C3N5 material as well as preparation method and application thereof

A C3N5, mixing technology, applied in the field of photocatalysis, achieves the effect of good photocatalytic activity and simple preparation method

Active Publication Date: 2019-10-18
CHENGDU UNIVERSITY OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The photocatalytic performance of the material prepared by this method needs to be further improved

Method used

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  • C3N5 material as well as preparation method and application thereof
  • C3N5 material as well as preparation method and application thereof
  • C3N5 material as well as preparation method and application thereof

Examples

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preparation example Construction

[0027] The present invention C 3 N 5 The preparation method of material, comprises the steps:

[0028] a. Mixing: Mix 3-amino-1,2,4-triazole and six-membered nitrogen heterocycle at a weight ratio of 1:0.8 to 1.2 to obtain a mixed powder, wherein the six-membered nitrogen heterocycle is At least one of cyanuric acid and barbituric acid;

[0029] b. Calcination: Heat the mixed powder at 480-520°C for 2.5-3.5 hours, take it out after cooling, wash and dry to obtain C 3 N 5 Material.

[0030]Step a is mainly to mix the raw materials according to the proportion. Preferably, the specific operation of step a is: add 3-amino-1,2,4-triazole and six-membered nitrogen heterocycle to absolute ethanol, stir for 1~ 3h, then sonicate for 0.5-1.5h, and dry at 60-80°C to obtain a mixed powder; preferably stir for 2h, then sonicate for 1h, and dry at 70°C.

[0031] As one of the implementations, in step a, the six-membered nitrogen heterocycle is cyanuric acid. Preferably, 3-amino-1,2,4...

Embodiment 1

[0043] Weigh 5g of 3-amino-1,2,4-triazole and 5g of cyanuric acid into a beaker and add 100mL of absolute ethanol, then stir the suspension at ambient temperature for 2h, then sonicate at room temperature Processing 1h. Then the suspension was dried in an oven at 70°C to obtain a powder, which was put into a 50mL crucible with a lid, moved to a muffle furnace at a rate of 5°C / min to 500°C and then kept for 3 hours. After cooling, put the sample into a beaker and add 100mL of distilled water, then put it into an ultrasonic machine for ultrasonic dispersion for 3h, then centrifuge and dry the sample to obtain C 3 N 5 Materials, recorded as 3-C-1. The XRD pattern of the material is shown in figure 1 , UV diffuse reflectance spectrum see figure 2 , the fluorescence emission spectrum under 366nm excitation is shown in image 3 .

Embodiment 2

[0045] Weigh 5g of 3-amino-1,2,4-triazole, 5g of cyanuric acid and 0.5g of barbituric acid into a beaker and add 100mL of absolute ethanol, then put the suspension at ambient temperature Stir for 2 h, then sonicate for 1 h at room temperature. Then the suspension was dried in an oven at 70 °C to obtain a white powder, which was put into a 50 mL crucible with a lid, moved to a muffle furnace at a heating rate of 5 °C / min to 500 °C and then kept for 3 h. After cooling, put the sample into a beaker and add 100mL of distilled water, then put it into an ultrasonic machine for ultrasonic dispersion for 3h, then centrifuge and dry the sample to obtain C 3 N 5 Materials, denoted as 3-C-1-2. The XRD pattern of the material is shown in figure 1 , UV diffuse reflectance spectrum see figure 2 , the fluorescence emission spectrum under 366nm excitation is shown in image 3 .

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Abstract

The invention relates to a preparation method and application of a C3N5 material, and belongs to the technical field of photocatalysis. The technical problem to be solved by the invention is to provide the preparation method of the C3N5 material. The method comprises the following steps: a, uniformly mixing 3-amino-1,2,4-triazole and a six-membered nitrogen heterocycle according to a weight ratioof the 3-amino-1,2,4-triazole to the six-membered nitrogen heterocycle of 1:(0.8-1.2) to obtain uniformly-mixed powder, wherein the six-membered nitrogen heterocycle is at least one selected from cyanuric acid and barbituric acid; and b, heating the uniformly-mixed powder, performing heat preservation at 480-520 DEG C for 2.5-3.5 h, performing cooling, taking out the cooled material, performing washing, and performing drying to obtain the C3N5 material. According to the method provided by the invention, when the C3N5 material is prepared, the mixture of the 3-amino-1,2,4-triazole and the specific six-membered nitrogen heterocycle is adopted as a raw material, the preparation method is simple, and the C3N5 material obtained by the method has better photocatalytic activity and can be widelyused as a photocatalyst.

Description

technical field [0001] The present invention relates to C 3 N 5 The material and its preparation method and application belong to the technical field of photocatalysis. Background technique [0002] Photocatalytic technology is a technology that uses photocatalysts to catalyze reactions under light irradiation. It is a green technology that has important application prospects in the fields of energy and the environment. Photocatalyst is the key to photocatalytic technology. It is a general term for chemical substances that can play a catalytic role under the excitation of photons. Semiconductor photocatalysts can be excited to generate electrons and holes under the irradiation of light, and redox reactions occur on the semiconductor surface. So as to realize the decomposition of water or the decomposition of organic pollutants, and realize the utilization and conversion of light energy. [0003] As a new type of semiconductor material, C 3 N 5 It has become a research h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/004
Inventor 杜海英雷泞菲梁朝贤何小康罗双
Owner CHENGDU UNIVERSITY OF TECHNOLOGY
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