Water-soluble nano-copper and preparation method thereof

A nano-copper, water-soluble technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of difficulty in exerting lubricating and catalytic properties, easy to produce precipitation, short stabilization time, etc. The effect of high yield, low production cost and cheap raw materials

Active Publication Date: 2012-07-11
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And it has been tested that nano-copper has good extreme pressure anti-wear effect and excellent anti-oxidation performance as a lubricating oil additive, and has realized industrial production, but its application can only be limited to non-polar media
O.Tzhayik et al prepared nano-copper hydrosol with derivatives of xanthic acid as a modifier, but its stability time is short and precipitation is easy to occur; see O.Tzhayik.etal., Langmuir., (2002) 18: 3364
The existing nano-copper organosols and hydrosols are insoluble in water or have poor stability in water, so it is difficult to exert their due excellence in industrial applications using water as a medium, such as water-based metal cutting fluids and water-phase catalysis. lubricating and catalytic properties

Method used

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  • Water-soluble nano-copper and preparation method thereof
  • Water-soluble nano-copper and preparation method thereof
  • Water-soluble nano-copper and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] To 80 mL of distilled water, sequentially add 15 mL of NH 3 ·H 2 O, 0.016 mol mercaptoacetic acid, 5 mL 80% (mass concentration, the same below) hydrazine hydrate, and then transfer it to a 500 mL three-necked flask, and stir until completely dissolved. At this time, the solution is colorless and transparent, and recorded as system Ⅰ ; 0.032 mol CuSO 4 ·5H 2 Put O into a beaker, add 100 mL of distilled water to dissolve completely, the solution is blue, and record it as system II; slowly add II dropwise to the above mixed solution of I, and fully react at a constant temperature of 80°C for 1 h, and finally obtain a dark reddish-brown Nano-copper hydrosol, the nano-copper hydrosol can be stably dispersed in water for a long time without aggregation.

Embodiment 2

[0035] To 85 mL of distilled water, sequentially add 15 mL of NH 3 ·H 2 O, 0.016mol thioglycolic acid, 0.6048 g (0.016mol) NaBH 4 , and then transferred it to a 500 mL three-necked flask, and stirred until it was completely dissolved. At this time, the solution was colorless and transparent, which was recorded as System I; 0.032 mol Cu(NO 3 ) 2 ·3H 2 Put O into a beaker, add 100 mL of distilled water to dissolve completely, the solution is blue, and record it as system II; slowly add II dropwise to the above mixed solution of I, and fully react at a constant temperature of 60°C for 2 hours, and finally obtain a dark reddish-brown nano Copper hydrosol, the nano-copper hydrosol can be stably dispersed in water for a long time without aggregation.

Embodiment 3

[0037] To 80 mL of distilled water, sequentially add 15 mL of NH 3 ·H 2 O, 0.016 mol mercaptoacetic acid, 5 mL 80% hydrazine hydrate, and then transferred to a 500 mL three-necked flask, stirred until completely dissolved, at this time the solution was colorless and transparent, recorded as system Ⅰ; 0.032 mol Cu(OH ) 2 Put it into a beaker, add 100 mL of distilled water to completely disperse, the system is blue, and record it as system II; slowly add II to the above mixed solution of I, and fully react at a constant temperature of 40°C for 2 h, and finally obtain a dark reddish-brown nano Copper hydrosol, the nano-copper hydrosol can be stably dispersed in water for a long time without aggregation.

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Abstract

The invention belongs to the technical field of nanometer materials, and particularly relates to water-soluble nano-copper and a preparation method of the water-soluble nano-copper, wherein the water-soluble nano-copper is nano-copper clusters which are surface-modified by stable organic single molecules formed in a way that organic compound surface modifier containing sulfydryl is bonded on the surface of copper nanoparticles. The invention can obtain copper nanoparticles which can be effectively dispersed in water phases and can exist stably, and is simple in preparation process and preparation devices, low in raw material cost, low in the production cost, high in yield, and suitable for large-scale industrial production, and the raw materials are easily accessible.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to a water-soluble nanometer copper and a preparation method thereof. Background technique [0002] As an important branch of metal nanomaterials, nano-copper has been widely used in conductive coatings, electrode materials, magnetic fluids, catalysis and other fields due to its specific physical and chemical properties, especially as a new lubricant material showing its broad application prospects. However, pure nano-copper particles have large specific surface area and high chemical activity. They are easily oxidized in air and lose their original physical and chemical properties, and their dispersion in the medium is poor, and they are prone to precipitation. The defects of poor stability and dispersion of copper nanoparticles greatly limit their application in industrial fields, so surface modification of copper nanoparticles is required. [0003] In rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/24B82Y40/00B82Y30/00
Inventor 张治军李刚李小红
Owner HENAN UNIVERSITY
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