Method for preparing nitrogen-containing carbon nano tube

A nanotube and nitrogen carbon technology is applied in the field of nitrogen-doped graphitized carbon nanomaterials and their synthesis, which can solve the problems of difficult control and low yield, and achieve the effects of easy control, low reaction temperature and uniform nitrogen distribution.
CN104016328AInactive Publication Date: 2014-09-03DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
Publication Date
2014-09-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a nitrogen-containing carbon nano tube and a preparation method thereof. The preparation method specifically comprises the following preparation steps: by taking Zn<2+> and Fe<2+> as co-metallic ions in a solvothermal system, complexing the metal ions and imidazole organic ligands, and synthesizing imidazole polymer nanospheres; mixing the spheres with dicyandiamide of different amounts (a mass ratio of the dicyandiamide to the imidazole polymer nanospheres is adjustable in a range from 2.5 to 20) or carbonizing pure imidazole polymer nanospheres at the temperature of 700-900 DEG C in N2 atmosphere for 3-4 hours, and obtaining a solid material; removing metals Zn and Fe by using aqua regia and nitric acid, and further obtaining the nitrogen-doped multi-walled carbon nano tube of which the tube diameter is adjustable in a range from 30 to 800nm and the nitrogen doping amount is adjustable in a range from 4 to 12 percent. The method is simple in process, low in equipment requirement, low in energy consumption and simple and easily controlled in reaction process; the tube diameter of the carbon nano tube is adjustable; and the nitrogen is uniformly distributed in the carbon tube and is high in content.
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Description

technical field

[0001] The invention relates to a nitrogen-doped graphitized nano-carbon material and a synthesis method thereof, in particular to a nitrogen-containing carbon nanotube and a preparation method thereof. Background technique

[0002] Nitrogen doping is a powerful means to change the properties of carbon materials, which extends the application of carbon materials from the field of catalysis to the microelectronics industry. Nitrogen-doped carbon nanotubes, as an important nitrogen-doped carbon material, have attracted extensive attention. Nitrogen-doped carbon nanotubes have good electron transport effects, and they are widely used in lithium-ion batteries, field emission materials, catalyst supports, supercapacitors, gas sensors, especially fuel cell cathode oxygen reduction reaction electrocatalysts and other fields. At present, the preparation methods of nitrogen-doped carbon nanotubes are mainly divided into: "chemical vapor deposition method" (CVD), "arc...

Claims

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