Preparing method for carbon nano tube foam material

A carbon nanotube, foam material technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effects of easy removal, wide material sources, and low cost

Active Publication Date: 2016-01-06
XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Overcome the shortcomings of the current car

Method used

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  • Preparing method for carbon nano tube foam material
  • Preparing method for carbon nano tube foam material
  • Preparing method for carbon nano tube foam material

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0024] Example 1

[0025] a. Select a synthetic polymer foam material, a polyurethane sponge with a size of 20cm×10cm×4cm is completely immersed in 5mM CuCl 2 In the aqueous solution, take out the sponge after fully immersing it for 60 min, and place it in a vacuum oven to completely dry to obtain a sponge loaded with metallic copper ions;

[0026] b. Put the obtained sponge loaded with metal copper ions into a tube furnace, in an inert gas argon gas (the flow rate of argon gas is 240sccm) atmosphere, heat up to 600 ° C, constant temperature for 3h, the polyurethane sponge is alone in argon gas After carbonization, its appearance is as follows image 3 ,Compared figure 2 and image 3 It can be clearly seen that the skeleton structure of the material is hollow after this step;

[0027] c. Then feed acetylene gas with a flow rate of 50sccm as the carbon source gas, and keep the temperature at 600°C for 3 hours. Under this condition, carbon tubes are grown. When the reaction...

Example Embodiment

[0028] Example 2

[0029] a. The pellets with a diameter of 4 cm prepared from natural polymer material bamboo fiber are completely immersed in 10 mM Co(NO 3 ) 2 ·6H 2 In the O aqueous solution, take out the sponge after fully immersing it for 35min, and place it in a vacuum oven to completely dry to obtain a sponge loaded with metallic cobalt ions;

[0030] b. Put the prepared sponge loaded with metal cobalt ions into a tube furnace, and heat it up to 650°C in an inert gas nitrogen (flow rate of 240sccm) atmosphere, and keep the temperature constant for 2h;

[0031] c. Then feed 50sccm of ethylene gas as the carbon source gas, at a temperature of 650°C, at a constant temperature of 1.5h, when the reaction is over, stop the feed of ethylene, and let the system naturally cool to room temperature in an atmosphere of inert gas nitrogen to obtain Carbon nanotube foams grown on bamboo fibers.

Example Embodiment

[0032] Example 3

[0033] a. Take the synthetic polymer foam material, and completely immerse a melamine sponge with a size of 20cm×10cm×4cm in 1mM Ni(NO) 3 ) 2 ·6H 2 In the aqueous solution of O, take out the sponge after fully immersing it under ultrasonic for 40min, and place it in a vacuum oven to completely dry to obtain a sponge loaded with metallic nickel ions;

[0034] b. Put the prepared sponge loaded with nickel ions into a tube furnace, and heat it up to 700°C in an inert gas helium (flow rate of 210sccm) atmosphere for 2h at a constant temperature;

[0035] c. Then feed 40sccm of methane gas as the carbon source gas, and keep the temperature at 700°C for 2 hours. When the reaction is over, stop the feed of methane gas and let the system naturally cool to room temperature in an inert gas helium atmosphere. Image 6 The similar skeleton is a hollow carbon nanotube foam material, and its hydrophobic properties are measured. The carbon nanotube foam material has a c...

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Abstract

The invention provides a preparing method for a carbon nano tube foam material. The method comprises the steps that cheap polymer foam serves as a template, the processes of in-situ formation of a catalyst, partial thermal cracking removing of the polymer template, growth of carbon nanomaterials and the like are synchronously carried out by controlling experiment conditions, and the carbon nano tube foam material efficiently grows, wherein the carbon nano tubes are wound and woven into a mesh structure in the three-dimensional directions of a carbon framework and have distributed pore diameters of multiple dimensions, and the obtained material has the large specific surface area, the controllable porosity, good hydrophobicity, excellent electrical conductivity, a unique hollow frame structure, and application value in the fields of composite materials, sensing, oil and water separation and the like. According to the method, reaction conditions such as gas flow, gas introducing time, the reaction temperature and the catalyst are optimized, and thus the carbon nano tube foam material of a foam structure is obtained and has excellent adsorption performance on various kinds of oil and organic solvent. The defect of an existing carbon nano tube foam material preparing method is overcome.

Description

technical field [0001] The invention belongs to the technical field of preparing nanocomposite materials, and in particular relates to a method for preparing a three-dimensional carbon nanotube foam material with good electrical conductivity and adsorption performance. Background technique [0002] Carbon nanotubes (CNTs) are one-dimensional nanomaterials with a unique tubular structure. Compared with traditional carbon materials, carbon nanotubes (CNTs) have excellent mechanical, electrical, and thermal properties, so they have attracted the interest and attention of many scientific researchers since their discovery. However, in practical applications, the high aspect ratio of carbon nanotubes (CNTs) makes it difficult to disperse and easily agglomerates. Using the huge specific surface area of ​​nanomaterials to construct materials with foam structure provides a new method for the dispersion of carbon nanotubes (CNTs). For example, Chinese patent CN103253648A discloses a...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82Y30/00
Inventor 马鹏程崔林芳
Owner XINJIANG TECHN INST OF PHYSICS & CHEM CHINESE ACAD OF SCI
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