Coating method of high-density Ni layer of carbon nano tube

A carbon nanotube, high-density technology, applied in the nano field, can solve the problems of difficult control of process parameters, high energy consumption, complex equipment, etc., and achieve the effects of excellent throwing and deep plating ability, uniform coating and simple process.

Inactive Publication Date: 2010-09-01
LANZHOU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0003] However, the above carbon nanotube coating methods have common disadvantages, namely high energy consumpt

Method used

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  • Coating method of high-density Ni layer of carbon nano tube
  • Coating method of high-density Ni layer of carbon nano tube
  • Coating method of high-density Ni layer of carbon nano tube

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Embodiment Construction

[0014] The present invention is a kind of coating method of carbon nanotube high-density Ni layer, and its steps are:

[0015] (1) Purify the carbon nanotubes first: put the carbon nanotubes into the 3 and concentrated H 2 SO 4 Soak in the mixed acid prepared at a volume ratio of 1:3 for 24 hours, then rinse repeatedly with deionized water, let it stand for 4 hours, collect the supernatant, and rinse several times until PH=7; all the collected supernatant The liquid was allowed to stand for 24 hours to make it precipitate, and then the precipitate was filtered and dried;

[0016] (2) Sensitize the carbon nanotubes of the purified supernatant: put the purified carbon nanotubes into the sensitization solution for 30 minutes, so that the SnCl 2 Deposit on the surface of carbon nanotubes, then wash the solution repeatedly until pH = 7, then dry it; the composition of the sensitization solution is SnCl 2 2H 2 O: 20g / L, HCl: 40g / L;

[0017] (3) Activating the sensitized carbon...

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Abstract

The invention provides a coating method of a high-density Ni layer of a carbon nano tube, which aims to improve the compactness and the uniformity of the nickel-coating layer of the carbon nano tube. The method comprises the following steps: manufacturing the carbon nano tube by an anode arc plasma method; acidulating and then washing the carbon nano tube with deionized water; standing for 4 hours, collecting supernate, and then repeatedly washing for many times until pH is 7; standing all the collected supernate for 24 hours for precipitation; filtering and drying precipitates; and finally sensitizing, activating, plating and performing heat treatment on the dried precipitates.

Description

technical field [0001] The present invention relates to the field of nanotechnology. Background technique [0002] Since the discovery of carbon nanotubes in 1991, people have widely paid attention to their excellent mechanical properties and unique electromagnetic properties. However, the surface activation energy of carbon nanotubes is greatly reduced after being coated with nickel, and the dispersion and compatibility with other metals or compounds are improved. Carbon nanotube coating technology has great application potential in ferrofluids, catalysts, nuclear waste treatment, biomedicine, microelectronic materials, photoelectric radiation, redox catalysts, and radio wave shielding materials. Therefore, different coating technologies have emerged one after another. The main coating technologies include wet chemical method, microwave plasma chemical vapor deposition method, catalytic gas phase cracking method and so on. [0003] However, the above carbon nanotube coati...

Claims

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Application Information

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IPC IPC(8): C23C18/36C23C18/18
Inventor 李维学郝远陈体军金辉戴剑锋王青石刚徐莺歌王敦栋
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
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