Method for preparing carbon nanohorn with electric arc method

A technology of carbon nanohorn and arc method, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of complex operation of carbon nanohorn, achieve low production cost, high product purity, The effect of simple equipment

Inactive Publication Date: 2015-05-13
北京清大际光科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention proposes a method for preparing carbon nanohorns by an electric arc method, which solves the problem of complex operations in the preparation of carbon nanohorns by the existing electric arc method

Method used

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  • Method for preparing carbon nanohorn with electric arc method

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Embodiment 1

[0022] A method for preparing carbon nanohorns by an electric arc method, using graphite rods as the cathode and anode poles of the carbon nanohorns prepared by the arc method, the anode and cathode poles are placed oppositely, and DC arc discharge is carried out under high current and compressed air atmosphere, during the DC arc discharge process In the process, the anode graphite rod was continuously consumed, and the distance between the cathode and anode was kept at 2nm to obtain carbon nanohorns.

[0023] Among them, the graphite rod is a square spectrum graphite electrode, and the size of the square spectrum graphite electrode is 30mm*30mm*310mm.

[0024] Among them, during DC arc discharge, the discharge current is 1500A, and the pressure of the compressed air atmosphere is -3.5*10 -2 MPa, the arc burning temperature is 2200°C.

[0025] Wherein, the obtained carbon nanohorn is burned in the air to remove a small amount of amorphous carbon in the nanographene, and the b...

Embodiment 2

[0027] A method for preparing carbon nanohorns by an electric arc method, using graphite rods as the cathode and anode poles of the carbon nanohorns prepared by the arc method, the anode and cathode poles are placed oppositely, and DC arc discharge is carried out under high current and compressed air atmosphere, during the DC arc discharge process In the process, the anode graphite rod was continuously consumed, and the distance between the cathode and anode was kept at 1nm to obtain carbon nanohorns.

[0028] Among them, the graphite rod is a square spectrum graphite electrode, and the size of the square spectrum graphite electrode is 30mm*30mm*310mm.

[0029] Among them, during DC arc discharge, the discharge current is 1000A, and the pressure of the compressed air atmosphere is -3*10 -2 MPa, the arc burning temperature is 2000°C.

[0030] Wherein, the obtained carbon nanohorn is burned in the air to remove a small amount of amorphous carbon in the nanographene, and the bur...

Embodiment 3

[0032] A method for preparing carbon nanohorns by an electric arc method, using graphite rods as the cathode and anode poles of the carbon nanohorns prepared by the arc method, the anode and cathode poles are placed oppositely, and DC arc discharge is carried out under high current and compressed air atmosphere, during the DC arc discharge process In the process, the anode graphite rod was continuously consumed, and the distance between the cathode and anode was kept at 3nm to obtain carbon nanohorns.

[0033] Among them, the graphite rod is a square spectrum graphite electrode, and the size of the square spectrum graphite electrode is 30mm*30mm*310mm.

[0034] Among them, during DC arc discharge, the discharge current is 2000A, and the pressure of the compressed air atmosphere is -4*10 -2 MPa, the arc burning temperature is 2500°C.

[0035] Wherein, the obtained carbon nanohorn is burned in the air to remove a small amount of amorphous carbon in the nanographene, and the bur...

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Abstract

The invention provides a method for preparing a carbon nanohorn with an electric arc method. Graphite rods are taken as an anode and a cathode of the carbon nanohorn, the anode and the cathode are placed oppositely, direct-current electric arc discharge is performed under the high-current and compressed air atmosphere, the graphite rods are continuously consumed in the direct-current electric arc discharge process, the distance between the anode and the cathode is kept 1-3 nm, and the carbon nanohorn is prepared. The scan and transmission electron microscopy representation of the prepared carbon nanohorn proves that a carbon nanohorn product has high purity and has the diameter of 2-5 nm, and spherical aggregate with a diameter of 80-100 nm is aggregated.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterial preparation technology, and in particular relates to a method for preparing carbon nanohorns by an electric arc method. Background technique [0002] With the rapid development of nanotechnology, single-walled carbon nanohorns have been more and more widely used in the fields of material science and biomedicine because of their special tube-cone structure and characteristics. Since Ijima first discovered carbon nanohorns in 1999, related research has gradually become a research hotspot in the field of new materials. Carbon nanohorns have many attractive physical and chemical properties, such as high electrical conductivity, good mechanical properties, and large specific surface area. , Large aspect ratio, etc. The surface of the carbon nanohorn can be functionalized, which provides a platform for its functional modification and expands its application range. The carbon nanohorn collec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00B82Y40/00
Inventor 孙清友
Owner 北京清大际光科技发展有限公司
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