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A preparing method of a Cu2S/g-C3N4 heterojunction photocatalyst

A photocatalyst, g-c3n4 technology, applied in physical/chemical process catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of difficult operation, complex reaction raw materials, etc., to achieve environmental pollution-free, easy-to-use raw materials , the effect of mild reaction conditions

Inactive Publication Date: 2018-11-30
常州科力尔环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, composite photocatalysts are often obtained through multi-step reactions, and the reaction raw materials are complex and difficult to operate

Method used

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  • A preparing method of a Cu2S/g-C3N4 heterojunction photocatalyst
  • A preparing method of a Cu2S/g-C3N4 heterojunction photocatalyst
  • A preparing method of a Cu2S/g-C3N4 heterojunction photocatalyst

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Experimental program
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Effect test

Embodiment 1

[0022] a Cu 2 S / g-C 3 N 4 The preparation method of heterojunction photocatalyst, concrete steps are as follows:

[0023] Mix 10g of cuprous thiocyanate with 0.5g of ammonium chloride, grind the mixture evenly, place it in a tube furnace, and calcinate it at 400°C for 3 hours in a nitrogen atmosphere, wash the obtained product with distilled water and dry it to obtain Cu 2 S / g-C 3 N 4 heterojunction photocatalysts.

Embodiment 2

[0025] a Cu 2 S / g-C 3 N 4 The preparation method of heterojunction photocatalyst, concrete steps are as follows:

[0026] Mix 12g of cuprous thiocyanate with 0.5g of ammonium chloride, grind the mixture evenly, place it in a tube furnace, and calcinate it at 450°C for 4 hours in a nitrogen atmosphere, wash the obtained product with distilled water and dry it to obtain Cu 2 S / g-C 3 N 4 heterojunction photocatalysts.

Embodiment 3

[0028] a Cu 2 S / g-C 3 N 4 The preparation method of heterojunction photocatalyst, concrete steps are as follows:

[0029] Mix 15g of cuprous thiocyanate with 0.6g of ammonium chloride, grind the mixture evenly, place it in a tube furnace, and calcinate it at 500°C for 4 hours in a nitrogen atmosphere, wash the obtained product with distilled water and dry it to obtain Cu 2 S / g-C 3 N 4 heterojunction photocatalysts.

[0030] In order to compare the catalytic activity of the catalyst prepared by the present invention, hereinafter in this description, pure g-C 3 N 4 It is obtained through the following process: put 15g of melamine in a tube furnace and calcinate it at 500°C for 4h, and the product obtained is marked as g-C 3 N 4 .

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Abstract

The invention relates to the technical field of photocatalysts, and particularly relates to a preparing method of a Cu2S / g-C3N4 heterojunction photocatalyst. The method includes one-step calcining todirectly obtain the Cu2S / g-C3N4 composite catalyst. A certain amount of cuprous thiocyanate is mixed with ammonium chloride, the mixture is fully ground and then calcined in a tubular furnace, and a product is washed with distilled water and then dried to obtain the Cu2S / g-C3N4 heterojunction photocatalyst. The photocatalyst is prepared through a one-step calcining manner, and a preparation process is simple. The photocatalyst has good visible light response capability, a heterojunction structure facilitates separation of photo-induced electron and holes, catalytic activity is high, and the photocatalyst has high practical value and a good application prospect in the field of environment protection. Raw materials of the photocatalyst are easily available and low in cost, a reaction condition is mild, and the method is free of environment pollution and prone to industrial production.

Description

technical field [0001] The present invention relates to a kind of photocatalyst, relate in particular to a kind of Cu 2 S / g-C 3 N 4 Preparation method of heterojunction photocatalyst. Background technique [0002] As a green technology for environmental pollution control, photocatalytic technology is playing an increasingly important role in the field of environmental protection. However, most semiconductor photocatalysts currently face bottlenecks such as insufficient visible light response and low quantum efficiency. Graphite carbon nitride (g-C 3 N 4 ) as a completely non-metallic semiconductor has the advantages of stable chemical properties, narrow bandgap, and strong compatibility, which makes it have great development potential in the field of photocatalysis. However, simple g-C 3 N 4 The efficiency of visible light catalytic degradation of pollutants is not high, which is mainly due to the fact that the photogenerated electrons and holes generated on the surfa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24
CPCB01J27/24B01J35/39
Inventor 宋伟傅小飞李稳高永
Owner 常州科力尔环保科技有限公司
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