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Nitrogen-doped hollow carbon nanometer material preparation method

A carbon nanomaterial and nanomaterial technology, applied in the field of nanomaterial preparation, can solve the problems of limiting the wide application of nitrogen-doped hollow carbon materials, polluting the environment, low yield, etc., and achieving excellent electrochemical performance, excellent cycle stability, high Effect of magnification performance

Active Publication Date: 2017-06-30
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For the CVD method, the yield is low
In addition, the hard template method also needs to use HCl or HF to remove the template, which makes the steps cumbersome, time-consuming, and pollutes the environment
The disadvantages mentioned above greatly limit the wide application of nitrogen-doped hollow carbon materials.

Method used

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Examples

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Embodiment 1

[0027] A method for preparing a nitrogen-doped hollow carbon nanomaterial, comprising:

[0028] (1) Clean the nickel foam substrate in acetone, ethanol and distilled water in sequence. Then soak it in 5mmol·L -1 10min in ethanol solution of zinc nitrate, take it out and quickly dry it at 100°C, repeat 3-5 times. Finally, the substrate was heated to 350°C in air for 30 minutes to decompose zinc nitrate to obtain a ZnO seed layer;

[0029] (2) Prepare 30mmol L in a polytetrafluoroethylene reactor -1 80 mL of zinc nitrate aqueous solution, slowly drop 3 mL of concentrated ammonia water into it, and after mixing evenly, put the substrate with ZnO seed layer prepared in step (1) vertically into the reaction kettle. Finally, the reaction kettle was placed in an oven, and reacted at 90° C. for 6 hours. After the reaction, it was washed and dried to obtain a ZnO nanorod array template;

[0030] (3) Take 0.20g triaminotrinitrobenzene (TATB) and spread it on the bottom of the porcel...

Embodiment 2

[0032] A method for preparing a nitrogen-doped hollow carbon nanomaterial, comprising:

[0033] (1) Clean the carbon cloth substrate in acetone, ethanol and distilled water in sequence. Then soak it in 5mmol·L -1 10min in ethanol solution of zinc nitrate, take it out and quickly dry it at 100°C, repeat 3-5 times. Finally, the substrate was heated to 350°C in air for 30 minutes to decompose zinc nitrate to obtain a ZnO seed layer;

[0034] (2) Prepare 30mmol L in a polytetrafluoroethylene reactor -1 80 mL of zinc nitrate aqueous solution, slowly drop 3 mL of concentrated ammonia water into it, and after mixing evenly, put the substrate with ZnO seed layer prepared in step (1) vertically into the reaction kettle. Finally, the reaction kettle was placed in an oven, and reacted at 90° C. for 6 hours. After the reaction, it was washed and dried to obtain a ZnO nanorod array template;

[0035] (3) Take 0.25g of triaminotrinitrobenzene (TATB) and spread it on the bottom of the po...

Embodiment 3

[0037] A method for preparing a nitrogen-doped hollow carbon nanomaterial, comprising:

[0038] (1) Clean the carbon cloth substrate in acetone, ethanol and distilled water in sequence. Then soak it in 5mmol·L -1 10min in ethanol solution of zinc nitrate, take it out and quickly dry it at 100°C, repeat 3-5 times. Finally, the substrate was heated to 350°C in air for 30 minutes to decompose zinc nitrate to obtain a ZnO seed layer;

[0039] (2) Prepare 30mmol L in a polytetrafluoroethylene reactor -1 80 mL of zinc nitrate aqueous solution, slowly drop 3 mL of concentrated ammonia water into it, and after mixing evenly, put the carbon cloth substrate with ZnO seed layer prepared in step (1) vertically into the reaction kettle. Finally, the reaction kettle was placed in an oven, and reacted at 90° C. for 6 hours. After the reaction, it was washed and dried to obtain a ZnO nanorod array template;

[0040] (3) Spread 0.25g of triaminotrinitrobenzene (TATB) on the bottom of the p...

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Abstract

The invention discloses a nitrogen-doped hollow carbon nanometer material preparation method, which comprises: taking different amounts of triaminotrionitrobenzene, spreading on the bottom portion of a porcelain boat, placing the triaminotrionitrobenzene spread on the bottom portion of the porcelain boat and a ZnO nanometer material in a tubular furnace, maintain a certain distance between the two materials, heating the TATB under the protection of an inert or reducing atmosphere, and carrying out sublimation, pyrolysis, carbonization and other reactions to obtain the nitrogen-doped hollow carbon nanometer material. According to the present invention, the carbon source required in the traditional preparation is replaced with the high nitrogen content organic small molecule TATB, such that the nitrogen-doped hollow carbon nanometer material can be prepared in the one step only with the one substance without the additional introduction of the nitrogen source, and the template does not require the acid corrosion.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a method for preparing a hollow carbon nanomaterial, in particular to a method for preparing a nitrogen-doped hollow carbon nanomaterial. Background technique [0002] In recent years, nitrogen-doped carbon nanomaterials have attracted the attention of many researchers at home and abroad. Among them, the hollow nitrogen-doped carbon nanomaterials (NHC) are particularly prominent. NHC not only has the advantages of large specific surface area, high electrical conductivity, and good chemical stability, but the introduction of nitrogen atoms makes the electrical conductivity and chemical activity of hollow carbon materials controllable. [0003] At present, the methods for preparing nitrogen-doped hollow carbon nanomaterials (such as nitrogen-doped hollow carbon spheres, nitrogen-doped hollow carbon nanoparticles, nitrogen-doped hollow carbon nanotubes, nitrogen-dope...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/15
CPCC01P2002/85C01P2004/03C01P2004/04C01P2004/16C01P2004/80C01P2006/40
Inventor 李瑞杨光成李小东刘有松杨云涛王军
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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