Preparation method of photocatalytic net loaded with carbon nitride

A carbon nitride and photocatalysis technology, applied in chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc. problem, to achieve the effect of uniform load, stable load effect and simple process

Inactive Publication Date: 2019-12-31
JIANGSU UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, the traditional photocatalysts are mainly solid powders, which need to be added to the water body to degrade pollutants in water treatment, which makes it difficult to recover the catalyst powder after the treatment is completed, and it is easy to cause secondary pollution to the water body. secondary pollution, so the immobilization research on powder catalysts has gradually become a hot spot

Method used

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  • Preparation method of photocatalytic net loaded with carbon nitride
  • Preparation method of photocatalytic net loaded with carbon nitride

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Example 1: 240g of ultra-thin carbon nitride was weighed, 280g of inorganic binder was added, and ultrasonic treatment was performed for 1 hour. Spray the above solution three times evenly on the 1.2m 2 The 80-mesh cotton fiber net was sprayed three times with 150g, 180g, and 190g respectively, and the interval between each spray was 2.5h, and it was dried at room temperature for 28h to obtain a completely dry photocatalytic net loaded with carbon nitride. The catalytic net is applied to the water purification of the river course (Jiangsu University Yudai River), and the removal rate of COD in the water is 78%.

Embodiment 2

[0025] Example 2: 200g of ultra-thin carbon nitride was weighed, 200g of inorganic binder was added, and ultrasonic treatment was performed for 1 hour. Spray the above solution three times evenly on the 1m 2 The 100-mesh cotton fiber net was sprayed three times with 120g, 150g, and 130g respectively, and the interval between each spray was 2h, and it was dried at room temperature for 24h to obtain a completely dry photocatalytic net loaded with carbon nitride. The catalytic net is applied to water purification in a certain landscape, and the removal rate of COD in water is 91%.

Embodiment 3

[0026] Example 3: 400g of ultra-thin carbon nitride was weighed, 500g of inorganic binder was added, and ultrasonic treatment was performed for 2 hours. Spray the above solution three times evenly on the 1.8m 2 The 50-mesh cotton fiber net was sprayed three times with 300g, 300g, and 300g respectively, and the interval between each spray was 3h, and it was dried at room temperature for 36h to obtain a completely dry photocatalytic net loaded with carbon nitride. The catalytic net is applied to the water quality treatment of the secondary sedimentation tank of a sewage treatment plant, and the COD removal rate in the water is 88%.

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Abstract

The invention relates to a preparation method of a photocatalytic net loaded with carbon nitride, and belongs to the technical field of photocatalyst preparation. The preparation method comprises thesteps: mixing an inorganic adhesive with ultrathin carbon nitride powder, carrying out ultrasonic treatment, spraying the mixed solution of ultrathin carbon nitride and the adhesive onto a cotton fiber net, and waiting for drying to obtain the photocatalytic net loaded with carbon nitride. The carbon nitride photocatalyst is loaded on the cotton fiber net by using the adhesive, so that the problemof immobilization of a powder catalyst is solved; and meanwhile, the photocatalytic net has a relatively good treatment effect when being applied to the aspect of water treatment. The method is simple in process and low in cost, is suitable for the field of water treatment, and has certain application prospect and use value.

Description

technical field [0001] The invention relates to a preparation method of a photocatalytic net loaded with carbon nitride, and belongs to the technical field of photocatalyst preparation. Background technique [0002] As a technology that uses sunlight as an energy source to excite semiconductors to generate photogenerated holes and electrons to react with other substances, photocatalytic technology has extensive research and applications in the fields of energy and the environment. Commonly used photocatalysts are titanium dioxide (TiO 2 ), zinc oxide (ZnO), tin oxide (SnO 2 ) etc., where TiO 2 It is the earliest photocatalyst studied. Due to its strong oxidation ability, TiO 2 It has broad application prospects in photocatalytic degradation of pollutants. [0003] In recent years, new photocatalysts have been discovered, researched and applied continuously. Among them, carbon nitride materials have great advantages in photocatalytic degradation of pollutants due to their...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J31/06C02F1/30
CPCB01J27/24B01J31/06B01J35/004C02F1/30C02F2103/007C02F2209/08C02F2305/10
Inventor 许晖朱兴旺李启笛莫曌李华明杨金曼
Owner JIANGSU UNIV
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