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Method for synthesis of cobalt nanoparticle and bamboo-like nitrogen doped carbon nanotube composite material

A technology of nitrogen-doped carbon and composite materials, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., and can solve the problems of uneven diameter of carbon nanotubes, inability to produce in large quantities, and loose compounding. , to achieve the effect of uniform product size and shape, unique product structure and short reaction cycle

Inactive Publication Date: 2015-09-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problems of cumbersome steps in the prior art, and the obtained carbon nanotubes have uneven diameters, are not tightly combined, and cannot be mass-produced, and provide a composite material of cobalt nanoparticles and bamboo-shaped nitrogen-doped carbon nanotubes method

Method used

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  • Method for synthesis of cobalt nanoparticle and bamboo-like nitrogen doped carbon nanotube composite material
  • Method for synthesis of cobalt nanoparticle and bamboo-like nitrogen doped carbon nanotube composite material
  • Method for synthesis of cobalt nanoparticle and bamboo-like nitrogen doped carbon nanotube composite material

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Embodiment 1

[0026] (1) Dissolve cobalt nitrate and melamine respectively in methanol according to the molar ratio of 1:200, stir magnetically for 30 minutes until fully dissolved, then heat and evaporate at 60 degrees, evaporate to dryness, cool to room temperature naturally, and grind to obtain a sample powder.

[0027] (2) The obtained sample powder is put into a tube furnace and fed with nitrogen for calcination, the temperature is raised to 400 degrees at 5 degrees per minute and kept for 1 hour, and then raised to 700 degrees at 10 degrees per minute and kept for 3 hours to obtain a sample product.

[0028] (3) The obtained sample product is treated with 0.5M hydrochloric acid, then washed and centrifuged with deionized water and absolute ethanol, and then dried in a vacuum oven at 80 degrees to obtain cobalt nanoparticles and bamboo-shaped nitrogen-doped carbon nanotube composites.

Embodiment 2

[0030] (1) Dissolve cobalt acetate and dicyandiamine in ethanol at a molar ratio of 1:2, and stir magnetically for 30 minutes until fully dissolved. Then heated and evaporated at 60°C, evaporated to dryness, cooled to room temperature naturally, and ground to obtain sample powder.

[0031] (2) The obtained sample powder is put into a tube furnace and fed with nitrogen for calcination, the temperature is raised to 400 degrees at 5 degrees per minute and kept for 1 hour, and then raised to 700 degrees at 10 degrees per minute and kept for 3 hours to obtain a sample product.

[0032] (3) The obtained sample product is treated with 0.5M sulfuric acid, then washed and centrifuged with deionized water and absolute ethanol, and then dried in a vacuum oven at 80 degrees to obtain cobalt nanoparticles and bamboo-shaped nitrogen-doped carbon nanotube composites.

Embodiment 3

[0034] (1) Dissolve cobalt chloride and cyanamide in deionized water at a molar ratio of 1:10, and stir magnetically for 30 minutes until fully dissolved. Then heated and evaporated at 60°C, evaporated to dryness, cooled to room temperature naturally, and ground to obtain sample powder.

[0035] (2) The obtained sample powder was put into a tube furnace and fed with nitrogen for calcination, and the temperature was raised to 500 degrees at 2 degrees per minute and kept for 3 hours to obtain the sample product.

[0036] (3) The obtained sample product is treated with 0.5M nitric acid, then washed and centrifuged with deionized water and absolute ethanol, and put into a vacuum drying oven at 80 degrees to dry to obtain cobalt nanoparticles and bamboo-shaped nitrogen-doped carbon nanotube composites.

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Abstract

The invention discloses a method for synthesis of a cobalt nanoparticle and bamboo-like nitrogen doped carbon nanotube composite material. The method includes: dissolving a soluble cobalt salt and an amine polymer in a hydrophilic reagent according to a mole ratio of 1:(2-200), performing evaporation at 60DEG C, conducting grinding after cooling, performing calcination at 400-1400DEG C under nitrogen atmosphere, then treating the sample with acid, and carrying out washing, centrifugation and drying so as to obtain the cobalt nanoparticle and bamboo-like nitrogen doped carbon nanotube composite material. The obtained cobalt nanoparticles have small particle size and are employed to coat the head of a carbon nanotube evenly so as to combine tightly with the carbon nanotube. The composite material has application prospects in fuel cell anode materials, lithium ion battery cathode materials and the like. The method designed by the invention has the advantages of easily available raw materials, simple process and no pollution, short preparation period, mild reaction conditions, low cost, and mass synthesis capability, etc.

Description

technical field [0001] The invention relates to a method for synthesizing a cobalt nanoparticle and bamboo-shaped nitrogen-doped carbon nanotube composite material, and belongs to the technical field of carbon nanotube one-dimensional composite material preparation. Background technique [0002] The emergence of carbon nanotubes has opened up a new important research field of nanomaterials technology, and brought the scientific research of low-dimensional nanomaterials to the one-dimensional (1D) era. In 1991, Iijima ( Iijima) accidentally discovered carbon nanotubes (Carbon nanotube). As a typical 1D nanostructure material, carbon nanotubes exhibit novel physical and chemical properties, especially high thermal stability and surface carrier mobility, making carbon nanotubes widely used in new energy, sensors, supercapacitors, field emission In just a few years, it has been successfully applied to conductive structural materials, sensing and display equipment, new energy st...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B22F9/24B82Y30/00
Inventor 曹传宝曹泰
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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