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Photochemical carbon nanotube modifying process

A technology of carbon nanotubes and photochemistry, applied in the field of nanometers, can solve problems such as limited applications, and achieve the effects of convenient reaction, simple and practical method, and high efficiency

Inactive Publication Date: 2009-05-27
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these photochemical methods require special functional compounds, which limits their application

Method used

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  • Photochemical carbon nanotube modifying process
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Experimental program
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Effect test

Embodiment 1

[0022] Take 5 mg of single-walled carbon nanotubes, 2.5 grams of benzophenone, and 2.527 grams of benzphenyl alcohol, add 20 ml of benzene and mix to form a mixed solution. After the benzophenone and benzphenyl alcohol are dissolved, put the mixed solution in an ultrasonic Ultrasound for 5 minutes, then irradiated with ultraviolet light, reacted for 2 hours, and kept stirring at the same time, collected the reaction product, washed twice with tetrahydrofuran, and dried the remaining product under vacuum for 3 hours after washing to obtain a functionalized carbon nanometer. Tube. Reanalysis found that the functional groups grafted onto the surface of carbon nanotubes accounted for 42% of the total weight. Raman spectrum, ultraviolet spectrum and infrared spectrum show that the benzhydryl alcohol functional group modified on the wall of carbon nanotube is connected with carbon nanotube by covalent bond.

Embodiment 2

[0024] Take 5 mg of single-walled carbon nanotubes, 2.5 grams of benzophenone, and 2.527 grams of benzphenyl alcohol, add 20 ml of benzene and mix to form a mixed solution. After the benzophenone and benzphenyl alcohol are dissolved, put the mixed solution in an ultrasonic Ultrasound for 10 minutes, then irradiated with ultraviolet light, reacted for 2 hours, and kept stirring at the same time, collected the reaction product, washed twice with tetrahydrofuran, and dried the remaining product under vacuum for 3 hours after washing to obtain a functionalized carbon nanometer. Tube. Thermogravimetric analysis found that the functional groups grafted onto the surface of carbon nanotubes accounted for 50% of the total weight. Raman spectrum, ultraviolet spectrum and infrared spectrum show that the benzhydryl alcohol functional group modified on the wall of carbon nanotube is connected with carbon nanotube by covalent bond.

Embodiment 3

[0026] Take 5 mg of single-walled carbon nanotubes, 2.5 grams of benzophenone, and 2.527 grams of benzphenyl alcohol, add 20 ml of benzene and mix to form a mixed solution. After the benzophenone and benzphenyl alcohol are dissolved, put the mixed solution in an ultrasonic Ultrasound for 120 minutes, then irradiated with ultraviolet light, reacted for 2 hours, and kept stirring at the same time, collected the reaction product, washed twice with tetrahydrofuran, and dried the remaining product under vacuum for 3 hours after washing to obtain functionalized carbon nanotubes . Thermogravimetric analysis found that the functional groups grafted onto the surface of carbon nanotubes accounted for 33% of the total weight. Raman spectrum, ultraviolet spectrum and infrared spectrum show that the benzhydryl alcohol functional group modified on the wall of carbon nanotube is connected with carbon nanotube by covalent bond.

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Abstract

The present invention discloses a kind of photochemical carbon nanotube modifying process, and belongs to the field of nanometer technology. The process includes the following steps: mixing carbon nanotube, benzophenone and diphenyl carbinol in organic solvent to form mixed solution; ultrasonic treatment of the mixed solution; irradiating the mixed solution with ultrasonic ray while stirring to react; washing the product with organic solvent; and drying to obtain the functional carbon nanotube. The process is simple and effective, and the obtained functional carbon nanotube may be well dispersed in organic solvent for reaction with other compound and for preparing nanometer composite material.

Description

technical field [0001] The invention relates to a method in the field of nanotechnology, in particular to a method for photochemically modifying carbon nanotubes. Background technique [0002] Carbon nanotubes have attracted great interest since their discovery due to their unique physical and chemical properties. In order to overcome the strong van der Waals interaction between carbon nanotubes, improve the dispersion performance of carbon nanotubes in solvents, or enhance the interaction between them and other materials, modifying the surface of carbon nanotubes is a very important means. [0003] Find through literature retrieval to prior art, at present there are two kinds of methods that photochemically modify carbon nanotubes: Micheal Holzinger et al. in "Angewandte Chemie International Edition" ("Germany Applied Chemistry", 2001, 40th period, No. 4002- 4005 pages) published a paper entitled "Sidewall functionalization of carbon nanotubes" ("The functionalization of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B31/02B82B3/00
Inventor 魏良明张亚非
Owner SHANGHAI JIAOTONG UNIV