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

A nano-copper oxide and organic technology, which is applied in copper oxide/copper hydroxide, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem of high preparation cost and complicated preparation process of nano-copper oxide. and other problems, to achieve the effect of regular morphology, good crystallinity and high photocatalytic efficiency

Inactive Publication Date: 2020-12-18
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In order to solve the technical problems of cumbersome preparation process and high preparation cost of nano-copper oxide in the prior art, a preparation method of nano-copper oxide and its application in photocatalytic degradation of organic matter are provided

Method used

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

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Embodiment 1

[0029] A preparation method of nano-copper oxide, comprising the steps of:

[0030] Accurately weigh 3g of Cu(NO 3 ) 2 ·3H 2 O and 4.92g of NaOH solids were placed in a small beaker respectively, and were completely dissolved with 5mL of deionized water. Under stirring, the NaOH solution was slowly added dropwise to the copper nitrate aqueous solution, and reacted for 2h;

[0031]Then transfer it into a microwave hydrothermal reaction kettle, set the pressure of the microwave hydrothermal reaction to 3MPa, the microwave power to 800W, and conduct the microwave hydrothermal reaction at 120°C for 48min, and naturally cool to room temperature after the reaction;

[0032] The product was isolated, washed three times with deionized water and ethanol, dried at 80°C, ground, and roasted in a tube furnace under a nitrogen atmosphere. After rising to 500°C, heat-preserve and roast for 3 hours, and then lower to room temperature to obtain nano-copper oxide.

Embodiment 2

[0034] A preparation method of nano-copper oxide, comprising the steps of:

[0035] Accurately weigh 3g of Cu(NO 3 ) 2 ·3H 2 O and 4.92g of NaOH solids were placed in a small beaker respectively, and were completely dissolved with 5mL of deionized water. With stirring, the NaOH solution was slowly added dropwise to the copper nitrate aqueous solution, and reacted for 2h;

[0036] Then transfer it into a microwave hydrothermal reaction kettle, set the pressure of the microwave hydrothermal reaction to 3MPa, the microwave power to 800W, and conduct the microwave hydrothermal reaction at 150°C for 48 minutes, and naturally cool to room temperature after the reaction;

[0037] The product was isolated, washed three times with deionized water and ethanol, dried at 80°C, ground, and roasted in a tube furnace under a nitrogen atmosphere. After rising to 500°C, heat-preserve and roast for 3 hours, and then lower to room temperature to obtain nano-copper oxide.

Embodiment 3

[0039] A preparation method of nano-copper oxide, comprising the steps of:

[0040] Accurately weigh 3g of Cu(NO 3 ) 2 ·3H 2 O and 4.92g of NaOH solids were placed in a small beaker respectively, and were completely dissolved with 5mL of deionized water. With stirring, the NaOH solution was slowly added dropwise to the copper nitrate aqueous solution, and reacted for 2h;

[0041] Then transfer it into a microwave hydrothermal reaction kettle, set the pressure of the microwave hydrothermal reaction to 3MPa, the microwave power to 800W, and conduct the microwave hydrothermal reaction at 180°C for 48 minutes, and naturally cool to room temperature after the reaction;

[0042] The product was isolated, washed three times with deionized water and ethanol, dried at 80°C, ground, and roasted in a tube furnace under a nitrogen atmosphere. After rising to 500°C, heat-preserve and roast for 3 hours, and then lower to room temperature to obtain nano-copper oxide.

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B01J23/72B01J35/00B01J37/08B01J37/10B01J37/34C02F1/58B82Y40/00C02F101/30
CPCC01G3/02B01J23/72B01J37/10B01J37/08B01J37/346B01J35/004B01J35/0013C02F1/58B82Y40/00C01P2002/72C02F2101/308
Inventor 孙丽侠李晶晶胡佳艳宋忠诚邱滢
Owner JIANGSU UNIV OF TECH
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