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Method for preparing carbon nano tube

A technology of carbon nanotubes and substrates, which is applied in the field of preparation of open carbon nanotubes, can solve the problems of carbon nanotube structure damage and the inability to ensure uniform length of carbon nanotubes, etc.

Active Publication Date: 2007-03-28
TSINGHUA UNIV +1
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Problems solved by technology

[0008] However, the openings in the above-mentioned fluidized bed catalytic cracking method are formed by the collision between the catalyst particles so that the broken carbon nanotubes are easily broken. Although it is easy to do, it cannot ensure the uniform length of the carbon nanotubes, and the carbon nanotubes The structure of the pipe itself will also cause damage

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  • Method for preparing carbon nano tube
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Embodiment Construction

[0018] The embodiments of the preparation method of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] Please refer to Fig. 1, a kind of carbon nanotube preparation device 10 used in the carbon nanotube preparation method that the embodiment of the present invention provides, it comprises: a heating device 16; A reaction furnace 20; A quartz boat 30, it is arranged on reaction In the furnace 20; a gas guiding device, one end of which is connected to the quartz boat 30; a substrate 40, which is arranged in the quartz boat 30, and a catalyst layer 50 is formed on the surface of the substrate 40.

[0020] The reaction furnace 20 includes an air inlet 22 and a gas outlet 24 opposite thereto, wherein the air inlet 22 is used to feed the reaction gas 12, for example, the carbon nanotube growth stage and the growth stage can pass through the gas outlet respectively. The gas port 22 feeds the carrier gas and the carb...

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Abstract

The invention relates to a carbon nanotube preparing method, comprising the steps of: placing a substrate deposited with a catalyst layer on the surface in a quartz boat, which has an opening; placing the quartz boat in a reaction furnace, which comprises a gas inlet, and making the opening of the quartz boat is opposite to the gas inlet; heating the reaction furnace to a preset temperature and charging carbon source gases to grow carbon nanotube on the substrate; when the growth ends, leading carrier gas through a gas guider into the quartz boat to reduce the carbon source gas concentration so as to stop growing carbon nanotube and prevent forming common coating structures; separating carbon nanotube from the catalyst layer by the action of external force and obtaining the carbon nanotube or its array.

Description

【Technical field】 [0001] The invention relates to a preparation method of carbon nanotubes, in particular to a preparation method of open carbon nanotubes. 【Background technique】 [0002] Carbon nanotubes are a new type of one-dimensional nanomaterials discovered in the early 1990s. The special structure of carbon nanotubes determines its special properties, such as high tensile strength and high thermal stability; with the change of the helical mode of carbon nanotubes, carbon nanotubes can exhibit metallic or semiconducting properties. Because carbon nanotubes have an ideal one-dimensional structure and excellent properties in the fields of mechanics, electricity, and heat, they have shown broad application prospects in interdisciplinary fields such as material science, chemistry, and physics, including field emission flat panel displays, Single electron devices, Atomic Force Microscope (AFM) tips, thermal sensors, optical sensors, filters, etc. Therefore, realizing the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
CPCB01J37/0215B82Y40/00C01B31/0233B82Y30/00B01J23/74C01B32/162Y10T156/1089
Inventor 刘锴姜开利范守善
Owner TSINGHUA UNIV
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