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Treating agent for carbon nano tube and preparation method of water-soluble carbon nano tube

A technology of carbon nanotubes and treatment agents, which is applied in the field of nanomaterials, can solve problems such as partial structural damage of single-walled carbon nanotubes, and achieve the effects of easy operation, simple method, easy operation and implementation

Active Publication Date: 2013-07-03
JIANGSU SUMEILUN INTELLIGENT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Zheyi Chen et al. (J Am Chen Soc, 2006, 128(32): 10568-10571) soaked single-walled carbon nanotubes with oleum and stirred with concentrated nitric acid. The treated single-walled carbon nanotubes were soluble in polar Non-toxic organic solvents, acid solutions and water, but due to the addition of high-concentration strong acid for immersion, part of the structure of single-walled carbon nanotubes is destroyed

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 1) According to parts by weight, configure 15 parts of 60wt% sulfuric acid, 10 parts of 70wt% nitric acid, and 0.5 parts of 52wt% phosphoric acid;

[0028] 2) Add 0.05 part of dispersant (0.03 part of sodium heptylbenzene sulfonate, 0.02 part of sodium dodecyl sulfate) and 0.1 part of foaming agent (0.05 part of n-heptane, 0.05 part of petroleum ether) into nitric acid to prepare into a nitric acid mixture, then add 0.1 part of carbon nanotubes into the nitric acid mixture, then add the above sulfuric acid, then add the above phosphoric acid, and heat in an oil bath at 130°C for 50 minutes;

[0029] 3) Cool the solution naturally, dilute the mixed solution to 3-4 times the original volume, filter it with a polytetrafluoroethylene filter membrane with a pore size of 0.22 microns, wash it with deionized water for 4-5 times, and then use an electric blast dryer Dry at 75°C to obtain water-soluble carbon nanotubes. After testing, the solution of carbon nanotubes is uniform....

Embodiment 2

[0031] 1) According to parts by weight, configure 30 parts of 40wt% sulfuric acid, 5 parts of 60wt% nitric acid, and 1 part of 54wt% phosphoric acid;

[0032] 2) Mix 0.1 part of dispersant (0.05 part of cetyltrimethylammonium bromide, 0.02 part of butylbenzenesulfonate amine, 0.03 part of magnesium toluenesulfonate) and 0.05 part Alkanes, 0.02 parts of petroleum ether, 0.02 parts of ethanol) were added to nitric acid to make a nitric acid mixture, then 0.1 parts of carbon nanotubes were added to the nitric acid mixture, then the above sulfuric acid was added, and then the above phosphoric acid was added. Heat in the pot for 30 minutes;

[0033] 3) Cool the solution naturally, dilute the mixed solution to 3-4 times the original volume, filter it with a polytetrafluoroethylene filter membrane with a pore size of 0.22 microns, wash it with deionized water for 4-5 times, and then use an electric blast dryer Dry at 75°C to obtain water-soluble carbon nanotubes. After testing, the ...

Embodiment 3

[0035] 1) According to parts by weight, configure 25 parts of 50wt% sulfuric acid, 8 parts of 60wt% nitric acid, and 0.8 parts of 53wt% phosphoric acid;

[0036] 2) Mix 0.07 parts of dispersant (0.02 parts of magnesium toluenesulfonate, 0.04 parts of sodium silicate, 0.01 parts of sodium dodecylbenzenesulfonate) and 0.07 parts of foaming agent (0.05 parts of ethanol, 0.02 parts of glycerol ) into nitric acid to form a nitric acid mixture, then add 0.1 part of carbon nanotubes into the nitric acid mixture, then add the above sulfuric acid, then add the above phosphoric acid, and heat in an oil bath at 140°C for 40 minutes;

[0037] 3) Cool the solution naturally, dilute the mixed solution to 3-4 times the original volume, filter it with a polytetrafluoroethylene filter membrane with a pore size of 0.22 microns, wash it with deionized water for 4-5 times, and then use an electric blast dryer Dry at 75°C to obtain water-soluble carbon nanotubes. After testing, the solution of car...

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PUM

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Abstract

The invention provides a treating agent for a carbon nano tube and a preparation method of a water-soluble carbon nano tube. The water-soluble carbon nano tube treated through the treating agent, provided by the invention, can be dissolved in aqueous solutions such as water and various nutrient solutions. The treating agent for the water-soluble carbon nano tube mainly comprises the following components in parts by weight: 15-30 parts of 40-60% sulfuric acid, 5-10 parts of 50-70 % nitric acid, 0.5-1 part of 52-54% phosphate, 0.05-0.1 part of dispersant, and 0.05-0.1 part of foaming agent. After the carbon nano tube treated through the treating agent provided by the invention is dissolved in an aqueous solution, particles are completely melted, and an effect of uniformity and no precipitation is achieved, and the preparation method is simple and easy to operate.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a carbon nanotube treatment agent and a preparation method of the water-soluble carbon nanotube. Background technique [0002] Professor Iijima, a Japanese scientist, discovered a new type of nanomaterial, carbon nanotubes, in 1991. Carbon nanotubes have the excellent characteristics of graphite, such as heat resistance, corrosion resistance, good heat transfer, good electrical conductivity and good biocompatibility. Due to the various superior properties of carbon nanotubes, it has a wide range of applications, but due to the large molecular weight of carbon nanotubes and the strong inter-tube van der Waals attraction between carbon nanotubes, carbon nanotubes are insoluble in water, thus This limits its application in various fields. [0003] Therefore, the surface modification of carbon nanotubes has become a research hotspot, and the water solubility of carbon nanotubes h...

Claims

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Application Information

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IPC IPC(8): C01B31/00C01B32/174
Inventor 许志陈建军任瑞珍赵杰
Owner JIANGSU SUMEILUN INTELLIGENT TECH
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