Method for preparing carbon nano-fine particle, apparatus for preparing the same and mono-layer carbon nanotube
AssigneesHirofumi Takikawa, Futaba Corporation, Tokai Carbon Co., Ltd.
InventorsHirofumi Takikawa, Mitsukuni Ikeda, Shigeo Itoh, Tomonori Tahara
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Abstract
A graphite cathode and a graphite anode are placed opposite each other through an insulating plate having a notch. A voltage is applied between both of the electrodes to generate arc discharge at the notch of the insulating plate. A given area of the graphite anode is evaporated from an electrode point of the arc discharge, and simultaneously an arc jet is generated from the notch. Thereby, a carbon nanoparticle comprising soot of carbon nanomaterial containing carbon nanohorn is generated. The soot is deposited on a recovering plate for recovery.
Claims16
A method of preparing a carbon nano-fine particle comprising:
- placing a first electrode and a second electrode of carbon as a main component opposite each other through an insulating member having at least one notch;
- applying a voltage between the first electrode and the second electrode to generate arc discharge at the notch between the first electrode and the second electrode opposite each other in the atmosphere or air;
- evaporating the carbon material of the second electrode by the arc discharge to generate arc jet containing the carbon material from the notch;
- and
- cooling the arc jet to form soot containing a carbon nanomaterial.
An apparatus for preparing a carbon nano-fine particle comprises:
- a set of electrodes comprising a first electrode and a second electrode of carbon material as a main component which are held in a given space through an insulating member having at least one notch in the atmosphere or air;
- an arc discharge generator for applying a voltage between the first electrode and the second electrode to generate the arc discharge by which the carbon material is evaporated to generate an arc jet containing the carbon material from the notch;
- and
- a recovering member for recovering soot containing the carbon nanomaterial formed by cooling the arc jet.
A short mono-layer carbon nanotube having a diameter of between approximately 0.7 nm and 5 nm and a length of between approximately 3 nm and 100 nm.
Dependencies are inferred from the claim text.