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Preparation method of cobalt and nitrogen codoped carbon nanoparticle-carbon nanotube composite material

A nanoparticle and carbon nanotube technology, applied in the field of nanocomposite material preparation, can solve the problems of expensive instruments, complicated processes, unfavorable large-scale production, complicated processes, etc., and achieves low cost, aerobic reduction electrocatalytic performance, and simple process. Effect

Active Publication Date: 2018-04-13
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above-mentioned preparation methods are complex in process, high in cost, require special expensive instruments and complex processes, and are not conducive to large-scale production.

Method used

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  • Preparation method of cobalt and nitrogen codoped carbon nanoparticle-carbon nanotube composite material
  • Preparation method of cobalt and nitrogen codoped carbon nanoparticle-carbon nanotube composite material
  • Preparation method of cobalt and nitrogen codoped carbon nanoparticle-carbon nanotube composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Raw material ratio: the mass ratio of CdS nanowires to cobalt nitrate is 10:1, and the morphology is shown in the appendix figure 1 .

[0025] 1) Dissolve 50mg of P123, 120mg of Tris and 0.01g of cobalt nitrate in 100mL of deionized water, then add 0.10g of CdS nanowires into the above solution, and stir at room temperature;

[0026] 2) Weigh 0.10 g of dopamine and dissolve it in 50 mL of deionized water, add it to the above solution, and stir to react at room temperature;

[0027] 3) Centrifuge the reacted solution, wash it several times with ethanol, and then dry it in an oven to obtain the product;

[0028] 4) Put the obtained product into a quartz boat, program the temperature up to 900° C. under the protection of nitrogen, and heat-treat for 2 hours to obtain a nanoparticle-carbon nanotube composite material co-doped with cobalt and nitrogen.

Embodiment 2

[0030] The ratio of raw materials, the mass ratio of CdS nanowires and cobalt nitrate is 1:1, and the morphology is shown in the appendix figure 2 .

[0031] 1) Dissolve 100mg of P123, 120mg of Tris and 0.10g of cobalt nitrate in 100mL of deionized water, then add 0.10g of CdS nanowires into the above solution, and stir at room temperature;

[0032] 2) Weigh 0.20 g of dopamine and dissolve it in 50 mL of deionized water, add it to the above solution, and stir to react at room temperature;

[0033] 3) Centrifuge the reacted solution, wash it several times with ethanol, and then dry it in an oven to obtain the product;

[0034] 4) Put the obtained product into a quartz boat, program the temperature up to 900° C. under the protection of nitrogen, and heat-treat for 2 hours to obtain a nanoparticle-carbon nanotube composite material co-doped with cobalt and nitrogen.

[0035] It is found by testing that the specific surface area of ​​the composite material prepared in this embo...

Embodiment 3

[0037] The ratio of raw materials, the mass ratio of CdS nanowires and cobalt nitrate is 1:2, and the morphology is shown in the appendix image 3 .

[0038] 1) Dissolve 160mg P123, 120mg Tris and 0.60g cobalt nitrate in 100mL deionized water, then add 0.30g CdS nanowires to the above solution, and stir at room temperature;

[0039] 2) Weigh 0.30g of dopamine and dissolve it in 50mL of deionized water, add it to the above solution, and stir to react at room temperature;

[0040] 3) Centrifuge the reacted solution, wash it several times with ethanol, and then dry it in an oven to obtain the product;

[0041]4) Put the obtained product into a quartz boat, program the temperature up to 900° C. under the protection of nitrogen, and heat-treat for 1 hour to obtain a nanoparticle-carbon nanotube composite material co-doped with cobalt and nitrogen.

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Abstract

The invention relates to a preparation method of a cobalt and nitrogen codoped carbon nanoparticle-carbon nanotube composite material, and belongs to the technical field of preparation of nanocomposite materials. The problems of complex process, high cost, special expensive devices and adversity to large-scale production of existing preparation methods are solved. The preparation method of the cobalt and nitrogen codoped carbon nanoparticle-carbon nanotube composite material mainly adopts CdS nanowires, dopamine and cobalt nitrate as raw materials, the CdS nanowires are coated with the dopamine in the presence of cobalt nitrate, and the obtained sample undergoes high temperature calcination to obtain the composite material. The mass ratio of the CdS nanowires to the cobalt nitrate is controlled to adjust the morphology of the obtained material. The preparation method has the advantages of simple process and low cost. The composite material has a large specific surface area and rich meso-porous structures, so the material has an excellent oxygen reduction electrocatalysis performance, and has a wide application prospect in the fields of fuel cells, biological sensing, metal-air cells and supercapacitors.

Description

technical field [0001] The invention belongs to the technical field of nanocomposite material preparation, and in particular relates to a method for preparing cobalt and nitrogen co-doped nanoparticle-carbon nanotube composite material. The method is simple and convenient, convenient for large-scale preparation and low in cost. The prepared composite material has good electrocatalytic performance and has broad application prospects in fuel cells, metal-air batteries, biosensing, supercapacitors and other fields. Background technique [0002] Carbon nanotubes have the characteristics of large specific surface area, good electrical conductivity, and one-dimensional pore structure, and are considered to be a very ideal nanocarrier and a good catalyst carrier. Heteroatom co-doped nanoparticles-carbon nanotube composites have large specific surface area, rich pore structure and good conductivity, etc., and have unique advantages and advantages in fuel cells, biosensing, supercap...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/10B01J37/10B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B01J27/24B01J37/10B01J35/33B01J35/617
Inventor 陈璐璐郏建波
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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