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Method for preparing single-walled carbon nanotubes in oriented arrangement with solution standing method

A technology of single-wall carbon nanotubes and directional arrangement, applied in nanotechnology, nanotechnology, nanostructure manipulation, etc., can solve the problems of low concentration of carbon nanotubes, high cost of carbon nanotubes, and lack of orientation, and achieve equipment Low requirements, stable electrical performance, and good orientation

Active Publication Date: 2016-12-14
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is how to overcome the disadvantages of high cost, complicated preparation, low concentration of carbon nanotubes, lack of orientation, and poor electrical properties, etc., to improve the existing carbon nanotube preparation method and simplify the preparation method. Obtain high performance carbon nanotubes

Method used

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  • Method for preparing single-walled carbon nanotubes in oriented arrangement with solution standing method
  • Method for preparing single-walled carbon nanotubes in oriented arrangement with solution standing method
  • Method for preparing single-walled carbon nanotubes in oriented arrangement with solution standing method

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Effect test

Embodiment 1

[0034] Embodiment 1: A kind of method for preparing single-walled carbon nanotubes of oriented arrangement by solution static method, comprises the following steps:

[0035] (1) Take 20 mL of deionized water and put it into a beaker, weigh 15 mg of carbon nanotubes, weigh 100 mg of sodium dodecylbenzenesulfonate and add it to the beaker, put a magnetic rotor in the beaker, put the beaker into a magnetic stirrer, Adjust the temperature to 70°C, the rotational speed to 12rad / s, magnetically stir for 3 hours, and perform ultrasonic mixing at the same time, so that sodium dodecylbenzenesulfonate and carbon nanotubes are uniformly dispersed in deionized water to obtain solution 1;

[0036] (2) Take 150 mg of polyvinylpyrrolidone and add it to solution 1, adjust the temperature to 70°C, rotate at 12 rad / s, stir magnetically for 10 minutes, and perform ultrasonic mixing at the same time to obtain a black colloidal liquid, namely solution 2;

[0037] (3) The wet film was prepared by t...

Embodiment 2

[0040] Embodiment 2: A kind of method for preparing single-walled carbon nanotubes of oriented arrangement by static method of solution, comprises the following steps:

[0041] (1) Take 20 mL of deionized water and put it into a beaker, weigh 15 mg of carbon nanotubes, weigh 75 mg of dodecyltrimethylammonium bromide, and add 75 mg of hexadecyltrimethylammonium bromide into the beaker, and ultrasonically Mix to make dodecyltrimethylammonium bromide, cetyltrimethylammonium bromide and carbon nanotubes uniformly dispersed in deionized water to obtain solution 1;

[0042] (2) Add 150mg of polystyrene sulfonate and 150mg of polyvinyl alcohol into solution 1, and mix them uniformly with ultrasound to obtain a black colloidal liquid, namely solution 2;

[0043] (3) The wet film was prepared by the solution static method, and the substrate with parallel electrodes was placed in the solution 2 at an angle of 2° to prepare a wet film, and it was crystallized after standing for 72 hours;...

Embodiment 3

[0045] Embodiment 3: A kind of method for preparing single-walled carbon nanotubes of oriented arrangement by solution static method, comprises the following steps:

[0046](1) Take 20 mL of deionized water and put it into a beaker, weigh 15 mg of carbon nanotubes, weigh 40 mg of cetyltrimethylammonium bromide, and add 60 mg of sodium dodecylbenzenesulfonate into the beaker. Insert the magnetic rotor, put the beaker into a magnetic stirrer, adjust the temperature to 80°C, and the rotation speed to 12rad / s, and magnetically stir for 5 hours, while ultrasonically mixing, so that sodium dodecylbenzenesulfonate and carbon nanotubes are evenly dispersed in the In deionized water, solution 1 was obtained;

[0047] (2) Take 200 mg of polyvinyl alcohol and add it to solution 1, adjust the temperature to 80 ° C, rotate at 12 rad / s, stir magnetically for 20 minutes, and perform ultrasonic mixing at the same time to obtain a black colloidal liquid, namely solution 2;

[0048] (3) The we...

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Abstract

The invention discloses a method for preparing single-walled carbon nanotubes in oriented arrangement with a solution standing method. A substrate with parallel electrodes on the surface obliquely stands in colloidal liquid obtained by mixing single-walled carbon nanotubes, deionized water, a surfactant and an organic polymer, and due to the size effect of the parallel electrodes on the carbon nanotubes, the carbon nanotubes can be arranged between the parallel electrodes in an oriented mode. Compared with a traditional chemical vapor deposition method for preparing orientated carbon nanotubes in vertical arrangement, operation is easy, and the carbon nanotubes in horizontal oriented arrangement are prepared and can be applied to field-effect tubes, field emitters and chemical sensors.

Description

technical field [0001] The invention relates to a method for preparing a functional thin film, which belongs to the fields of nano-film materials and nano-devices, and in particular relates to a novel method for preparing directional arrangement single-walled carbon nanotubes by a static solution method. Background technique [0002] As a new functional material that has attracted the attention of various countries in recent years, carbon nanotube material has the characteristics of good carrier mobility and current transport ability, good mechanical properties, good optical properties and so on. , Field emitters, semiconductor probes, chemical sensors and other devices have good application prospects. [0003] For many years, single-walled carbon nanotubes have been regarded as new materials that can replace silicon-based TFTs due to their good electrical properties and ultra-thin structure. There are two methods for preparing single-walled carbon nanotube TFTs: chemical v...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82B3/00B82Y40/00
CPCB82B3/0066B82Y40/00C01P2004/03
Inventor 王军周泓希黄泽华孙斌玮吴雪飞姬春晖蒋亚东
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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