Oxazinyl carbon-nitrogen polymer, and preparation method and application thereof

A technology of azine-based carbon nitrogen and heptazine-based carbon nitrogen, which is applied in the field of azine-based carbon nitrogen polymers and its preparation, can solve the problems of simple and unreported related reports, achieve the improvement of conduction rate, the raw materials are simple and easy to obtain, and avoid Effects of polluting by-products

Active Publication Date: 2019-03-29
SHANGHAI NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the understanding of the growth control of oligomeric carbon nitrogen polymers is still relatively shallow, espe

Method used

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  • Oxazinyl carbon-nitrogen polymer, and preparation method and application thereof
  • Oxazinyl carbon-nitrogen polymer, and preparation method and application thereof
  • Oxazinyl carbon-nitrogen polymer, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0059] Example 1

[0060] This embodiment provides an azinyl carbonitride polymer, which is prepared by the following steps:

[0061] Weigh 15.0g of melamine in a crucible, measure 30mL of distilled water into the crucible, place the crucible at 25°C and stir for 30 minutes to fully dissolve it, and then fire it at 450°C for 4 hours (heating rate is 5°C / min) Naturally cool to room temperature, grind and collect to obtain a white solid, which is an azinyl carbonitride polymer.

[0062] The azinyl carbonitride polymer prepared in Example 1 is a material for growing rod-like structures on a sheet structure, the rod-like length is about 20 microns, the diameter is 55 nm, the carbon to nitrogen ratio is 0.67, and it has photocatalytic activity.

[0063] The elemental analysis results are shown in Table 1. It can be seen that the carbon to nitrogen ratio of the sample prepared in Example 1 is 0.67, and the carbon to nitrogen ratio is lower than the theoretical C 3 N 4 0.75, indicating that ...

Example Embodiment

[0105] Example 2

[0106] The roasting time was changed to 2 hours, and the rest of the preparation process was the same as in Example 1.

[0107] Figure 1b X-ray diffraction (XRD) patterns of the samples prepared in Examples 1 to 3, as shown in Figure 1b, show that the diffraction peaks of the sample prepared in Example 2 are similar to those of melem, indicating that the sample is low Polycarbonitride photocatalyst.

[0108] Figure 2f It is a scanning electron microscope (SEM) photo of the sample prepared in Example 2, such as Figure 2f As shown, it indicates that the sample prepared in Example 2 is a material with a rod-shaped structure grown on a sheet structure, but the rod-shaped length is relatively short, about 5 microns.

[0109] Figure 5b The middle infrared spectrum analysis chart shows that the sample prepared in Example 2 also incorporates carbon-oxygen bonds.

[0110] Figure 6b The ultraviolet-visible absorption spectra of the samples prepared in Examples 1 to 3, suc...

Example Embodiment

[0112] Example 3

[0113] The roasting time was changed to 6 hours, and the rest of the preparation process was the same as in Example 1.

[0114] Figure 1b X-ray diffraction (XRD) patterns show that the sample prepared in Example 3 is an oligomeric carbon-nitrogen material.

[0115] Figure 2g Scanning electron microscope (SEM) photograph of the sample prepared in Example 3, such as Figure 2g As shown, it indicates that the sample prepared in Example 3 has a rod-shaped structure.

[0116] Figure 5b The infrared spectrum analysis chart shows that the sample prepared in Example 3 is doped with carbon-oxygen bonds, which increases oxygen defects and can improve catalytic activity.

[0117] Figure 6b The ultraviolet-visible absorption spectrum shows that the sample prepared in Example 3 has a strong light absorption intensity.

[0118] Figure 8 It shows that the sample prepared in Example 3 has certain photocatalytic activity.

[0119] Figure 1b X-ray diffraction (XRD) patterns of the ...

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Abstract

The invention relates to the field of semiconductor photocatalytic materials, in particular to an oxazinyl carbon-nitrogen polymer, and a preparation method thereof and application of the oxazinyl carbon-nitrogen polymer to serve as a photocatalyst. The oxazinyl carbon-nitrogen polymer is a heptazinyl-triazinyl carbon-nitrogen polymer which is of a rodlike structure and is spontaneously and directionally growing from a heptazinyl carbon-nitrogen polymer of a lamellar structure. The current carrier recombination rate of the oxazinyl carbon-nitrogen polymer is low, the rodlike structure can effectively capture luminous energy and bacteria, and the oxazinyl carbon-nitrogen polymer has excellent photocatalytic activity and stability, can be recycled, and has good actual application prospects.

Description

technical field [0001] The invention relates to the field of semiconductor photocatalytic materials, in particular to an azine-based carbon nitrogen polymer, a preparation method thereof and an application as a photocatalyst. Background technique [0002] The use of semiconductor photocatalysts to deal with environmental pollutants has become more and more popular among scientists. As a new sterilization technology, photocatalytic sterilization can effectively prevent the introduction of ultraviolet rays and toxic gases from causing damage to the human body, as well as the formation of toxic by-products and harm to the environment and the human body, compared with the widely used ultraviolet rays, ozone, and disinfectant sterilization. hazards. At the same time, photocatalytic sterilization uses sunlight to provide energy, which has the advantages of high efficiency, broad spectrum, and is not easy to produce drug resistance and secondary pollution. However, P25 TiO, which...

Claims

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Application Information

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IPC IPC(8): C08G73/06B01J27/24B01J35/02B01J35/10A01P1/00B82Y40/00B82Y30/00
CPCB01J27/24B01J35/02B01J35/10B82Y30/00B82Y40/00C08G73/0638C08G73/065
Inventor 霍宇凝李蕙帆杨玉萍丁梦娜罗柳林邹泉张子平裴文凯李和兴
Owner SHANGHAI NORMAL UNIVERSITY
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