Bamboo joint-like carbon nano-tube preparation method

A carbon nanotube and bamboo-shaped technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of poor environmental friendliness, low content of carbon nanotubes, and high cost, and achieve Wide application prospects, easy mass production, and low cost effects

Inactive Publication Date: 2015-04-22
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problems of high cost, poor environmental friendliness, low content of carbon nanotubes in the product and inconvenient large-scale production in the method for preparing bamboo-shaped carbon nanotubes in the prior art, and provides a bamboo-shaped carbon nanotube Preparation method of carbon nanotube

Method used

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preparation example Construction

[0021] A kind of preparation method of bamboo-shaped carbon nanotube provided by the invention, concrete steps and conditions are as follows:

[0022] 1) Dissolve 0.50-1.00g melamine in ultrapure water;

[0023] 2) Add 5.0-10.0mL of 0.10g / ml surfactant and 5.0-10.0mL of 1.0wt% soluble iron salt in sequence, stir until uniform, and then ultrasonicate for 4-6 hours;

[0024] Described soluble iron salt is ferric nitrate, ferric acetate or ferric chloride;

[0025] Described surfactant is poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (P123) or F127;

[0026] 3) Put the residue obtained in step 2) after drying at 80°C into a quartz boat, program the temperature to 750-900°C under nitrogen protection, and heat-treat for 1-3 hours to obtain bamboo with a diameter of 40-110nm. Nodal carbon nanotubes.

Embodiment 1

[0028] 1) Dissolve 1.00g of melamine in 10mL of ultrapure water;

[0029] 2) Add 5.0mL (0.10g / ml) of poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (P123) and 7.5mL of 1.0wt% ferric nitrate in turn, stir well until uniform, then sonicate for 4 hours;

[0030] 3) The residue after drying the above solution at 80°C was put into a quartz boat, and the temperature was programmed to rise to 750°C under the protection of nitrogen, and heat-treated for 3 hours to obtain bamboo-shaped carbon nanotubes. Depend on figure 1 The transmission electron microscope (TEM) picture of the bamboo-shaped carbon nanotubes can be clearly seen, which is a bamboo-shaped carbon nanotube with a diameter of 40-110nm.

Embodiment 2

[0032] 1) Dissolve 0.50g melamine in 10mL ultrapure water;

[0033] 2) Add 7.5mL (0.10g / ml) poly(ethylene glycol)-block-poly(propylene glycol)-block-poly(ethylene glycol) (P123) and 5.0mL 1.0wt% ferric chloride in sequence, fully Stir until uniform, then sonicate for 5 hours;

[0034] 3) The residue after drying the above solution at 80°C was put into a quartz boat, the temperature was programmed to rise to 800°C under the protection of nitrogen, and heat treated for 1 hour to obtain bamboo-shaped carbon nanotubes.

[0035] figure 2 The TEM images show the existence of continuous clear bamboo-shaped carbon nanotubes, and the diameter of bamboo-shaped carbon nanotubes is 40-110nm. we carry out N 2 Adsorption and desorption experiments to study the specific surface area of ​​the material, image 3 The results show that the specific surface area of ​​the material is 151.2m 2 / g, and due to the stacking between carbon nanotubes, a pore structure is formed, with a pore size o...

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Abstract

The present invention relates to a bamboo joint-like carbon nano-tube preparation method, wherein technical problems of high cost, poor environmental protection, not high carbon nano-tube content in the product, and inconvenient mass production of the existing bamboo joint-like carbon nano-tube preparation method are solved with the method of the present invention. The method of the present invention comprises: dissolving 0.50-1.00 g of melamine in ultrapure water, sequentially adding 5.0-10.0 mL of a 0.10 g / ml surfactant and 5.0-10.0 mL of a 1.0 wt% dissolved iron salt, uniformly stirring, carrying out an ultrasonic treatment for 4-6 h, placing the residue obtained from the solution being subjected to drying at a temperature of 80 DEG C into a quartz boat, heating to a temperature of 750-900 DEG C under nitrogen gas protection, and carrying out a heat treatment for 1-3 h to obtain the bamboo joint-like carbon nano-tubes. According to the present invention, the method has characteristics of simplicity, convenience, low cost, green environmental protection, and easy mass production, and the prepared bamboo joint-like carbon nano-tube has wide application prospects in fields of fuel cells, biological sensing, and the like.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a method for preparing bamboo-shaped carbon nanotubes. Background technique [0002] Since the advent of carbon nanotubes (CNTs), due to their good physical and chemical properties, excellent catalytic activity and other advantages, the research on CNTs is very active. In recent years, with the development of nanomaterial preparation methods, people have been able to prepare CNTs with different shapes, such as bamboo-shaped, herring-bone, and conical. Different from traditional CNTs, bamboo-shaped CNTs are composed of shorter nodular CNTs and contain a large number of well-spaced cross-sections, so their facets have high carbon content and good catalytic activity. [0003] However, there are not many studies on the preparation of bamboo-shaped CNTs, mainly including chemical vapor deposition, arc discharge and pyrolysis of metal-organic precursors. For example,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00
Inventor 杨文秀郏建波
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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