Method for preparing nano copper oxide by microwave hydrothermal method and application of nano copper oxide

A technology of nano-copper oxide and microwave hydrothermal method, which is applied in the field of nano-materials, can solve the problems of large size and structure of copper oxide, poor adsorption effect of organic dyes, uneven heating, etc., and achieve better crystallinity and better adsorption effect , the effect of improving work efficiency

Inactive Publication Date: 2020-11-06
JIANGSU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the technical problems of uneven heating in the preparation of copper oxide in the prior art, the size and structure of the prepared copper oxide,

Method used

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  • Method for preparing nano copper oxide by microwave hydrothermal method and application of nano copper oxide
  • Method for preparing nano copper oxide by microwave hydrothermal method and application of nano copper oxide
  • Method for preparing nano copper oxide by microwave hydrothermal method and application of nano copper oxide

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Embodiment 1

[0030] A method for preparing nano-copper oxide by microwave hydrothermal method, comprising the steps of:

[0031] (1) Weigh copper chloride dihydrate and sodium hydroxide according to the molar ratio of 1:10, dissolve them in 5mL deionized water until completely dissolved, form copper chloride aqueous solution and sodium hydroxide solution, and oxidize the above hydroxide under stirring The sodium solution is added dropwise in the above copper chloride aqueous solution to obtain the precursor copper hydroxide mixed solution;

[0032] (2) After transferring the precursor copper hydroxide mixed solution to the lining of the microwave hydrothermal reaction kettle, install it in a microwave reactor for microwave hydrothermal reaction. The reaction conditions are pressure 4MPa, power 1000W, and sintering at 120°C for 24min , cooled to room temperature after the reaction; washed three times with deionized water and three times with ethanol, then dried in an oven at 70°C to obtain ...

Embodiment 2

[0036] A method for preparing nano-copper oxide by microwave hydrothermal method, comprising the steps of:

[0037] (1) Weigh copper acetate monohydrate and sodium hydroxide according to the molar ratio of 1:30, dissolve them in 5mL deionized water until completely dissolved, form copper acetate aqueous solution and sodium hydroxide solution, and dissolve the above sodium hydroxide solution under stirring Add dropwise in above copper acetate aqueous solution, obtain precursor copper hydroxide mixed solution;

[0038] (2) After transferring the precursor copper hydroxide mixed solution to the lining of the microwave hydrothermal reaction kettle, install it in a microwave reactor for microwave hydrothermal reaction. The reaction conditions are pressure 4MPa, power 1000W, and sintering at 120°C for 48min. , cooled to room temperature after the reaction; washed three times with deionized water and three times with ethanol, then dried in an oven at 60°C to obtain nano-copper oxide....

Embodiment 3

[0041] A method for preparing nano-copper oxide by microwave hydrothermal method, comprising the steps of:

[0042] (1) Weigh copper sulfate pentahydrate and sodium hydroxide according to the molar ratio of 1:10, dissolve them in 5mL deionized water until completely dissolved, form copper sulfate aqueous solution and sodium hydroxide solution, and mix the above sodium hydroxide solution with stirring Add dropwise to the above copper sulfate aqueous solution to obtain the precursor copper hydroxide mixed solution;

[0043] (2) After transferring the precursor copper hydroxide mixed solution to the lining of the microwave hydrothermal reaction kettle, install it in a microwave reactor for microwave hydrothermal reaction. The reaction conditions are pressure 4MPa, power 1000W, sintering at 150°C for 24min , cooled to room temperature after the reaction; washed three times with deionized water and three times with ethanol, then dried in an oven at 80°C to obtain nanometer copper o...

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Abstract

The invention relates to a method for preparing nano copper oxide by a microwave hydrothermal method and application of the nano copper oxide. The preparation method comprises the following steps: (1)respectively dissolving a soluble copper salt and sodium hydroxide in water to form a copper salt aqueous solution and a sodium hydroxide solution, and dropwise adding the sodium hydroxide solution into the copper salt aqueous solution while stirring to obtain a precursor solution; and (2) putting the precursor solution into a microwave hydrothermal reaction kettle to carry out microwave hydrothermal reaction, cooling to room temperature after the reaction is finished, washing and drying to obtain the nano copper oxide. The nano copper oxide is prepared by adopting a microwave hydrothermal method, and the method disclosed by the invention is uniform in heating, short in reaction period, simple to operate and high in working efficiency, has a relatively good adsorption effect on organic dyes such as methyl orange, methyl red, Congo red and methylene blue, and has a wide application prospect in sewage treatment.

Description

technical field [0001] The invention relates to the technical field of nanomaterials, in particular to a method for preparing nano copper oxide by a microwave hydrothermal method and an application of nano copper oxide. Background technique [0002] my country's fresh water resources are relatively scarce, especially during the period of rapid economic growth, due to the discharge of a large amount of industrial and household wastewater, the shortage of water resources has intensified. With the development of the textile printing and dyeing industry, a large amount of waste water with toxic and harmful organic pollutants is discharged into the environment, which poses a great threat to human survival. Organic dyes are representative organic pollutants, which have become one of the main problems in sewage treatment. Common treatment methods for wastewater include physical adsorption and chemical treatment, and in physical adsorption, a good adsorbent is the key to treating w...

Claims

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Application Information

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IPC IPC(8): C01G3/02B82Y40/00B01J20/06B01J20/30C02F1/28C02F101/30
CPCC01G3/02B82Y40/00B01J20/06B01J20/3078C02F1/281C01P2002/72C01P2004/03C01P2004/20C02F2101/308
Inventor 孙丽侠李晶晶胡佳艳宋忠诚邱滢
Owner JIANGSU UNIV OF TECH
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