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Method for preparing nitrogen-doped nanoporous carbon microspheres by using sepia as raw material

A technology of nanopores and carbon microspheres, applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science, can solve the problems of complex process, limited application of carbon materials, high cost, etc., and achieve good conductivity, The effect of high chemical stability and good conductivity

Inactive Publication Date: 2019-08-06
EAST CHINA UNIV OF TECH
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Problems solved by technology

[0004] Although great progress has been made in the synthesis of nanoporous carbon spheres, there is still a large room for development in terms of reducing the preparation cost and improving the performance of nanoporous carbon spheres, and the commercial application of nanoporous carbon microspheres faces great challenges. challenge
Although there are many types of carbon materials and different preparation methods, there are disadvantages such as high cost and complicated process, which limit the application of carbon materials.

Method used

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  • Method for preparing nitrogen-doped nanoporous carbon microspheres by using sepia as raw material
  • Method for preparing nitrogen-doped nanoporous carbon microspheres by using sepia as raw material
  • Method for preparing nitrogen-doped nanoporous carbon microspheres by using sepia as raw material

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Embodiment Construction

[0029] refer to figure 1 A method for preparing nitrogen-doped nanoporous carbon microspheres using squid ink as a raw material, comprising the following steps:

[0030] A. Take fresh squid, take out the ink sac, squeeze out the ink, and take the melanin of the sediment;

[0031] B, the deposit in step A is carried out pre-carbonization, then natural cooling;

[0032] C, the pre-carbonized product in step B is placed in potassium hydroxide aqueous solution and fully activated;

[0033] D, the activated product in step C is carbonized again, then naturally cooled;

[0034] E. Soak in hydrochloric acid solution;

[0035] F. Use pure water to filter, wash and dry to obtain monodisperse nanoporous carbon microspheres doped with nitrogen atoms.

[0036] In step A, soak in water at 0-25° C. for 8-12 hours, wash and separate several times at a speed of 500-12000 rpm, and collect the melanin of the precipitate.

[0037] In step B, the specific method of pre-carbonization is,

[...

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Abstract

The invention discloses a method for preparing nitrogen-doped nanoporous carbon microspheres by using sepia as a raw material. The method comprises: A, taking live squid, taking out ink sac, extrudingink, carrying out centrifuging grading, and taking the black pigment of the precipitate; B, pre-carbonizing the precipitate obtained in the step A, and naturally cooling; C, placing the pre-carbonized product obtained in the step B in a potassium hydroxide aqueous solution, and completely activating; D, carbonizing the activated product obtained in the step C again, and naturally cooling; E, soaking in a hydrochloric acid solution; and F, carrying out suction filtration cleaning with pure water, and drying to obtain the monodisperse nitrogen atom-doped nanoporous carbon microspheres. According to the present invention, the method can improve the deficiencies in the prior art, and is simple, and the product has high performance price ratio.

Description

technical field [0001] The invention relates to the technical field of new materials, in particular to a nitrogen-doped nanoporous carbon microsphere using squid ink as a raw material and a preparation method thereof. Background technique [0002] In recent years, great progress has been made in the synthesis and application of carbon materials. Such as graphene, carbon nanotubes and commercial activated carbon etc. Usually, the preparation of such materials involves the synthesis of precursors, and then hydrothermal or high-temperature gas reactions introduce heteroatom-containing small molecules to obtain heteroatom-doped carbon materials. However, the preparation methods of carbon materials such as graphene or carbon tubes are complex and costly. [0003] Nanoporous carbon microspheres not only have the advantages of large controllable specific surface area, regular geometric structure, good fluidity, adjustable porosity and controllable particle size distribution; Dop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/318C01B32/348B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01P2002/54C01P2002/80C01P2004/64C01P2004/62C01P2006/40C01P2004/03
Inventor 任广元陈泉水朱业安
Owner EAST CHINA UNIV OF TECH
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