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Method for modifying carbon nano-tube by nickel nanometer particles

A technology of nickel nanoparticles and carbon nanotubes, which is applied in the field of nickel nanoparticles modified carbon nanotubes, can solve the problems of cumbersome steps, complicated operations, and restrictions on the further application of nickel nanoparticles modified carbon nanotubes, and achieve good repeatability and process Effects that are simple to implement and controllable in shape and distribution

Inactive Publication Date: 2009-10-07
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The methods for preparing carbon nanotubes decorated with nickel nanoparticles currently reported in the literature mainly use the impregnation method or the electrochemical deposition method. The common problems of these two methods are: complex operation and cumbersome steps.
These problems greatly limit the further application of carbon nanotubes modified with nickel nanoparticles. Therefore, finding a new method to prepare carbon nanotubes decorated with nickel nanoparticles simply and conveniently has become an urgent problem to be solved, and it has also become a research topic of scientists. popular directions

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1: Add 30 mg of multi-walled carbon nanotubes into 50 mL of ethylene glycol, then add 50 mg of nickel chloride, 100 mg of sodium borohydride, and react at 40° C. for 0.5 h with gentle stirring. After the reaction, cool to room temperature, centrifuge to separate the product, and wash with deionized water 3 to 5 times. Finally, put it into a vacuum oven and dry at 30-50° C. for 24 hours to obtain multi-walled carbon nanotubes decorated with nickel nanoparticles.

Embodiment 2

[0015] Example 2: Add 5 mg of single-walled carbon nanotubes into 60 mL of methanol, then add 5 mg of nickel nitrate and 50 mg of hydrazine hydrate, and react at 50° C. for 1.5 h with gentle stirring. After the reaction, cool to room temperature, centrifuge to separate the product, and wash with deionized water 3 to 5 times. Finally, put it into a vacuum oven and dry at 30-50° C. for 24 hours to obtain single-walled carbon nanotubes decorated with nickel nanoparticles.

Embodiment 3

[0016] Example 3: 50 mg of polyacrylic acid-modified multi-walled carbon nanotubes were added to 80 mL of tetrahydrofuran, followed by 90 mg of nickel sulfate and 300 mg of formaldehyde, and reacted at 40° C. for 2 h with gentle stirring. After the reaction, cool to room temperature, centrifuge to separate the product, and wash with deionized water 3 to 5 times. Finally, put it into a vacuum oven and dry at 30-50° C. for 24 hours to obtain multi-walled carbon nanotubes decorated with nickel nanoparticles.

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Abstract

The invention relates to a method for modifying carbon nano-tube by nickel nanometer particles, which comprises the steps of: dispersing carbon 1-40 weight parts of nano-tube into solvent medium, adding 1-100 parts of nickelion salt and 10-800 parts of reducing agent, reacting under the temperature of 40-120 degrees centigrade for 0.5-5 hours; cooling to room temperature after reaction; separating out carbon nano-tube modified by metal nickel nanometer particles, washing 3-5 times by deionized water, putting into a vacuum oven, drying under 30-50 degrees centigrade for 24 hours to obtain the carbon nano-tube modified by metal nickel nanometer particles. The invention loads nickel nanometer particles on the carbon nano-tube surface uniformly by chemical reduction method under mild reaction condition, is method and easy for operation, can obtain the carbon nano-tube modified by metal nickel nanometer particles with stronger magnetic responsiveness, and can control the morphology of the nickel nanometer particles and the distribution on the carbon nano-tube surface by adjusting the reaction temperature and feeding ratio.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite materials, and in particular relates to a method for modifying carbon nanotubes with nickel nanoparticles. Background technique [0002] Carbon nanotubes are seamless hollow nano-scale coaxial cylinders rolled from sheet-structured graphite, and each end of the cylinder has a "cap" formed by half a fullerene sphere molecule, which can generally be divided into There are two types of single-walled carbon nanotubes composed of one layer of graphite and multi-walled carbon nanotubes composed of coaxial layers of graphite. [0003] Due to its low density, high specific surface area, high mechanical strength, excellent electrical properties and good physical and chemical stability, carbon nanotubes are generally considered to be an excellent carrier, which can be used to load drugs, quantum dots, magnetic particles and Catalyst etc. At the same time, carbon nanotubes are a very potential hydrog...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B01J23/755B01J21/18
Inventor 唐越超汪长春杨东徐华龙
Owner FUDAN UNIV
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