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Preparation method and application of near-infrared light response type thin-layer carbon nitride photocatalytic material

A technology of near-infrared photoresponsive and catalytic materials, which is applied in the field of preparation of near-infrared photoresponsive thin-layer carbon nitride photocatalytic materials, which can solve the problems of low utilization rate of sunlight and achieve high-efficiency photocatalytic degradation performance and simple raw materials , the effect of improving the utilization rate

Active Publication Date: 2020-02-04
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the g-C of the monodisperse structure 3 N 4 Nanosheets still cannot extend to the near-infrared region, so the utilization rate of sunlight is still low. In addition, g-C with monodisperse structure 3 N 4 Nanosheets are not thin-layer structures

Method used

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  • Preparation method and application of near-infrared light response type thin-layer carbon nitride photocatalytic material
  • Preparation method and application of near-infrared light response type thin-layer carbon nitride photocatalytic material
  • Preparation method and application of near-infrared light response type thin-layer carbon nitride photocatalytic material

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Effect test

Embodiment 1

[0026] A method for preparing a near-infrared photoresponsive thin-layer carbon nitride photocatalytic material, comprising the following steps:

[0027] The first step (the first calcination): Weigh nine portions of 2.5 g melamine and place them in nine crucibles (the crucibles need to be covered), and place the nine crucibles (arranged in 3×3) in the central temperature of the muffle furnace. Calcination was carried out in a controlled area; the heating parameters were as follows: set the temperature from room temperature to 600 °C at a uniform speed after 220 min, and at 600 °C ◦ C for 4 hours; then cooled naturally, the obtained solid is near-infrared photoresponsive multilayer carbon nitride (non-commercial, prepared by the above steps), and the next stage of operation was carried out after grinding.

[0028] The second step (the second calcination): Weigh six parts of 0.4 g ground near-infrared light-responsive multilayer carbon nitride and place them in six arks, and pl...

Embodiment 2

[0030] A method for preparing a near-infrared photoresponsive thin-layer carbon nitride photocatalytic material, comprising the following steps:

[0031] The first step (the first calcination): Weigh nine portions of 2.8 g melamine and place them in nine crucibles (the crucibles need to be covered), and place the nine crucibles (arranged in 3×3) in the central temperature of the muffle furnace. Calcination was carried out in a controlled area; the heating parameters were as follows: set the temperature from room temperature to 620 °C at a constant speed for 250 min, and keep it at 620 °C for 3 hours; Non-commercial, prepared by the above steps), after grinding, proceed to the next stage of operation.

[0032] The second step (the second calcination): Weigh six parts of 0.5 g ground near-infrared light-responsive multilayer carbon nitride and place them in six arks, and place the six arks (in a 3×2 arrangement) Calcination was carried out in the central temperature control zon...

Embodiment 3

[0034] A method for preparing a near-infrared photoresponsive thin-layer carbon nitride photocatalytic material, comprising the following steps:

[0035] The first step (the first calcination): Weigh nine parts of 3 g melamine and place them in nine crucibles (the crucibles need to be covered), and put the nine crucibles (arranged in 3×3) in the central temperature of the muffle furnace. Calcination was carried out in a controlled area; the heating parameters were as follows: set the temperature from room temperature to 650 °C at a uniform rate after 300 min, and set the temperature at 650 °C ◦ C for 2 hours; then cooled naturally, the obtained solid is near-infrared photoresponsive multilayer carbon nitride (non-commercial, prepared by the above steps), and the next stage of operation was carried out after grinding.

[0036] The second step (the second calcination): Weigh six parts of 0.6 g of ground near-infrared light-responsive multilayer carbon nitride and place them in s...

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Abstract

The invention relates to the technical field of photocatalysis, and concretely relates to a preparation method and an application of a near-infrared light response type thin-layer carbon nitride photocatalytic material. The near-infrared light response type thin-layer carbon nitride photocatalytic material is obtained by using a two-time calcination technology. The near-infrared light response type thin-layer carbon nitride photocatalytic material can accurately regulate the energy band structure of carbon nitride, greatly widens the light absorption range, increases the specific surface area,and finally realizes dual improvement of the oxidation capability and the sunlight utilization rate of the carbon nitride material. The near-infrared light response type thin-layer carbon nitride photocatalytic material has the advantages of simple and cheap raw material (only one raw material being melamine), simple preparation method (only two-time calcination), and good photocatalytic performance.

Description

technical field [0001] The invention relates to the technical field of photocatalysis, in particular to a preparation method and application of a near-infrared photoresponsive thin-layer carbon nitride photocatalytic material. Background technique [0002] Wastewater pollution from industrial organic dyes is of toxic and refractory nature, which poses a serious threat to human health and the natural environment, and thus has attracted increasing attention worldwide. In view of this, many effective water treatment technologies (such as physical adsorption, chemical adsorption, membrane filtration, microbial degradation and photocatalytic degradation technologies, etc.) have been developed to remove organic dyes in wastewater. Among them, photocatalytic degradation technology is an environmentally friendly water treatment technology, which has the advantages of high cleanliness, no secondary pollution, short time and easy operation. However, since the vast majority of semic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C02F1/30C02F101/38
CPCB01J27/24C02F1/30C02F2101/40C02F2305/10B01J35/39Y02W10/37
Inventor 张蓓蓓莫曌
Owner YANCHENG INST OF TECH
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