Method for rapid solvent-free preparation of heteroatom-doped graphitized carbon with high specific surface area

A high specific surface area, graphitized carbon technology, applied in the preparation/purification of carbon, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of large solvent usage, cumbersome steps, high cost, etc., and achieve simple operation and rich surface The effect of short structure and process

Inactive Publication Date: 2017-11-03
CENT SOUTH UNIV
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Problems solved by technology

[0004] Aiming at the disadvantages of high energy consumption, high cost, large amount of solvent used and cumbersome steps in the preparation process of graphitized carbon in the prior art, the purpose of the present invention is to provide a simple and convenient operation, short cycle, and without the use of solvents. The next step is to prepare heteroatom-doped graphitized carbon with high specific surface area

Method used

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  • Method for rapid solvent-free preparation of heteroatom-doped graphitized carbon with high specific surface area
  • Method for rapid solvent-free preparation of heteroatom-doped graphitized carbon with high specific surface area
  • Method for rapid solvent-free preparation of heteroatom-doped graphitized carbon with high specific surface area

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Embodiment 1

[0032] Grind 1g of metaldehyde yellow solid with 10g of sodium benzenesulfonate, place it in a porcelain boat, seal it, and calcinate at 1000°C for 2 hours under the protection of argon, with a heating rate of 5°C per minute. After the reaction, cool, wash, and dry , to obtain high specific surface area graphitized carbon doped with about 200 mg of sulfur atoms. figure 1 It is its XRD picture, it can be observed that the sulfur atom-doped high specific surface area graphitized carbon prepared by this method has an obvious carbon diffraction peak on the (001) crystal plane. figure 2 It is its scanning electron microscope photo, and it can be seen that the high specific surface area graphitized carbon doped with sulfur atoms is composed of many nanometer ultrathin sheets. image 3 A high-resolution transmission electron microscope picture of the obtained sulfur atom-doped graphitized carbon with high specific surface area is shown, and a layer of obvious lattice stripes can als...

Embodiment 2

[0039] Mix and grind 500mg of sodium dodecylbenzenesulfonate and 2000mg of polyacetone, place it in a tube furnace at 1100°C in an argon atmosphere for 2 hours, and react for 2h with a heating rate of 2°C / min to obtain about 50mg of the product. The sulfur-doped graphitized carbon has a specific surface area of ​​968.5m 2 g -1 , and its sulfur content is 3.2%.

Embodiment 3

[0043] Mix and grind 2g of sodium phenylphosphonate and 8g of polyacetone, place it in a tube furnace, raise the temperature at 10°C / min to 1200°C in an argon atmosphere for 1 hour, and obtain about 100mg of phosphorus-doped high Specific surface area of ​​graphitized carbon, XPS results show that its phosphorus content is 8.6%, and its specific surface area is 687.6m 2 g -1 .

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Abstract

The invention discloses a method for rapid solvent-free preparation of heteroatom-doped graphitized carbon with high specific surface area. The method comprises the following steps: carrying out grinding and mixing on organic sulfonate and/or organic phosphonate and oxygen-containing organic polymer; then putting a mixture in protective atmosphere, and carbonizing at high temperature; washing and drying a carbonized product to obtain the heteroatom-doped graphitized carbon with the high specific surface area and mesopore and micropore structures. The method has the advantages of simple operation, no need of solvent, high yield and controllable heteroatom content; in addition, the production cost is greatly reduced, and industrial production is facilitated.

Description

technical field [0001] The present invention relates to a preparation method of graphitized carbon, in particular to a method of graphitized carbon with high specific surface area doped with heteroatoms, and in particular to a fast, convenient, solvent-free method through organic small molecular salt and organic polymer The invention discloses a method for preparing heteroatom-doped high specific surface area graphitized carbon material under conditions; it belongs to the technical field of carbon material preparation. Background technique [0002] Graphene has attracted much attention in recent years due to its excellent electrical, thermal and mechanical properties, and is extremely popular in the fields of catalysis, energy storage and gas storage. However, the current preparation methods of graphene are complicated and costly, which greatly limits its application. Graphitized carbon has similar structural characteristics to graphene, has excellent electrical and thermal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05C01B32/205
CPCC01P2002/72C01P2002/82C01P2002/85C01P2004/03C01P2004/04C01P2006/12C01P2006/16
Inventor 纪效波邹国强侯红帅葛鹏赵刚刚
Owner CENT SOUTH UNIV
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