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Chemical method for coating nickel and zinc on multi-wall nano carbon tube surface

A multi-wall carbon nanotube and carbon nanotube technology, applied in liquid chemical plating, metal material coating process, coating and other directions, can solve the problems of high chemical potential of zinc and no discovery.

Inactive Publication Date: 2009-12-02
HUBEI UNIV OF TECH
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Problems solved by technology

However, the chemical potential of zinc is high, and it is difficult for redox reactions to occur. It is difficult to coat zinc on the surface of carbon nanotubes. At present, there is no research report on nickel-zinc plating on the surface of carbon nanotubes.

Method used

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  • Chemical method for coating nickel and zinc on multi-wall nano carbon tube surface
  • Chemical method for coating nickel and zinc on multi-wall nano carbon tube surface

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Embodiment Construction

[0017] The process steps of electroless nickel-zinc plating on the surface of multi-walled carbon nanotubes are as follows:

[0018] 1. Purification treatment: use lye to remove fatty substances on the surface of carbon nanotubes. Put the carbon nanotubes into NaOH aqueous solution with a concentration of 1-3mol / L, oscillate in an ultrasonic oscillator to fully disperse, the ultrasonic mode is 30 seconds per ultrasonic, stop for 30 seconds; heat for 0.2-2 hours, cool to room temperature; use deionization Wash with water until neutral; dry the washed powder in a vacuum oven;

[0019] A better value is: put carbon nanotubes into NaOH aqueous solution with a concentration of 2mol / L, oscillate in an ultrasonic oscillator to fully disperse, the ultrasonic mode is 30 seconds of ultrasonication, stop for 30 seconds; heat for 1 hour, and cool to room temperature.

[0020] 2. Add 5-15 grams of purified carbon nanotubes to 250mL concentrated nitric acid for oxidation treatment, heat to...

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Abstract

A method for chemically plating nickel and zinc on the surface of multi-walled carbon nanotubes, which is characterized by: a. First, pretreat the carbon nanotubes before plating nickel and zinc, obtain purer carbon nanotubes through purification and oxidation treatment, and then activate them , Sensitization treatment forms a catalytic metal core on the surface of carbon nanotubes; b. Add the pretreated carbon nanotubes into the nickel-zinc plating solution, use an ultrasonic oscillator to fully disperse the reaction process, and Ni-Zn-P is on the surface of the carbon nanotubes. The catalytic metal core is deposited and grows up, and then a continuous bonded coating is formed. The autocatalytic activity of nickel causes the deposition to continue, thereby obtaining a thicker coating. When the carbon nanotubes treated above are used as metal matrix composite reinforcements, they can be closely combined with the metal matrix and give full play to their excellent properties.

Description

Technical field [0001] The invention relates to a method for electroless nickel-zinc plating on the surface of multi-walled carbon nanotubes. Chemically nickel-zinc plated carbon nanotubes can be combined with magnesium, aluminum and other non-ferrous metal matrices with high strength, becoming an ideal reinforcement for preparing high mechanical properties, lightweight composite materials, and are widely used in chemical, machinery, automobile and other industries and aerospace technology. It has broad application prospects. Background technique [0002] The interface formed by the direct composite of carbon nanotubes and metal is fragile and cannot achieve ideal mechanical properties. If metal is plated on the surface of carbon nanotubes to make it a medium for combining carbon nanotubes with the matrix, the problem of high-strength bonding between carbon nanotubes and the metal matrix can be solved. [0003] At present, there are many research reports on nickel plating ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C18/48C23C18/18
Inventor 李四年郑重陈慧敏
Owner HUBEI UNIV OF TECH
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