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Preparation method of graphite type carbon nitride nanotubes

A graphitic carbon nitride and nanotube technology, applied in nanotechnology, nitrogen and non-metallic compounds, etc., can solve the problems of high production cost, small output, complex process, etc., and achieve low price, reduce specific surface energy, Beneficial for industrial production

Active Publication Date: 2015-05-13
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The present invention aims to solve technical problems such as small output, complex process, high production cost, large amount of organic substances or templating agents that are difficult to completely remove, etc. existing in the synthesis of graphite-type carbon nitride nanotubes, and provides a graphite-type carbon nitride nanotube. The preparation method of carbon nitride nanotubes does not need to use additional organic substances or templates, thereby avoiding the pollution of impurity substances; at the same time, it has the characteristics of simplicity, low cost, etc., and can prepare carbon nitride nanotubes on a large scale; through this The graphite-type carbon nitride nanotubes prepared by the method have excellent fluorescence properties and photocatalytic properties, and can be applied in the fields of nano-devices and photocatalysis

Method used

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  • Preparation method of graphite type carbon nitride nanotubes
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  • Preparation method of graphite type carbon nitride nanotubes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In the first step, a certain amount of melamine powder is added to the ceramic crucible, and the ceramic crucible is placed on a vibrator for vibration treatment, so that the melamine powder is changed from random accumulation to an orderly arrangement of medium close accumulation. The medium close packing form mentioned in the present invention is an intermediate situation between natural disordered packing and compaction by means of external force. Moderately close-packed form.

[0043] In the second step, the ceramic crucible is covered to form a semi-closed environment, and then placed in a muffle furnace controlled by temperature programming, and the temperature is rapidly raised from room temperature to 500 °C at a heating rate of 10 °C / min, and then Keep at this temperature for 2h.

[0044] In the third step, the temperature of the muffle furnace is raised to 520° C. / min at a rate of 2° C. / min, and kept at this temperature for 2 hours for further deamination.

...

Embodiment 2

[0051] In the first step, a certain amount of melamine powder is added to the ceramic ark, and the ceramic ark is placed on a vibrator for vibration treatment, so that the melamine powder is changed from random accumulation to an orderly arrangement of medium and close accumulation.

[0052] In the second step, cover the ceramic ark to form a semi-enclosed environment, and then put it into a muffle furnace controlled by temperature programming, rapidly increase the temperature from room temperature to 490 °C at a heating rate of 5 °C / min, and Keep at this temperature for 3h.

[0053] In the third step, the temperature of the muffle furnace is raised to 550° C. / min at a rate of 3° C. / min, and kept at this temperature for 1 hour for further deamination.

[0054] In the fourth step, after cooling to room temperature, the obtained product is ground in an agate mortar to obtain graphite-type carbon nitride nanotubes.

[0055] By characterizing the graphite-type carbon nitride nano...

Embodiment 3

[0058] In the first step, a certain amount of melamine powder is added to the ceramic crucible, and the ceramic crucible is placed on a vibrator for vibration treatment, so that the melamine powder is changed from a random stacked form to an orderly arranged medium-close packed form.

[0059] In the second step, the ceramic crucible is covered to form a semi-closed environment, and then placed in a muffle furnace controlled by temperature programming, and the temperature is rapidly raised from room temperature to 510 °C at a heating rate of 5 °C / min, and then Keep at this temperature for 1h.

[0060] In the third step, the temperature of the muffle furnace is raised to 530° C. / min at a rate of 1° C. / min, and kept at this temperature for 3 hours for further deamination.

[0061] In the fourth step, after cooling to room temperature, the obtained product is ground in an agate mortar to obtain graphite-type carbon nitride nanotubes.

[0062] By characterizing the graphite-type c...

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Abstract

The invention discloses a preparation method of graphite type carbon nitride nanotubes. The preparation method comprises the following steps: adding melamine powder into a high temperature-resistant container, and placing the high temperature-resistant container on a vibrator for vibration treatment; then adding a cover on the high temperature-resistant container, placing the high temperature-resistant container into a program heating control device, heating to a first preset temperature at a relatively high heating rate and keeping for a period of time; further heating the program heating control device to a second preset temperature at a relatively low heating rate and keeping for a period of time; and cooling an obtained product to room temperature, and then grinding to form powder so as to obtain the graphite type carbon nitride nanotubes disclosed by the invention. In the synthesis process of the preparation method, the addition of a template or additional organic matters is not required, the preparation method has the advantages of low price, high yield, good repeatability, no impurity interference of products and the like, is simple and easy to operate, and the prepared carbon nitride nanotubes have good fluorescence performance and photocatalytic performance, and have broad application prospects in the fields of nano devices, photocatalysis and the like.

Description

technical field [0001] The invention relates to the field of inorganic nanometer materials, in particular to a method for preparing graphite-type carbon nitride nanotubes. Background technique [0002] Today, with the rapid development of science and technology, inorganic nanomaterials such as titanium dioxide, bismuth vanadate, boron nitride, etc. special properties of the substance. [1] [0003] In recent years, graphite-type carbon nitride has received more and more attention. Its hardness can even exceed that of diamond, and it has good thermal stability, chemical stability and unique optical and photoelectric properties. It is used in heterogeneous catalysis, It has been widely used in energy conversion, gas storage and many other fields. [2] Generally speaking, the structure has a great influence on the properties of carbon nitride. Scientists from various countries have successively prepared carbon nitride with various shapes, such as nanosheets, nanoparticles, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B21/082B82Y40/00
Inventor 巩金龙李长江王拓张鹏张冀杰王胜平
Owner TIANJIN UNIV
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