carbon nanotube / copper-zinc alloy composite material as well as a preparation method and application thereof and belongs to the technical field of preparation of materials. The carbon nanotube / copper-zinc alloy composite material is prepared from a matrix carbon nanotube (CNT) and copper-zinc alloy nanoparticles loaded on the surface of the matrix carbon nanotube; a preparation process comprises the following steps: firstly, carrying out purification, sensitization and activation treatment on the CNT; then loading Cu nanoparticles on the CNT; plating Zn by utilizing zinc chloride; finally, carrying out alloying to obtain the carbon nanotube / copper-zinc alloy composite material. According to the carbon nanotube / copper-zinc alloy composite material, the CNTs are used for loading a nano copper-zinc alloy; on one hand, the advantages that the CNTs subjected to strong acid treatment have a relatively large specific surface area, relatively strong chemical adsorption, uniform distribution of metal elements on pipes and high thermal stability can be expressed; on the other hand, the CNTs are used as carriers of the copper-zinc nanoparticles and the property of isolating and dispersing the copper-zinc nanoparticles is realized; the distance between the copper-zinc nanoparticles is increased, the anti-sintering performance of the copper-zinc nanoparticles is improved and the agglomeration problem of nano copper-zinc alloys is solved.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a carbon nanotube / copper-zinc alloy composite material and a preparation method and application thereof. Background technique [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. The traditional KDF material has weak adsorption capacity, and the effect of using it alone is not good. It has a small specific surface area, is easy to agglomerate and has poor anti-sintering performance. [0003] At present, the preparation methods of copper-zinc alloy nanoparticles ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/80B01J37/34
CPCB01J23/80B01J37/348B01J35/399B01J35/393B01J35/23
Inventor 龚深李周肖柱王洋吴迪
Owner CENT SOUTH UNIV
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