Enrichment method of semiconductor type carbon nanotubes
A technology of carbon nanotubes and single-walled carbon nanotubes, which is applied in the direction of carbon nanotubes, nanocarbons, chemical instruments and methods, etc., can solve problems such as difficult separation operations, inhibition of practicability, and unsuitability for mass production, and achieve separation Good effect, maintaining intrinsic characteristics, and improving separation efficiency
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Embodiment 1
[0036] A method for enriching semiconducting carbon nanotubes, specifically comprising the steps of:
[0037] (1) Dissolve 10 mg of solid oxidizing compound in 100 ml of liquid reagent, and control the concentration of solid oxidizing compound to 0.1 mg / ml to obtain a solid oxidizing compound solution with a concentration of 0.1 mg / ml;
[0038] The solid oxidizing compound is tetrafluoroborate nitric acid;
[0039] Described liquid reagent is trichloromethane;
[0040] (2) Ultrasonic disperse 10 mg of single-walled carbon nanotubes into 100 ml of the solid oxidizing compound solution obtained above, and ultrasonically disperse for 5 minutes to obtain a uniform dispersion of carbon nanotubes with a concentration of 0.1 mg / ml;
[0041] (3) Place the uniform dispersion of carbon nanotubes obtained above into a microwave reactor, control the temperature at 40°C, and conduct a microwave reaction for 120 minutes to obtain a reaction solution;
[0042] (4) Vacuum filter the reactio...
Embodiment 2
[0047] (1) Dissolve 10 mg of solid oxidizing compound in 100 ml of liquid reagent, and control the concentration of solid oxidizing compound to 0.1 mg / ml to obtain a solid oxidizing compound solution with a concentration of 0.1 mg / ml;
[0048] The solid oxidizing compound is nitrous tetrafluoroborate;
[0049] The liquid reagent is deionized water;
[0050] (2) Ultrasonic disperse 10 mg of single-walled carbon nanotubes into 100 ml of the solid oxidizing compound solution obtained above, and ultrasonically disperse for 10 minutes to obtain a uniform dispersion of carbon nanotubes with a concentration of 0.1 mg / ml;
[0051] (3) Place the uniform dispersion of carbon nanotubes obtained above into a microwave reactor, control the temperature at 90°C, and perform a microwave reaction for 100 minutes to obtain a reaction solution;
[0052] (4) Vacuum filter the reaction solution obtained above, wash the filter cake with deionized water until the pH value of the filtrate is neutral...
Embodiment 3
[0055] (1) Dissolve 20 mg of solid oxidizing compound in 80 ml of liquid reagent, and control the concentration of solid oxidizing compound to 0.25 mg / ml to obtain a solid oxidizing compound solution with a concentration of 0.25 mg / ml;
[0056] The solid oxidizing compound is diazonium fluoroborate;
[0057] The liquid reagent is dimethylformamide;
[0058] (2) Ultrasonic disperse 50 mg of single-walled carbon nanotubes into 100 ml of the solid oxidizing compound solution obtained above, and ultrasonically disperse for 10 minutes to obtain a uniform dispersion of carbon nanotubes with a concentration of 0.5 mg / ml;
[0059] (3) Place the uniform dispersion of carbon nanotubes obtained above into a micro-blog reactor, control the temperature at 150°C, and perform a microwave reaction for 25 minutes to obtain a reaction liquid;
[0060] (4) Vacuum filter the reaction solution obtained above, wash the filter cake with deionized water until the pH value of the filtrate is neutral,...
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