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Method for preparing nano copper powder by taking copper oxide as raw material

A technology of nano-copper powder and copper oxide, which is applied in nanotechnology, nanotechnology, nanotechnology, etc. for materials and surface science. It can solve the problems of high energy consumption and large particle size of copper powder, and achieve low energy consumption and low volatility. The effect of small degree and saving additives

Pending Publication Date: 2022-04-22
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to solve the problems of high energy consumption and large particle size of the prepared copper powder in the prior art in the preparation of nano-copper powder by using copper oxide, and to provide a method for preparing nano-copper powder with copper oxide as raw material. Copper powder method, using this method can prepare nano-copper powder with uniform particle size distribution and an average particle size of 50-70nm, and the preparation process is simple and controllable

Method used

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  • Method for preparing nano copper powder by taking copper oxide as raw material
  • Method for preparing nano copper powder by taking copper oxide as raw material
  • Method for preparing nano copper powder by taking copper oxide as raw material

Examples

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Embodiment 1

[0022] A method for preparing nano-copper powder with copper oxide as raw material, comprising the steps of:

[0023] S1. Choline chloride and glycerol were prepared in a molar ratio of 1:2 at 80°C to form a colorless and transparent deep eutectic ionic liquid. Add 0.3 g of copper oxide powder into 50 mL of the eutectic ionic liquid at 100° C., stir and dissolve to obtain a bright yellow solution A. Add 1.5 g of ascorbic acid into solution A, stir and dissolve to obtain solution B. Add 1.6g of potassium hydroxide into solution B, stir and dissolve to obtain solution C.

[0024] S2. Put solution C in a reaction vessel at 100° C. for solvothermal reaction for 12 hours. The product copper powder was separated under a nitrogen atmosphere, and the product was washed four times with absolute ethanol and ultrapure water, and the washed copper powder was vacuum-dried, and sealed with nitrogen gas for storage. The nano-copper powder prepared in this embodiment is subjected to X-ray ...

Embodiment 2

[0026] A method for preparing nano-copper powder with copper oxide as raw material, comprising the steps of:

[0027] S1. Choline chloride and glycerol were prepared at a molar ratio of 1:2 at a temperature of 90°C to form a colorless and transparent deep eutectic ionic liquid. Add 0.5 g of copper oxide powder into 100 mL of the eutectic ionic liquid at 105° C., stir and dissolve to obtain a bright yellow solution A. Add 3.0 g of ascorbic acid into solution A, stir and dissolve to obtain solution B. Add 3.0 g of potassium hydroxide into solution B, stir and dissolve to obtain solution C.

[0028] S2. Put solution C in a reaction vessel at 105° C. for solvothermal reaction for 8 hours. The product copper powder was separated under a nitrogen atmosphere, and the product was washed five times with absolute ethanol and ultrapure water respectively, and the washed copper powder was vacuum-dried, and sealed with nitrogen gas for preservation. After testing, the purity of the nano...

Embodiment 3

[0030] A method for preparing nano-copper powder with copper oxide as raw material, comprising the steps of:

[0031] S1. Choline chloride and glycerol were prepared at a molar ratio of 1:3 at a temperature of 85°C to form a colorless and transparent deep eutectic ionic liquid. Add 0.2 g of copper oxide powder into 100 mL of the eutectic ionic liquid at 90° C., stir and dissolve to obtain a bright yellow solution A. Add 1.0 g of sodium ascorbate into solution A, stir and dissolve to obtain solution B. Add 0.3g of sodium hydroxide into solution B, stir and dissolve to obtain solution C.

[0032] S2. Put solution C in a reaction vessel at 110° C. for solvothermal reaction for 8 hours. The product copper powder was separated under a nitrogen atmosphere, and the product was washed four times with absolute ethanol and ultrapure water, and the washed copper powder was vacuum-dried, and sealed with nitrogen gas for storage. After testing, the purity of the nano-copper powder prepa...

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Abstract

The invention discloses a method for preparing nano copper powder by taking copper oxide as a raw material, which comprises the following steps: S1, adding copper oxide into eutectic ionic liquid at 80-150 DEG C, and stirring and dissolving to obtain a luminous yellow solution A; adding ascorbic acid or sodium ascorbate into the solution A, stirring and dissolving to obtain a solution B; adding hydroxide particles into the solution B, and stirring and dissolving to obtain a solution C; and S2, the solution C is placed in a reaction container, a stirring reaction is conducted for 6-20 h at the temperature of 100-120 DEG C, then a product is separated out in the inert atmosphere, the product is washed 3-5 times with absolute ethyl alcohol and ultrapure water respectively, vacuum drying is conducted, then sealing storage is conducted with inert gas, and the nano-copper powder with the purity larger than or equal to 99.99% is obtained. The method is simple and controllable, and the prepared nano copper powder is high in purity and uniform in particle size distribution.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a method for preparing nanometer copper powder by using copper oxide as a raw material. Background technique [0002] Nano-copper powder is widely used in the fields of electronics, automobiles, aerospace, precision machinery manufacturing, medical and health, chemical industry, high-end paint and building materials, etc. Important raw materials for friction materials, non-ferrous metal alloys, antistatic materials and special coatings, chemical catalysts, chemical dye additives, lubricants and other products. Therefore, the research on the manufacturing technology of nano-copper powder has important theoretical significance and practical application value. [0003] Copper oxide (CuO) is a black oxide of copper, which is an important raw material for preparing copper powder in industry. Since copper oxide is insoluble in water and organic solvents such as ethano...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/054B82Y30/00B82Y40/00
CPCB22F9/24B82Y30/00B82Y40/00B22F2009/245
Inventor 夏文堂杨文强韩山玉尹建国袁晓丽周雪娇安娟
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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