Preparation method of nano copper oxide and application of nano copper oxide in photocatalytic degradation of organic matters

Abstract

The invention relates to a preparation method of nano copper oxide and an application of the nano copper oxide in photocatalytic degradation of organic matters. The preparation method comprises the following steps: dropwise adding a precipitant solution into a copper ion-containing solution while stirring, continuing to stir for reaction after dropwise adding is completed, then transferring into amicrowave hydrothermal reaction kettle for a microwave hydrothermal reaction, and after the reaction is completed, and separating to obtain a product, washing and drying the product, grinding, and roasting in a tubular furnace in a nitrogen atmosphere to obtain the nano copper oxide. The nano copper oxide prepared by the method is added into wastewater containing methyl orange and other organic matters, hydrogen peroxide is added, the pH value is adjusted, an LED lamp is adopted for visible light irradiation, the highest photocatalytic degradation rate of the nanometer copper oxide prepared by the method on methyl orange can reach 99% or above, and the nano copper oxide can be recycled for five times after being washed and dried. and the photocatalytic degradation rate of methyl orange isstill more than 90%.

Description

technical field

[0001] The invention relates to the technical field of preparation of catalytic materials, in particular to a preparation method of nano copper oxide and its application in photocatalytic degradation of organic matter. Background technique

[0002] With the rapid development of industry and technology, while bringing great improvement to our human economic and living standards, it also puts enormous pressure on the environment. A large number of pollutants, such as chemical reagents and organic dyes produced by the chemical industry and printing and dyeing industry, are discharged into the water environment, causing very serious water pollution. Some organic pollutants such as aromatic hydrocarbons and azo compounds have complex structures and are difficult to remove in water. Although they are treated by treatment plants, they cannot be completely removed. Discharge into the environment will also cause pollution and damage to water bodies, which may endanger...

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