Preparation method for self-assembly carbonitride nanotube and nanotube prepared by using same

A technology of carbon nitride and self-assembly, applied in the direction of nanotechnology, nitrogen and non-metallic compounds, etc., can solve the problems of binary compound nanotube synthesis limitations, few nanotube synthesis methods, and high difficulty, achieving great application potential, The effect of increased conductivity and mild preparation conditions

Active Publication Date: 2012-08-01
KUSN INNOVATION INST OF NANJING UNIV
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Problems solved by technology

[0003] However, although there are many synthesis methods of carbon nanotubes and the technology is very mature, there are few synthesis methods

Method used

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  • Preparation method for self-assembly carbonitride nanotube and nanotube prepared by using same
  • Preparation method for self-assembly carbonitride nanotube and nanotube prepared by using same
  • Preparation method for self-assembly carbonitride nanotube and nanotube prepared by using same

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Embodiment 1

[0026] (1) Melamine is dissolved in ethylene glycol to obtain a saturated solution;

[0027] (2) Slowly add 0.12 mol / L nitric acid solution into the above-mentioned saturated solution and stir slowly until a large amount of precipitation occurs; the volume ratio of adding nitric acid solution and ethylene glycol solution is 3:1.

[0028] (3) Centrifuge the reaction product to obtain solid powder, then wash with distilled ethanol, and then dry at 60° C. for 5 hours to obtain the self-assembled carbon nitride nanotube precursor; the drying time can be 4 or 6 hours.

[0029] (4) The obtained self-assembled carbon nitride nanotube precursor is placed in a muffle furnace and calcined at a temperature of 350° C. for 1 hour to obtain the self-assembled carbon nitride nanotube.

[0030] The products are analyzed by X-ray line diffraction (XRD), thermogravimetry (TG), differential thermal analysis (DSC), fluorescence spectroscopy, scanning electron microscopy, transmission electron mic...

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Abstract

The invention relates to a preparation method for a self-assembly carbonitride nanotube. The preparation method comprises the following steps: adding melamine into glycol to form a saturated solution: slowly adding an aqueous solution of nitric acid with a concentration of 0.12 +/- 0.02 mol/L into the saturated solution until a great amount of white precipitate is generated, centrifugating the white precipitate, rinsing the white precipitate with ethanol and drying the white precipitate at a temperature of 60 +/- 10 DEG C so as to obtain white powder; and calcining the obtained white powder in a muffle furnace at a temperature of 350 +/- 10 DEG C for more than 0.6 h so as to obtain the self-assembly carbonitride nanotube. The preparation method provided in the invention has the advantages of mild preparation conditions, low sintering temperature, a simple process and energy conservation; the nanotube synthesized by using the preparation method has excellent photo-conductive performance, emission wavelength of fluorescence of the nanotube can generate wavelength red shift as sintering time prolongs, and the nanotube can generate fluorescence of a variety of colors after doped by rare earth metal ions.

Description

technical field [0001] The invention relates to a method for preparing self-assembled carbon nitride nanotubes and the nanotubes prepared by the method, belonging to the field of new materials. Background technique [0002] Nanotubes with a diameter of 2-3 μm or less, due to the refinement of the diameter, the surface electronic structure and crystal structure change, resulting in magical quantum effects and surface effects, thus having a series of strange physical and chemical properties. nature, thus becoming a new basic and technical research hotspot. [0003] However, although there are many synthesis methods of carbon nanotubes and the technology is very mature, there are few synthesis methods of carbon nanotubes. The synthesis of binary compound nanotubes is limited due to the difficulty in controlling the bicomponent growth at the atomic level. [0004] Carbonitrides have attracted much attention in the fields of catalysis and superhard materials. The diversity of ...

Claims

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Application Information

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IPC IPC(8): C01B21/082B82Y40/00
Inventor 周勇高军邹志刚
Owner KUSN INNOVATION INST OF NANJING UNIV
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