Method for plating nickel layer on surface of multiwall carbon nanotube

A technology of multi-walled carbon nanotubes and nickel layer, which is applied in the direction of liquid chemical plating, coating, metal material coating technology, etc., can solve the problems of structural damage, easy agglomeration of multi-walled carbon nanotubes, etc., and achieve improved mutual entanglement The tendency of junction, the effect of improving the interface bonding strength and improving the chemical catalytic activity

Inactive Publication Date: 2010-05-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to solve the problem that multi-walled carbon nanotubes are easy to agglomerate and rea

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  • Method for plating nickel layer on surface of multiwall carbon nanotube
  • Method for plating nickel layer on surface of multiwall carbon nanotube
  • Method for plating nickel layer on surface of multiwall carbon nanotube

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specific Embodiment approach 1

[0008] Specific embodiment one: the method for coating the nickel layer on the surface of multi-walled carbon nanotubes in this embodiment is as follows: 1. Acidification treatment: add multi-walled carbon nanotubes in the mixed acid solution for ultrasonic treatment for 1h, stir for 24h, and then use an aperture of The porous membrane suction filtration of 450nm promptly completes the acidification treatment, the quality of the multi-walled carbon nanotubes and the volume ratio of the mixed acid solution are 1g: 200ml, and the mixed acid solution is composed of the concentrated sulfuric acid of 98% and the nitric acid of 67.7% by the mass concentration. Composition according to the volume ratio of 3:1; 2. Preparation of sensitizing solution: adding hydrochloric acid to distilled water to form a 4% hydrochloric acid solution with a volume concentration, and then adding SnCl to the hydrochloric acid solution 2 2H 2 O, then filled with argon for 1 to 2 minutes, and aged for 48 h...

specific Embodiment approach 2

[0016] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the nickel plating solution described in the step five is made of NiSO 4 ·6H 2 O, NaH 2 PO 2 ·H 2 O, Na 3 C 6 h 5 o 7 2H 2 O and NH 4 Cl compound; NiSO in nickel plating solution 4 ·6H 2 The concentration of O is 0.1mol / l, NaH 2 PO 2 ·H 2 The concentration of O is 0.2mol / l, Na 3 C 6 h 5 o 7 2H 2 The concentration of O is 0.08mol / l, NH 4 The concentration of Cl is 1mol / l, and the pH value of the nickel plating solution is 9.5. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Embodiment 3: The difference between this embodiment and Embodiment 2 is that the pH value of the nickel plating solution described in step 5 is adjusted with 1:1 ammonia water. Others are the same as in the second embodiment.

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Abstract

The invention discloses a method for plating a nickel layer on the surface of a multiwall carbon nanotube, and relates to a method for plating a metal layer on the surface of the multiwall carbon nanotube. The invention solves the problems that the multiwall carbon nanotube is subject to aggregation and reacts with oxide easily to cause structural damage. The method comprises the following steps: firstly, acidizing treatment; secondly, preparation of sensitizing solution; thirdly, sensitization treatment; fourthly, activation treatment; and fifthly, plating treatment. After the nickel layer is plated on the surface of the multiwall carbon nanotube by the method, the Van der Waals force of the surface of the multiwall carbon nanotube is weaken and the problems that the multiwall carbon nanotube has the trend of mutual intrication and is subject to aggregation easily can be improved; and the nickel layer on the surface of the multiwall carbon nanotube can protect the carbon nanotube and can prevent the surface of the multiwall carbon nanotube from being damaged by other media (oxidizing medium and corrosion medium). In addition, due to the fine size of carbon nanotube, nickel with the crystal grain on the nano-scale can be better dispersed and the chemical catalytic activity of the nickel can be improved.

Description

technical field [0001] The invention relates to a method for plating a metal layer on the surface of a multi-walled carbon nanotube. Background technique [0002] Carbon nanotubes are formed by curling graphite sheets. The sheets are composed of carbon-carbon bonds with the highest strength in nature, and the sheets are composed of van der Waals forces. Due to the van der Waals force, multi-walled carbon nanotubes are easy to agglomerate and difficult to disperse. Because there are no redundant dangling bonds on the surface of carbon nanotubes, they are in an inert state, making it difficult to interact with other chemical substances in many cases; and carbon nanotubes are easy to react with oxidizing substances and some metals, causing structural damage. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for coating the surface of multi-walled carbon nanotubes with a nickel layer in order to solve the pro...

Claims

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Application Information

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IPC IPC(8): C23C18/18C23C18/36C01B31/02
Inventor 张学习于天明钱明芳耿林
Owner HARBIN INST OF TECH
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