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Ultrahigh specific surface area mesoporous carbon nanosphere as well as preparation method and application thereof

A technology of ultra-high specific surface area, mesoporous carbon, applied in nano-carbon and other directions, can solve problems such as environmental pollution, high equipment requirements, and material structure collapse.

Active Publication Date: 2017-04-26
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although people can obtain a high specific surface area through chemical activation, the activation process involves a large amount of acid-base reagents, requires high equipment, and is likely to cause environmental pollution, and harsh activation will lead to the collapse of the material structure.

Method used

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  • Ultrahigh specific surface area mesoporous carbon nanosphere as well as preparation method and application thereof
  • Ultrahigh specific surface area mesoporous carbon nanosphere as well as preparation method and application thereof
  • Ultrahigh specific surface area mesoporous carbon nanosphere as well as preparation method and application thereof

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Embodiment 1

[0077] The embodiment of the present invention provides a method for preparing mesoporous carbon nanospheres with ultra-high specific surface area, comprising the following steps:

[0078] (1) Dissolve 0.17ml of aniline and 0.13ml of pyrrole in 12ml of ethanol / water mixed solvent (the volume ratio of ethanol and water is 1:2) to form solution 1; 30mg of PEO 113 -b-PS 445 Dissolve in 4ml tetrahydrofuran to form solution 2, then add solution 1 to solution 2 to self-assemble to obtain a light blue emulsion; after magnetic stirring for 0.5h, then ultrasonically disperse for 0.5h, then place in an ice-water bath and continue stirring for 0.5h , then, add 2ml of 0.41g / ml ammonium persulfate aqueous solution pre-cooled to 0-5°C, stir rapidly for 50s, and then stand for reaction in an ice-water bath for 12h. After the reaction, filter under reduced pressure; use ethanol, washing the product with water until the filtrate is neutral, and drying the washed product in a vacuum oven at 50°C...

Embodiment 2

[0084] The embodiment of the present invention provides a method for preparing mesoporous carbon nanospheres with ultra-high specific surface area, comprising the following steps:

[0085] (1) Dissolve 0.17ml of aniline and 0.13ml of pyrrole in 12ml of ethanol / water mixed solvent (the volume ratio of ethanol and water is 1:2) to form solution 1; 30mg of PEO 113 -b-PS 445 Dissolve in 4ml tetrahydrofuran to form solution 2, then add solution 1 to solution 2 to self-assemble to obtain a light blue emulsion; after magnetic stirring for 0.5h, then ultrasonically disperse for 0.5h, then place in an ice-water bath and continue stirring for 0.5h , then, add 2ml of 0.41g / ml ammonium persulfate aqueous solution pre-cooled to 0-5°C, stir rapidly for 50s, and then stand for reaction in an ice-water bath for 12h. After the reaction, filter under reduced pressure; use ethanol, Washing the product with water until the filtrate is neutral, and drying the washed product in a vacuum oven at 50...

Embodiment 3

[0088] The embodiment of the present invention provides a method for preparing mesoporous carbon nanospheres with ultra-high specific surface area, comprising the following steps:

[0089] (1) Dissolve 0.17ml of aniline and 0.13ml of pyrrole in 12ml of ethanol / water mixed solvent (the volume ratio of ethanol and water is 1:2) to form solution 1; 30mg of PEO 113 -b-PS 445 Dissolve in 4ml tetrahydrofuran to form solution 2, then add solution 1 to solution 2 to self-assemble to obtain a light blue emulsion; after magnetic stirring for 0.5h, then ultrasonically disperse for 0.5h, then place in an ice-water bath and continue stirring for 0.5h , then, add 2ml of 0.41g / ml ammonium persulfate aqueous solution pre-cooled to 0-5°C, stir rapidly for 50s, and then stand for reaction in an ice-water bath for 12h. After the reaction, filter under reduced pressure; use ethanol, Wash the product with water until the filtrate is neutral, and dry the washed product in a vacuum oven at 50°C for...

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Abstract

The invention provides an ultrahigh specific surface area mesoporous carbon nanosphere as well as a preparation method and application thereof, wherein the ultrahigh specific surface area mesoporous carbon nanosphere is prepared by carbonizing aniline, pyrrole and a block copolymer at high temperature by a mesoporous carbon nanosphere precursor through a copolymerization-induction self-assembly method and is of a mesoporous / microporous shell layer structure with the diameter being 200-800nm, the size of mesopores being 6-20nm, the specific surface area being 372-2520m<2> / g and the total pore volume being 0.24-1.43cm<3> / g. The ultrahigh specific surface area mesoporous carbon nanosphere integrates the unique advantages of a porous carbon material and a mesoporous material, is larger in specific surface area and pore volume, good in conductivity and ion transmission performance and has wide application prospect in various fields of energy, catalysis, adsorption, biomedicines and the like due to a proper quantity of nitrogen doping and modifiability of a skeleton wall.

Description

technical field [0001] The invention relates to the field of nanomaterials, in particular to a mesoporous carbon nanosphere with an ultra-high specific surface area and a preparation method and application thereof. Background technique [0002] Mesoporous carbon nanospheres are a kind of carbon nanospheres with mesoporous size pores. As an important porous carbon material, due to their high specific surface area, strong adsorption capacity, stable chemical properties, good skeleton electrical conductivity, fast ion transport, With the advantages of adjustable pore structure and surface chemical properties, it has wide application potential in the fields of energy, adsorption, catalysis, separation and environment, and biomedicine. [0003] At present, the main method for preparing mesoporous carbon nanospheres is template method, including hard template method and soft template method. The commonly used hard templating agent is mainly silica, and the soft templating agent i...

Claims

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Application Information

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IPC IPC(8): C01B32/15
CPCC01P2004/32C01P2004/03C01P2004/04C01P2006/12C01P2006/16C01P2006/17C01P2006/14C01P2004/62C01P2006/40
Inventor 吴丁财唐志伟符若文刘绍鸿郑冰娜
Owner SUN YAT SEN UNIV
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