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A kind of preparation method of carbon nitride nanotube

A nanotube and carbon nitride technology is applied in the field of preparation of nanotubular carbon nitride materials, which can solve the problems of large size and high dependence of carbon nitride nanotubes, achieve uniform size, low cost, and overcome complex preparation procedures. Effect

Active Publication Date: 2017-03-08
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the currently disclosed template method for preparing carbon nitride nanotubes has shortcomings such as large size and large dependence. Therefore, it is of great research value to find a template method that overcomes these shortcomings.

Method used

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  • A kind of preparation method of carbon nitride nanotube
  • A kind of preparation method of carbon nitride nanotube
  • A kind of preparation method of carbon nitride nanotube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 1.1 Make a solution of 50mL ethanol and 5mL water, add 1.5mL ammonia water, stir for 30min to get a uniform solution;

[0043] 1.2 Add 0.4 mL tetraethyl orthosilicate (TEOS) to the above solution and stir for 2 h to obtain the silica nanosphere template product;

[0044] 1.3 Centrifuge, wash and dry the product obtained above, disperse it into 10 mL of water, add 1 μL (3-mercaptopropyl)trimethoxysilane (MPS) and stir for 2 days, then centrifuge and wash to obtain the product;

[0045] 1.4 Take 0.1g of the product solid powder obtained in the above step 1.3, disperse it into 20mL of water, add 1.0g of melamine, stir for 12 hours, centrifuge, wash and dry to obtain a white solid powder, and put the white solid powder under the protection of an inert gas 1. Heating to 550°C at a heating rate of 5°C / min, keeping the temperature for 2 hours to completely decompose the melamine, and then cooling naturally to obtain the carbon nitride-coated silica nanosphere material;

[004...

Embodiment 2

[0049] The preparation method is the same as in Example 1, except that after being immersed in 10% hydrofluoric acid solution, the stirring time is 1h. The resulting product appearance is substantially the same as in Example 1, but there is a small amount of SiO 2 The balls are not etched away. Figure 4 It is a scanning electron microscope photo of the etched sample. It can be seen from the figure that the outer diameter of the carbon nitride nanotube is 67-180 nm, the length is 65 nm-250 nm, and the surface is smooth.

Embodiment 3

[0051] The preparation method is the same as in Example 1, except that the amount of TEOS added is 1 mL. The morphology of the obtained nanotubular graphitic carbon nitride is the same as that of Example 1. Figure 5 It is a scanning electron microscope photo of the sample. It can be seen from the figure that the outer diameter of carbon nitride nanotubes is 80~200nm, the length is 65 nm~1.15μm, and the surface is smooth.

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Abstract

The invention discloses a preparation method of a carbon nitride nanometer tube. The method comprises the steps that a sol-gel method is adopted for obtaining silicon dioxide balls, the silicon dioxide balls are dispersed into water and modified by an MPS, modified SiO2 balls are dispersed into water again, then, melamine is added for wrapping, the wrapped SiO2 balls are calcined, the melamine is completely decomposed to obtain the silicon dioxide balls wrapped by carbon nitride, the silicon dioxide balls wrapped by carbon nitride are etched by an HF, and the silicon dioxide balls are removed to obtain the carbon nitride nanometer tube. The preparation process is simple, the cost is low, the morphology is special, the defects that the preparation procedure is complex and the cost is high are overcome, the obtained nanometer tube is uniform in size and good in dispersity and can be used for preparing templates of other physical forms or loads of nanometer precious metal particles, and the method has the wide prospect in the application field of photocatalytic degradation of organic matter and photocatalysis of hydrogen production, and can be widely used for biological medicine loads and the like.

Description

technical field [0001] The invention relates to a preparation method of a nanotube-shaped carbon nitride material and the obtained carbon nitride nanotube, belonging to the technical field of semiconductor material preparation. Background technique [0002] Carbon nitride is a semiconductor material with a narrow bandgap (2.7eV) and a high carrier recombination rate. Graphite-like carbon nitride has the advantages of stable chemical properties, easy preparation, etc., as well as the characteristics of being organic, non-toxic, and capable of responding in the visible light range, making it a new type of photocatalyst for photocatalytic degradation of organic pollutants and photocatalytic hydrogen production. And other fields have received extensive attention, making it widely used in many fields such as electronics, optics, and biology. [0003] Carbon nitride nanotube is a kind of carbon nitride with special morphology, which has the advantages of smooth surface and unifor...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/076B82Y40/00B82Y30/00
Inventor 杨萍刘雨萌王俊鹏
Owner UNIV OF JINAN
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