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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

AI Technical Summary

Problems solved by technology

Overcome the shortcomings of the current carbon nanotube foam material preparation method

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

Embodiment 1

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

[0026] b. The obtained sponge loaded with metal copper ions is placed in a tube furnace, and in an atmosphere of inert gas argon (the flow rate of argon is 240 sccm), the temperature is raised to 600° C., and the temperature is maintained for 3 hours. The polyurethane sponge is alone in argon. After carbonization, its appearance is as 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 50 sccm as the carbon source gas, and keep the temperature at 600°C for 3 hours to grow carbon tubes. When the reaction temper...

Embodiment 2

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

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

[0031] c. Then feed 50 sccm of ethylene gas as the carbon source gas, and keep the temperature constant for 1.5 hours at 650°C. After the reaction is over, stop the feeding of ethylene, and let the system naturally cool down to room temperature in an atmosphere of inert gas nitrogen to obtain Growth on carbon nanotube foam based on bamboo fibers.

Embodiment 3

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

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

[0035] c. Then feed 40 sccm of methane gas as the carbon source gas, keep the temperature at 700° C. for 2 hours, stop the feeding of methane gas after the reaction is over, and allow the system to cool naturally to room temperature in an inert gas helium atmosphere, and obtain the same as Figure 6 A similar framework is a hollow carbon nanotube foam material, and its hydrophobic performance has been measured. The...

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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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