Device for preparing carbon nano tube by arc process

Abstract

The invention relates to a device for preparing a carbon nano tube by an arc process in the nano technical field. The device comprises a cathode graphite rod, an anode graphite rod, a reaction cavity,an anode graphite rod propelling device, an air inlet, an extraction opening, a scraping plate, a thermocouple, a collecting turntable, a drive motor and a carbon nano tube collecting box, wherein the anode graphite rod is fixed on the anode graphite rod propelling device and is arranged opposite to the cathode graphite rod, and a clearance is remained between the cathode graphite rod and the anode graphite rod; the collecting turntable is connected with the drive motor, the scraping plate is tangential to the collecting surface of the collecting turntable, the carbon nano tube collecting boxis arranged under the collecting turntable, and the thermocouple and the drive motor are fixed on the reaction cavity; and the air inlet and the extraction opening are arranged on the reaction cavity. The device enables the carbon nano tube to grow on the collecting turntable by keeping a relatively stable temperature, also enables the growing carbon nano tube not to absorb amorphous carbon, andother impurities generated later and further improves the purity of the prepared carbon nano tube.

Description

technical field [0001] The invention relates to a device in the field of nanotechnology, in particular to a device for preparing carbon nanotubes by an arc method. Background technique [0002] Since the discovery of carbon nanotubes (CNTs) in 1991, due to their excellent mechanical properties and adjustable electrical properties, carbon nanotubes have been widely used in nanoelectronic devices, field emission technology, biological drug loading, and hydrogen storage technology. And many other fields have significant application potential. Carbon nanotubes can be divided into single-wall carbon nanotubes (SWNT), double-wall carbon nanotubes (DWNT), and multi-wall carbon nanotubes (MWNT). Among them, single-wall carbon nanotubes, as excellent one-dimensional nanomaterials, are used to manufacture nanoelectronic devices such as field effect transistors and thin film transistors because of their high carrier mobility. They are expected to replace silicon materials and become t...

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Problems solved by technology

However, due to the continuous arc reaction, the impurities such as amorphous carbon attached to the previously formed carbon nanotube network product will reduce the purity of the product, so that the prepared carbon nanotubes are not high in purity, and impurities such as amorphous carbon Obviously, the device involved in this utility model cannot solve this problem

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