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Preparation method of nano cuprous oxide powder

A technology of nano-cuprous oxide and powder, applied in the direction of copper oxide/copper hydroxide, nanotechnology, nanotechnology, etc., can solve the problems of poor reproducibility of the preparation method, inappropriate preparation of ultra-fine copper powder, unstable reaction, etc. Achieve the effect of narrow particle size distribution, uniform particle size and good reproducibility

Inactive Publication Date: 2020-01-03
CENT SOUTH UNIV
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Problems solved by technology

[0003] However, the traditional preparation methods of nano-copper oxide powder, such as electrolysis or atomization, produce products with a large particle size, even up to several microns, which is not suitable for the preparation of ultra-fine copper powder
[0004] At the same time, the existing preparation method of nano-cuprous oxide powder has poor reproducibility, unstable reaction, and easy oxidation during the washing process.

Method used

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Examples

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Embodiment

[0022] 40g CuSO 4 ·5H 2 O, prepare 250ml copper sulfate solution with a concentration of 0.5mol / L, and place the solution in a 500ml water bath to preheat to 30°C. Then, under stirring, 20wt% ammonia water was added dropwise to form a blue turbid liquid with a certain concentration, and the mass ratio of ammonia water to copper salt was 1:3. Then slowly drop 80wt% of the reducing agent hydrazine hydrate solution, the molar ratio of hydrazine hydrate to copper salt is 1:6. Then, 30ml of 6g / L tetramethylammonium hydroxide solution was added, and then kept for 2h to obtain brick red powder. The brick red powder is washed with a 2,6-di-tert-butyl-4-methylphenol ethanol solution with a concentration of 2.5 g / L, and vacuum dried to obtain the cuprous hydroxide powder.

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Abstract

The invention relates to a preparation method of nano cuprous oxide powder. The preparation method comprises the following steps: adjusting the pH value of a copper salt solution obtained by dissolving a soluble copper salt to 7-8, carrying out preheating, then adding a reducing agent for reacting, adding a dispersing agent to obtain the cuprous oxide powder, cleaning the cuprous oxide powder by acoating agent solution, and carrying out drying to obtain nano cuprous oxide.

Description

Technical field [0001] The invention relates to the preparation of nano oxides, in particular to a preparation method of nano cuprous oxide powder. Background technique [0002] Nano cuprous oxide powder has great application potential and high added value due to its excellent physical and chemical properties and some special properties. Nano cuprous oxide powder is mainly used in the fields of powder metallurgy, electronic materials, friction materials, oil-impregnated bearings, conductive materials, medicine, diamond products and mechanical parts. In the field of capacitors, its role is even more indispensable. [0003] However, the traditional preparation methods of nano-copper oxide powder, such as electrolysis or atomization, produce products with a large particle size, even up to several microns, which is not suitable for preparing ultrafine copper powder. [0004] At the same time, the existing preparation method of nano cuprous oxide powder has poor reproducibility, unstabl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G3/02B82Y30/00
CPCB82Y30/00C01G3/02C01P2004/64
Inventor 刘芳洋贾明艾燕蒋良兴
Owner CENT SOUTH UNIV
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