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Method for preparing fluorine-doped helical carbon nanotube

A technology of doping carbon nanotubes and fluorine, which is applied in the direction of nanotechnology, nanotechnology, chemical instruments and methods, etc., to achieve the effects of low production cost, easy processing, and wide source of raw materials

Active Publication Date: 2015-04-22
GUILIN UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, helical carbon nanotube materials with photoluminescence characteristics in the deeper ultraviolet region (light emission wavelength less than 300 nm), and further have deep ultraviolet emission characteristics less than 300 nm, have not been reported yet.

Method used

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  • Method for preparing fluorine-doped helical carbon nanotube
  • Method for preparing fluorine-doped helical carbon nanotube
  • Method for preparing fluorine-doped helical carbon nanotube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Add 0.01mol nickel nitrate hexahydrate and 0.03mol citric acid monohydrate into a Erlenmeyer flask filled with 100ml of absolute ethanol, heat it in a water bath to 60°C and stir, keep it for 8 hours, then transfer it to a beaker, and put it in a beaker at 85°C After basic drying, it was completely dried at 175° C., and finally put into a muffle furnace for calcination at 375° C. for 4 hours to obtain nickel oxide nanoparticles.

[0020] (2) Weigh 0.025 grams of nickel oxide nanoparticles prepared in step (1) and put them into a tube furnace with a pipe diameter of 50 mm in a porcelain boat, heat to 365 ° C and keep for 1 hour, then turn off the hydrogen and pass through acetylene (flow rate of 40ml / min) to heat to 550 ° C and keep it for 1 hour, finally turn off the acetylene and pass through argon, and drop to room temperature under the protection of argon to prepare spiral carbon nanotubes.

[0021] (3) The helical carbon nanotubes prepared in step (2) are weigh...

Embodiment 2

[0023] Change the mixing mass ratio of helical carbon nanotubes and xenon difluoride in step (3) of Example 1 to 1:7, and other conditions are completely the same as in Example 1 to obtain fluorine-doped helical carbon nanotubes F-HCNT -2.

Embodiment 3

[0025] Change the mixing mass ratio of helical carbon nanotubes and xenon difluoride in step (3) of Example 1 to 1:5, and other conditions are completely the same as in Example 1 to obtain fluorine-doped helical carbon nanotubes F-HCNT -3.

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Abstract

The invention discloses a method for preparing a fluorine-doped helical carbon nanotube. The method comprises the following steps: at first, preparing oxide nanoparticles of nickel by utilizing the sol-gel method reduce the oxide nanoparticles of nickel with hydrogen into nickel nanoparticles to serve as a catalyst to realize high-temperature pyrolysis of acetylene and reacting the product with xenon difluoride to obtain a fluorinated helical carbon nanotube. The raw materials of the sol-gel method include nickel nitrate hexahydrate and citric acid monohydrate, and a solvent is anhydrous ethanol. According to the invention, the photoluminescence of the fluorine-doped helical carbon nanotube is increased to 263 nm and 291 nm deep UV regions, so that the shortcomings of a conventional semi-conductor material in the region are greatly avoided, and the fluorine-doped helical carbon nanotube can serve as base materials of ultraviolet fluorescence and ultraviolet detectors and is used in the fields of photoetching technique, optical information storage and pharmaceutical analysis.

Description

technical field [0001] The invention belongs to the technical field of carbon nanotube preparation, and particularly relates to a method for preparing a fluorine-doped helical carbon nanotube with deep ultraviolet photoluminescence characteristics. The application of storage and drug analysis can also be used as the basic material of ultraviolet luminescence and ultraviolet detection devices. Background technique [0002] Since the discovery of helical carbon nanotubes (HCNTs) in 1994, researchers have attracted great attention for their excellent physical and chemical properties and broad application prospects. It is a spring-like spiral carbon nanotube formed by periodically inserting pairs of five-membered rings and seven-membered rings into the six-membered ring network of straight carbon nanotubes. Its unique helical structure determines that it has unique properties in optics, electricity, magnetism, microwave absorption, mechanics and chemistry, and has great theoret...

Claims

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Application Information

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IPC IPC(8): C01B31/02C09K11/65B82Y30/00
Inventor 纪来奎曹雪丽文剑锋唐涛
Owner GUILIN UNIVERSITY OF TECHNOLOGY
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