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Preparation method and application of flaky nano copper oxide

A nano-copper oxide and flake technology is applied in the field of preparation of flake nano-copper oxide, which can solve the problems of increasing the production cost of copper oxide, affecting the photocatalytic performance, harming the production personnel and the like, achieving good heat exchange, convenient temperature adjustment, The effect of reducing production costs

Active Publication Date: 2019-11-12
GANSU AGRI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the preparation methods of nano-copper oxide mainly include microemulsion method, phase precipitation method, sol-gel method, template method, spray pyrolysis method, laser evaporation method, electrochemical method, etc. Some of the above-mentioned preparation methods of nano-copper oxide The use of organic solvents will pollute the environment and bring harm to the bodies of experimenters and production personnel. Some preparation processes are complex and require high equipment, which increases the production cost of copper oxide. Although there are some methods that overcome the above shortcomings , but there are a lot of defects inside the prepared nano-copper oxide grains, and the crystal shape is poor, which affects its photocatalytic performance

Method used

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  • Preparation method and application of flaky nano copper oxide
  • Preparation method and application of flaky nano copper oxide
  • Preparation method and application of flaky nano copper oxide

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preparation example Construction

[0035] A preparation method of flaky nano-copper oxide, comprising the following steps:

[0036] S1, accurately weigh copper salt and oxalic acid or oxalate, the molar ratio of the copper salt and the oxalic acid or oxalate is 1:0.8-1.2, preferably the molar ratio of copper salt and oxalic acid or oxalate is 1:1.05; the copper salt is one of copper chloride dihydrate and copper sulfate pentahydrate, the oxalic acid is oxalic acid dihydrate, and the oxalate is ammonium oxalate monohydrate; the copper chloride dihydrate, copper sulfate pentahydrate, Oxalic acid dihydrate and ammonium oxalate monohydrate are analytical grade raw materials.

[0037] S2, mix the copper salt weighed in S1 with oxalic acid or oxalate evenly and grind for 5-30 minutes, then add an appropriate amount of distilled water several times to make the mixture in a fluid state during grinding, and then grind for 0.5-1h; adding water is because in During the grinding process, the water will continue to evapora...

Embodiment 1

[0045] A preparation method of flaky nano-copper oxide, comprising the following steps:

[0046] S1, accurately weigh 8.5250g (0.0500moL) of copper chloride dihydrate and 6.6150g (0.0525moL) of oxalic acid dihydrate, so that the molar ratio of copper chloride dihydrate and oxalic acid dihydrate is 1:1.05;

[0047] S2, mix copper chloride dihydrate and oxalic acid dihydrate weighed in S1 evenly, grind for 10 minutes, then add appropriate amount of distilled water several times to keep the mixture in a fluid state during grinding, and then grind for 0.7 h;

[0048] S3, put the ground fluid mixture in S2 into a reactor, put the reactor into an oven and heat for 4 hours, and the temperature of the oven is 60°C;

[0049] S4, suction-filtering the mixture heated in S3, and then cleaning the filter cake with distilled water until there are no chloride ions in the filtrate, and then cleaning the filter cake with absolute ethanol for 1-2 times;

[0050] S5, put the filter cake cleaned...

Embodiment 2

[0056] A preparation method of flaky nano-copper oxide, comprising the following steps:

[0057] S1, accurately weigh 8.5250g (0.0500moL) of copper chloride dihydrate and 5.0400g (0.0400moL) of oxalic acid dihydrate, so that the molar ratio of copper chloride dihydrate and oxalic acid dihydrate is 1:0.8;

[0058] S2, mix the copper chloride dihydrate and oxalic acid dihydrate weighed in S1 evenly and grind for 5 minutes, then add an appropriate amount of distilled water several times to make the mixture in a fluid state during grinding, and then grind for 0.5 h;

[0059] S3, put the ground fluid mixture in S2 into a reactor, put the reactor into an oven and heat for 2 hours, and the temperature of the oven is 80°C;

[0060] S4, suction-filtering the mixture heated in S3, and then cleaning the filter cake with distilled water until there are no chloride ions in the filtrate, and then cleaning the filter cake with absolute ethanol for 1-2 times;

[0061] S5, putting the filter ...

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Abstract

The invention discloses a preparation method and application of flaky nano copper oxide. The preparation method of the flaky nano copper oxide mainly comprises the following steps: accurately weighingcopper salt and oxalic acid or oxalate, uniformly mixing the copper salt and the oxalic acid or the oxalate, then grinding, adding a proper amount of distilled water in the grinding process to enablethe mixture to be in a fluid state, heating, cleaning and drying after grinding to obtain a precursor copper oxalate, and calcining the precursor copper oxalate to obtain the flaky nano copper oxide.A preparation technology is simple, no organic solvent except ethanol is used in a preparation process, the preparation method is environment-friendly and safe, and prepared flaky nano copper oxide particles are uniform in size and small in particle size, and have good photocatalytic degradation performance on a methylene blue solution.

Description

technical field [0001] The invention relates to the field of preparation and application of copper oxide, in particular to a preparation method and application of flaky nano-copper oxide. Background technique [0002] Ordinary copper oxide is mainly used as a colorant and pigment for ceramics, enamel, and glass to make artificial gemstones, ceramic glazes, and colored glass. In addition, copper oxide can be used as an anti-wrinkle agent for paint, a polishing agent for glass, a bactericide, a metallurgical reagent, and can also be used in the rayon industry or as a raw material for the manufacture of copper salts. When the size of copper oxide powder reaches the nanoscale, due to its small size effect, macroscopic quantum tunneling effect, surface effect, and volume effect, it will show unique properties in light absorption, thermal resistance, magnetism, and melting point. , chemical activity and other aspects show special physical and chemical properties, making it more w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B01J23/72B82Y40/00
CPCC01G3/02B01J23/72B82Y40/00C01P2004/64C01P2004/24C01P2004/50C01P2004/61B01J35/39
Inventor 路军程军军
Owner GANSU AGRI UNIV
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