Efficient preparation method for nano-copper particles with hydroxypropyl methyl cellulose as protective agent

A technology of hydroxypropyl methylcellulose and nano-copper particles, applied in nanotechnology, metal processing equipment, transportation and packaging, etc., can solve problems such as inability to apply large-scale production well, waste of human and material resources, etc., and achieve Effects of reducing waste, low cost, and wide application prospects

Inactive Publication Date: 2017-02-01
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The focus of its research is the effect of the ratio of precursor, reducing agent, protective agent and experimental conditions on the particle size, particle size distribution, surface morphology and performance of the product, but it does not involve too much output rate. Whether it needs to be carried out under heating, protective gas to prevent oxidation or other auxiliary conditions, so that it cannot be well applied in large-scale production, and it also causes a waste of human and material resources

Method used

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  • Efficient preparation method for nano-copper particles with hydroxypropyl methyl cellulose as protective agent
  • Efficient preparation method for nano-copper particles with hydroxypropyl methyl cellulose as protective agent
  • Efficient preparation method for nano-copper particles with hydroxypropyl methyl cellulose as protective agent

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Weigh 0.1 g of hydroxypropyl methylcellulose, add it into a 250 mL three-necked flask, add 15 mL of deionized water, dissolve it under magnetic stirring, and make a hydroxypropyl methylcellulose solution;

[0032] Weigh 0.05 g of copper sulfate pentahydrate and add it to a 50 mL beaker, add 5 mL of deionized water, and dissolve it under magnetic stirring to form a copper sulfate solution;

[0033] Pour the prepared copper sulfate solution into the three-necked flask containing the hydroxypropyl methylcellulose solution, and stir magnetically for 10 minutes to mix the two evenly to obtain a mixed solution of hydroxypropyl methylcellulose-copper sulfate;

[0034] Measure 3 mL of 50% hydrazine hydrate, add it to a 50 mL beaker, and add 10 mL of deionized water to make a hydrazine hydrate solution with a mass concentration of 0.115 g / mL;

[0035] Under the action of magnetic stirring, the hydrazine hydrate solution was added dropwise to the copper sulfate-hydroxypropyl methyl...

Embodiment 2

[0038] Example 2: Same as Example 1, but the solid hydroxypropyl methylcellulose in step (1) is changed to 0.5 g, and the deionized water is changed to 150 mL.

Embodiment 3

[0039] Example 3: Same as Example 1, but the copper sulfate pentahydrate in step (2) is changed to 0.1 g, and the deionized water is changed to 20 mL.

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Abstract

The invention relates to a preparation method for nano-copper particles, in particular to an efficient preparation method for nano-copper particles with hydroxypropyl methyl cellulose as a protective agent and hydrazine hydrate as a reducing agent. The method includes the specific steps that the hydroxypropyl methyl cellulose and copper sulfate pentahydrate are prepared into a hydroxypropyl methyl cellulose solution and a copper sulfate solution correspondingly, and the hydroxypropyl methyl cellulose solution and the copper sulfate solution are mixed uniformly to obtain a hydroxypropyl methyl cellulose-copper sulfate mixed solution; under the stirring action, a hydrazine hydrate solution is dropwise added into the hydroxypropyl methyl cellulose-copper sulfate mixed solution for reaction, and wine red nano-copper sol is obtained; and finally, through the centrifugal mode, washing mode, vacuum drying mode and other modes, the black nano-copper particles are obtained. The particle diameter of the nano-copper particles is 50-100 nm, and the characteristic absorption peak of the nano-copper particles in the ultraviolet-visible light spectrum is in the 582.5-nanometer position. The efficient preparation method for the nano-copper particles has the advantages that preparation is efficient and fast without the need for other auxiliary means, the resource utilization is efficient, waste is reduced, the process is simple, the cost is low, environmental protection is achieved, and the application prospects are wide.

Description

technical field [0001] The invention relates to a preparation method of nanometer copper particles, in particular to an efficient preparation method of nanometer copper particles using hydroxypropyl methylcellulose as a protective agent. Background technique [0002] Nanomaterials refer to materials with at least one dimension in 1-100 nm in three-dimensional space or composed of them as basic units. After decades of development, nanomaterials have become a rapidly developing new type of material, widely used in many aspects such as industry, agriculture, medicine and health, and daily life. For example, in medicine, nanomaterials can be used as antibacterial materials; In terms of chemical synthesis, the high catalytic activity of nanomaterials allows them to be used as catalysts; in the electronics industry, nanomaterials can be used as microelectronic materials. In addition, as an emerging functional material, nano-metal particles have unique physical and chemical proper...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
CPCB82Y40/00B22F9/24B22F1/054
Inventor 杨正龙陈赛
Owner TONGJI UNIV
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