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Production method of nano-carbon tube

A technology of carbon nanotubes and a growth method, which is applied in the field of carbon nanotube growth, can solve problems such as inability to grow fine-structure carbon nanotubes, cumbersome manufacturing process, and large catalyst layer particles, and achieve shortened total reaction time, increased solubility, and improved manufacturing process. simplified effect

Inactive Publication Date: 2007-05-16
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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Problems solved by technology

In this traditional method, first, the catalyst is deposited as a continuous solution layer, which cannot obtain the particle distribution required for growing carbon nanotubes, so it must be preheated to form particles, and the obtained The particles in the catalyst layer are too large to grow carbon nanotubes with a fine structure; secondly, this method must use two heating processes: one is to preheat the catalyst layer to form catalyst particles, and the other is to heat and crack hydrocarbons, which is cumbersome. And it takes a certain amount of time to change the catalyst layer into catalyst particles, resulting in a longer overall reaction time

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  • Production method of nano-carbon tube

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Embodiment Construction

[0015] The growth method of described carbon nanotubes comprises the steps:

[0016] The first step is to provide a substrate 10, as shown in Figure 1, which can be glass, silicon wafer or quartz wafer, etc.;

[0017] The second step is to prepare a nano-catalyst solution with a certain viscosity.

[0018] The catalyst of this embodiment can be nano-scale metal iron, cobalt, nickel, or alloys of metal iron, cobalt or nickel, or oxides of metal iron, cobalt or nickel, and the nano-catalyst is prepared in a solution to facilitate the subsequent formation of a catalyst layer.

[0019] Give an example below to illustrate the preparation method of the nano-catalyst solution with a certain viscosity:

[0020] 8.6 g FeCl 2 Tetrahydrate with 23.5 g FeCl 3 The hexahydrate was dissolved in distilled water. Then add 20-50 milliliters of ammonia water, heat the aqueous solution to 80°C under vigorous stirring, and obtain magnetite (Fe 3 o 4 ) nanoparticles precipitate.

[0021] A ...

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Abstract

The invention discloses a growing method of nanometer carbon pipe, which comprises the following steps: providing base; preparing nanometer catalyst solution with certain viscosity; dripping nanometer catalyst solution on the base surface through injecting device of micrometer-grade injecting needle array; forming catalyst layer; growing nanometer carbon pipe on the base surface; making catalyst drip as micrometer grade.

Description

【Technical field】 [0001] The invention relates to a growth method of carbon nanotubes, in particular to a growth method of carbon nanotubes with simple manufacturing process, short reaction time and capable of growing fine-structured carbon nanotubes. 【Background technique】 [0002] Carbon nanotubes are a kind of tubular graphite, which was discovered by Japanese researcher Iijima in 1991, please refer to "Helical Microtubules of Graphic Carbon", S Iijima, Nature, Vol.354, P.56 (1991). Due to its excellent electrical conductivity and unidirectional thermal conductivity, it is widely used in various fields such as field emission, hydrogen storage, and light sensing elements. [0003] At present, methods for preparing carbon nanotubes include Arc Discharge, Laser ablation, Chemical Vapor Deposition (CVD), and Pyrolysis. Among them, the CVD method is obviously superior to other preparation methods in terms of selective control of carbon nanotube growth pattern, vertical alignm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02
Inventor 林孟东
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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