Novel sp2-sp3 hybrid Gradia carbon and preparation method thereof

A sp2-sp3, hybridization technology, applied in the direction of carbon preparation/purification, manufacturing tools, metal processing equipment, etc., to achieve the effects of cheap and easy to obtain, simple operation, and easy control of high-pressure synthesis parameters

Pending Publication Date: 2019-10-15
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these predicted sp2-sp3 hybridized crystalline carbons have not been experimentally confirmed

Method used

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  • Novel sp2-sp3 hybrid Gradia carbon and preparation method thereof
  • Novel sp2-sp3 hybrid Gradia carbon and preparation method thereof
  • Novel sp2-sp3 hybrid Gradia carbon and preparation method thereof

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preparation example Construction

[0030] The invention discloses a novel sp2-sp3 hybridized Gradia carbon and a preparation method thereof. The preparation method comprises the following steps:

[0031] (1) Put one or more sp2 hybrid carbon materials containing sp2 hybrid carbon materials, including graphite, fullerene, carbon nanotubes, amorphous carbon and onion carbon, into a pre-pressing mold, and press the tablet The sp2 hybrid carbon material is prefabricated into a straight cylindrical green body by machine action, and then placed in a vacuum hot-press sintering furnace for pre-sintering. The pre-sintering temperature is 400-1800 ° C, and the pre-sintering time is 10-60 minutes;

[0032] (2), put the sp2 hybridized carbon material body pre-fired in step (1) into the assembly block, then put the assembly block containing the sp2 hybridized carbon material body into a drying oven for drying, and dry The temperature is 100-250°C, and the drying time is 1-3h. ;

[0033] (3) Take out the assembly block in ...

Embodiment 1

[0042] Embodiment 1: Prepare Gradia carbon with graphite as sp2 hybridized carbon raw material

[0043] (1) Put the graphite pre-compression mold, use a tablet press to prefabricate a cylindrical blank for 5-10 minutes under a pressure of 20-40MPa, and then put it into a vacuum hot-pressing sintering furnace for pre-sintering, and the pre-sintering temperature is controlled at Between 1000-1600°C, the pre-burning time is controlled at 20-40min;

[0044] (2), put the sp2 hybridized carbon material body pre-fired in step (1) into the assembly block, then put the assembly block containing the sp2 hybridized carbon material body into a drying oven for drying, and dry The temperature is 180°C, and the drying time is 2 hours;

[0045] (3) Take out the assembly block in step (2) and cool it to room temperature, then put it into a T25 press produced by Rockland Research in the United States for high temperature and high pressure operation, the synthesis pressure is 5-25GPa, and the t...

Embodiment 2

[0048] Embodiment 2: Preparation of Gradia carbon with carbon nanotubes as sp2 hybrid carbon raw material

[0049] (1) Put the carbon nanotubes into the pre-pressed mold, and use a tablet press to prefabricate the cylindrical blank for 5-10 minutes under a pressure of 30-50 MPa, and then put it into a vacuum hot-pressing sintering furnace for pre-sintering, and the pre-sintering temperature Control at 800-1600°C, and control the pre-burning time at 15-40min;

[0050] (2) Put the carbon nanotube body pre-fired in step (1) into the assembly block, and then put the assembly block containing the carbon nanotube body into a drying oven for drying at a drying temperature of 180°C , the drying time is 2h;

[0051] (3) Take out the assembly block in step (2) and cool it to room temperature, then put it into a T25 press produced by Rockland Research in the United States for high temperature and high pressure operation, the synthesis pressure is 7-25GPa, and the temperature is 1000-180...

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Abstract

The invention relates to a novel sp2-sp3 hybrid Gradia carbon and a preparation method thereof, and belongs to the technical field of novel carbon materials. A novel sp2-sp3 hybrid crystal carbon having a basic structural unit formed by a sp2 hybrid graphite-like structural unit and a sp3 hybrid diamond-like structural unit is prepared under high-temperature and high-pressure synthesis conditionsby using sp2 hybrid carbon as a carbon raw material, and is named Gradia carbon. The Gradia carbon disclosed in the present invention refers to a novel sp2-sp3 hybrid carbon allotrope, and the crystalstructure varies depending on the width of the internal sp2 and sp3 structural units.

Description

technical field [0001] The invention relates to a novel sp2-sp3 hybridized Gradia carbon and a preparation method thereof, belonging to the technical field of carbon materials. Background technique [0002] Carbon has many allotropes, and the appearance of each allotrope has greatly promoted the development of science and technology and social progress. These carbon allotropes include diamond, fullerene, carbon nanotubes, graphene, carbene carbon, graphyne, etc., among which the discoverers of fullerene and graphene won the Nobel Prize in Chemistry in 1996 and the Nobel Prize in 2010 respectively. Bell Prize in Physics. In the past more than a hundred years, efforts to explore new carbon allotropes have never stopped. [0003] The various allotropes of carbon originate from the three hybridization modes of sp, sp2 and sp3. sp hybridization is the hybridization of one 2s orbital and one 2p orbital in the same atom, sp2 hybridization is the process of hybridization of one 2...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/05
CPCC01B32/05C01P2002/82C01P2002/77C01P2004/04B24D3/00C01P2002/74H01L29/1602
Inventor 赵智胜罗坤刘兵胡文涛孙磊何巨龙于栋利田永君徐波柳忠元
Owner YANSHAN UNIV
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