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Single-walled carbon nanotube as well as preparation method and application thereof

A technology of single-walled carbon nanotubes and carbon sources, applied in the direction of single-walled carbon nanotubes, carbon nanotubes, nanocarbons, etc., can solve the problems of low purity and uncontrollable shape of single-walled carbon nanotubes

Active Publication Date: 2018-05-04
QUJING FAYMO TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a single-walled carbon nanotube and its preparation method, aiming to solve the problems of low purity and uncontrollable morphology of the single-walled carbon nanotube in the existing single-walled carbon nanotube preparation method

Method used

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  • Single-walled carbon nanotube as well as preparation method and application thereof

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[0029] combine figure 1 , the embodiment of the present invention provides a method for preparing single-walled carbon nanotubes, comprising the following steps:

[0030] Step 1. provide the reaction device that is used to prepare single-walled carbon nanotube, described reaction device comprises the reaction chamber that generates single-walled carbon nanotube, and is used to provide the carbon source supply chamber of carbon source, described reaction chamber is divided into The upper and lower chambers are respectively a reaction chamber and a liquid carbon storage chamber, wherein the liquid carbon source chamber is connected to the carbon source replenishment chamber through a controllable switch; the reaction chamber includes a The rotating shaft provided on the top wall, the rotating shaft is fixedly connected to the base at one end away from the top wall, the inner wall of the reaction chamber is provided with a heating device, and the reaction chamber is provided with...

Embodiment 1

[0062] A method for preparing single-walled carbon nanotubes, comprising the steps of:

[0063] Step 1. Provide as figure 1 The shown reaction device for preparing single-walled carbon nanotubes is vacuumized and inert gas is introduced;

[0064] Step 2. depositing P-doped nickel oxide on the substrate, and injecting ethanol into the liquid carbon storage chamber;

[0065] Step 3. Rotate the shaft at a speed of 15 r / min, and heat at a heating rate of 5° C. / min to evaporate the liquid carbon in the liquid carbon storage chamber;

[0066] Step 4. Continue heating to 700-1000° C. at a heating rate of 20° C. / min, and inject hydrogen to prepare single-walled carbon nanotubes.

Embodiment 2

[0068] A method for preparing single-walled carbon nanotubes, comprising the steps of:

[0069] Step 1. Provide as figure 1 The shown reaction device for preparing single-walled carbon nanotubes is vacuumized and inert gas is introduced;

[0070] Step 2. deposit S-doped Fe, Sn metal oxides on the substrate, and inject citric acid into the liquid carbon storage chamber;

[0071] Step 3. Rotate the rotating shaft at a speed of 25r / min, heat at a heating rate of 8°C / min to evaporate the liquid carbon in the liquid carbon storage chamber;

[0072] Step 4. Continue heating to 700-1000° C. at a heating rate of 25° C. / min, and introduce reducing gas to prepare single-walled carbon nanotubes.

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Abstract

The invention provides a preparation method of a single-walled carbon nanotube. The preparation method comprises the following steps: providing a reaction device for preparing the single-walled carbonnanotube, wherein the reaction device comprises a reaction cavity body and a carbon source supply source, the reaction cavity body is used for generating the single-walled carbon nanotube, the carbonsource supply source is used for supplying a carbon source, the reaction cavity body is divided into upper and lower chambers, namely a reaction chamber and a liquid carbon storage chamber, the reaction chamber comprises a rotating shaft, the rotating shaft is introduced into the reaction chamber from the top wall and is arranged vertical to the top wall, a substrate is fixedly connected to one end, far from the top wall, of the rotating shaft, a heating device is arranged on the inner wall of the reaction device, and a vent hole is formed in the reaction cavity body; depositing a metal catalyst precursor containing doping elements on the substrate, injecting liquid carbon into the liquid carbon storage chamber in an inert atmosphere, wherein the doping elements are non-metallic elements;heating so as to evaporate liquid carbon in the liquid carbon storage chamber; and continuing to heat to 700-1000 DEG C, introducing reducing gas, and reacting, so as to prepare the single-walled carbon nanotube.

Description

technical field [0001] The invention belongs to the technical field of carbon nanotubes, in particular to a single-walled carbon nanotube and its preparation method and application. Background technique [0002] Carbon nanotubes can be classified into single-walled carbon nanotubes (SWNTs), double-walled carbon nanotubes (DWNTs), and multi-walled carbon nanotubes (MWNTs) according to the number of layers of carbon atoms forming a tube wall. Among them, single-walled carbon nanotubes can be regarded as seamless hollow tubes formed by curling a single-layer graphite layer around a central axis at a certain helical angle. Single-walled carbon nanotubes are composed of graphite layers rolled into cylinders and have extremely high aspect ratios, and are typical one-dimensional nanomaterials. Due to the one-dimensional tubular molecular structure of single-walled carbon nanotubes (small differences in the arrangement of atomic structures will lead to huge differences in the photo...

Claims

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Application Information

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IPC IPC(8): C01B32/159H01M4/587H01M10/0525
CPCC01B2202/02H01M4/587H01M10/0525Y02E60/10
Inventor 孔令涌尚伟丽李洁凤
Owner QUJING FAYMO TECH CO LTD
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