Preparation method of carbon nanomaterial

Abstract

The invention relates to a preparation method of a carbon nanomaterial. Two graphite rods are taken as electrodes for preparing the carbon nanomaterial with an arc process, cathode and anode of a cathode graphite rod and an anode graphite rod are placed oppositely in a reaction medium, 10-1500 A current is fed for direct-current arc discharge, and a prepared graphite rod anode product is the carbon nanomaterial, wherein the reaction medium is any one of liquid nitrogen, liquid argon and water, when the reaction medium is liquid nitrogen or liquid argon, the anode graphite rod product is a carbon nanohorn; when the reaction medium is water, the anode graphite rod product is a carbon onion. The method has the advantages that reaction process is simplified, reaction speed is increased effectively, and diverse carbon nano-products are provided.

Description

technical field [0001] The invention belongs to the technical field of carbon nanomaterial preparation, and in particular relates to a preparation method of carbon nanomaterial. Background technique [0002] With the rapid development of carbon nanotechnology, single-walled carbon nanohorns have been more and more widely used in the fields of materials science and biomedicine due to their special tubular structure and characteristics. The current production process of carbon nanohorns is mostly to introduce high-voltage arcs to cathode graphite rods and anode graphite rods in a compressed air atmosphere, to prepare carbon nanohorns in a negative pressure atmosphere, or to prepare them by laser sputtering in an argon atmosphere. Carbon nanohorns; Among them, when carbon nanohorns are prepared in a compressed air atmosphere, the production process of carbon nanohorns is relatively cumbersome, and the operator must not only complete the operation in the compressed air atmospher...

AI Technical Summary

Problems solved by technology

The current production process of carbon nanohorns is mostly to introduce high-voltage arcs to cathode graphite rods and anode graphite rods in a compressed air atmosphere, to prepare carbon nanohorns in a negative pressure atmosphere, or to prepare them by laser sputtering in an argon atmosphere. Carbon nanohorns; Among them, when carbon nanohorns are prepared in a compressed air atmosphere, the production process of carbon nanohorns is relatively cumbersome, and the operator must not only complete the operation in the compressed air atmosphere environment, but also control the introduced high-voltage arc. As a result, there are many working conditions and environments that need to be controlled during the preparation of carbon nanohorns. Once the operator does not operate properly, the preparation of carbon nanohorns will fail, which will not only waste raw materials, but even affect the overall progress of carbon nanohorn preparation; On the one hand, the current method for preparing carbon nanohorns produces relatively single products, and cannot effectively prepare different types of carbon nanomaterials under the same reaction conditions, resulting in low production efficiency of carbon nanomaterials; among them, in argon When carbon nanomaterials are prepared by laser sputtering under atmosphere, not only the preparation equipment is expensive, but also the preparation efficiency is low, resulting in high preparation costs