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Technology using CuCl nanocrystals to photo-catalytically degrade dye pollutants under visible light

A nanocrystal and visible light technology, applied in the protection device against harmful chemicals, etc., can solve the problems of unsatisfactory catalyst stability, complex post-treatment of sludge, limited absorption, etc., and achieve excellent photocatalytic stability and excellent photocatalytic performance , the effect of easy operation

Active Publication Date: 2016-05-11
ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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Problems solved by technology

On the other hand, in this patented technology, the organic pollutants are precipitated from the water or flocculated and settled, which still faces the problem of complicated post-treatment of organic pollutant sludge and possible secondary pollution.
Finally, the stability of the catalyst in this patented technology is not ideal, and it needs to be regenerated before it can continue to be used
[0006] The present invention uses CuCl nanocrystals for photocatalytic degradation of dye pollutants for the first time, and overcomes its shortcomings such as limited absorption of sunlight, and invents a technology for photocatalytic degradation of dye pollutants with CuCl nanocrystals under visible light. The prepared CuCl nanocrystals have excellent photocatalytic effect and photocatalytic stability, and they still have a good degradation effect on dye organic pollutants after repeated use

Method used

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  • Technology using CuCl nanocrystals to photo-catalytically degrade dye pollutants under visible light
  • Technology using CuCl nanocrystals to photo-catalytically degrade dye pollutants under visible light
  • Technology using CuCl nanocrystals to photo-catalytically degrade dye pollutants under visible light

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Effect test

Embodiment 1

[0035] Weigh 1.92gCuSO 4 and 6g of polyvinylpyrrolidone were dissolved in 100mL of water, slowly added dropwise to the above solution with 1M sodium hydroxide, and the pH of the solution was adjusted to 11. Then 1.52g of hydroxylamine hydrochloride was added thereto, and heated to 80°C for reaction. After reacting for 4 hours, the reaction solution was cooled to room temperature and centrifuged to obtain the product. The scanning electron microscope photos of the products are shown in figure 1 a, X-ray diffraction pattern see figure 1 b.

Embodiment 2

[0037] Weigh 1.92gCuSO 4and 6g of polyvinylpyrrolidone were dissolved in 100mL of water, slowly added dropwise to the above solution with 1M sodium hydroxide, and the pH of the solution was adjusted to 5. Then 1.52g of hydroxylamine hydrochloride was added thereto, and heated to 80°C for reaction. After reacting for 4 hours, the reaction solution was cooled to room temperature and centrifuged to obtain the product.

Embodiment 3

[0039] Weigh 1.92gCuSO 4 and 6g of polyvinylpyrrolidone were dissolved in 100mL of water, slowly added dropwise to the above solution with 1M sodium hydroxide, and the pH of the solution was adjusted to 7. Then 1.52g of hydroxylamine hydrochloride was added thereto, and heated to 80°C for reaction. After reacting for 4 hours, the reaction solution was cooled to room temperature and centrifuged to obtain the product.

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Abstract

The invention discloses a technology using CuCl nanocrystals to photo-catalytically degrade dye pollutants under visible light. The technology includes the steps of firstly, dissolving ligand molecules and CuSO4 into water according to proportion, and using alkaline solution to adjust solution pH to 5-12; secondly, adding a certain amount of hydroxylamine hydrochloride for reduction, and heating to 40-100 DEG C to perform sufficient reaction; thirdly, cooling to room temperature, and separating to obtain products; fourthly, preparing mixed solution, of certain proportion, of the CuCl nanocrystals and the dye pollutants, adding H2O2 of certain proportion, and allowing for reaction for a certain period of time under visible light irradiation. The technology has the advantages that the technology is simple to operate, mild in condition and low in cost, and the prepared CuCl nanocrystals are high in crystallinity, excellent in photo-catalytic performance, and capable of deeply mineralizing and degrading dye type organic pollutants under visible light catalysis; meanwhile, the prepared CuCl nanocrystals are excellent in photo-catalytic stability and still good in degrading effect on the dye organic pollutants after being recycled for many times.

Description

technical field [0001] The invention relates to a technology for photocatalytically degrading dye pollutants by CuCl nanocrystals under visible light, and belongs to the technical field of inorganic nanomaterial applications. Background technique [0002] Human production and living activities have produced a large amount of waste and pollutants, causing serious pollution and damage to the environment, leading to the occurrence of pollution-related medical diseases and the emergence of abnormal weather. Therefore, environmental pollution and damage have become the current global serious problems faced by the range. Photocatalytic technology, because it uses abundant, clean and safe sunlight as the light source, and can degrade pollutants into non-polluting carbon dioxide and water molecules with the assistance of catalysts, has attracted a large number of researchers to develop Photocatalytic materials and technologies based on sunlight. Semiconductor nanomaterials have at...

Claims

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Application Information

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IPC IPC(8): A62D3/17A62D101/26A62D101/28
CPCA62D3/17A62D2101/26A62D2101/28
Inventor 贾巧娟黄琦苏顾凤龙秦笑梅
Owner ZHENGZHOU UNIVERSITY OF LIGHT INDUSTRY
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