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Preparation method of copper nanoparticles with different particle diameters

A technology of copper nanoparticles and particles, which is applied in the field of copper nanoparticles and its preparation, achieves the effects of low preparation requirements, controllable shape and particle size, and enhanced simplicity

Inactive Publication Date: 2010-04-14
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In short, the application of copper nanoparticles is still in its infancy.

Method used

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  • Preparation method of copper nanoparticles with different particle diameters
  • Preparation method of copper nanoparticles with different particle diameters
  • Preparation method of copper nanoparticles with different particle diameters

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Take 0.0025 mol of copper acetate and add it to 10 mL of ethylene glycol, take 1 mL of oleylamine and dissolve it in 10 mL of acetone, mix the two solutions, and stir vigorously. Disperse 0.25g of PVP in 8g of ethylene glycol (saturated sodium hydroxide), pour it into the mixture of the first two solutions, and heat to boiling. Disperse 1.00g of ascorbic acid in 12g of ethylene glycol (saturated with sodium hydroxide), then pour the ascorbic acid solution into the previous mixing system, the solution changes from blue to colorless quickly, then yellow, then red. Keep at the boiling point, continue to stir for 10min, and drop to room temperature. Extract the oil-soluble nanoparticles with cyclohexane, centrifuge them, take the precipitate, add acetone and alcohol mixture, ultrasonically disperse, and centrifuge at low speed for 5 minutes. The precipitate is copper nanoparticles with a particle size of 30-50nm, and take the upper cloudy liquid. The powder is s...

Embodiment 2

[0031] Example 2: 0.0025 mol of copper acetate was added to 10 mL of ethylene glycol, 1 mL of oleylamine was dissolved in 10 mL of acetone, and the two solutions were mixed and stirred vigorously. Disperse 0.2g of PVP in 8g of ethylene glycol (saturated with sodium hydroxide), pour it into the mixture of the first two solutions, and heat to boiling. Disperse 1.00g of ascorbic acid in 12g of ethylene glycol (saturated with sodium hydroxide), then pour the ascorbic acid solution into the previous mixing system, the solution changes from blue to colorless quickly, then yellow, then red. Keep at the boiling point, continue to stir for 10min, and drop to room temperature. Oil-soluble nanoparticles are extracted with cyclohexane, centrifuged, and the precipitate is taken, washed 3 to 5 times with acetone and alcohol, ultrasonically dispersed, and centrifuged at 6000 rpm for 5 minutes. The precipitate is copper nanoparticles with a particle size of 50nm (such as figure 2 shown in b...

Embodiment 3

[0032]Example 3: Add 0.0025 mol of copper chloride and 6 mL of glycerin to 10 mL of ethylene glycol at the same time, dissolve 2 g of oleic acid in 10 mL of acetone, mix the two solutions, and stir vigorously. Disperse 1.5g of PVP in 8g of ethylene glycol, mix the two liquids, and heat to boiling. Disperse 1.00 g of ascorbic acid in 12 mL of ethylene glycol (saturated with sodium hydroxide), pour the ascorbic acid solution into the aforementioned system, and keep boiling for 40 min to obtain a red-yellow solution. Washing, centrifugation, obtains yellow powder, the spherical copper nanoparticle (such as the diameter 200nm) figure 2 c. figure 2 d. image 3 a and image 3 shown in b).

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Abstract

The invention discloses a preparation method of copper nanoparticles with different particle diameters and relates to a metal nanoparticle. The invention provides a preparation method of copper nanoparticles with different particle diameters, which has simple, economic, environment-friendly process. The preparation method comprises the following steps: adding metal salt of copper chloride or copper acetate, a solvent, a protective agent, a complexing agent and a surfactant in a vessel in sequence, and stirring to obtain a mixture, wherein the protective agent is polyvinylpyrrolidone, polyvinyl alcohol, polyacrylic acid, or the like, the complexing agent is oleic acid, hexadecylamine, oleamide, or the like, and the surfactant is hexadecyl dimethyl ammonium bromide, sodium dodecyl benzene sulfonate or the like; adding a reducing agent in the mixture for reacting, wherein the reducing agent is ascorbic acid, sodium formaldehyde sulphoxylate, sodium borohydride, or the like; cooling the reactant till the temperature is below 40 DEG C, then adding a precipitating agent, mixing, and centrifugally separating; then washing with the organic solvent, centrifugating, and extracting the precipitate; and then drying the precipitate to obtain red powder copper nanoparticles with different particle diameters.

Description

technical field [0001] The invention relates to a metal nano particle, in particular to a copper nano particle capable of regulating particle size and shape in a wide range and a preparation method thereof. Background technique [0002] Metal nanoparticles not only have surface effect, volume effect, quantum size effect and macroscopic quantum tunneling effect, but also have peculiar electrical, magnetic, optical and structural properties. and other fields have been widely used (1.Grouchko, M., A.Kamyshny, et al. (2009). "Synthesis of copper nanoparticles catalyzed by pre-formed silver nanoparticles. "Journal of Nanoparticle Research 11 (3): 713-716) . At present, the synthesis of nanoparticles of some noble metals such as gold, platinum, silver, etc. has been extensively studied, while relatively cheap copper nanoparticles have been less studied. Copper nanoparticles have received more and more attention due to their broad application prospects in electronics, spectroscop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 王翠萍吴建林刘兴军陈远志张锦彬黄艺雄马云庆施展
Owner XIAMEN UNIV
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