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Environment-friendly preparing method of nanometer copper with ascorbic acid and Arabic gum serving as reducing agent and protective agent

A technology of gum arabic and ascorbic acid, which is applied in the field of preparation of nano-copper particles, can solve problems such as inability to apply large-scale production well, waste of human and material resources, etc., and achieve the effects of reducing waste, low cost, and simple synthesis process

Inactive Publication Date: 2017-05-17
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • Environment-friendly preparing method of nanometer copper with ascorbic acid and Arabic gum serving as reducing agent and protective agent
  • Environment-friendly preparing method of nanometer copper with ascorbic acid and Arabic gum serving as reducing agent and protective agent
  • Environment-friendly preparing method of nanometer copper with ascorbic acid and Arabic gum serving as reducing agent and protective agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 0.3 g of gum arabic, add it to a 250 mL three-neck flask, add 15 mL of deionized water, dissolve it under magnetic stirring, and make a gum arabic solution;

[0028] 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;

[0029] Pour the prepared copper sulfate solution into a three-necked flask containing gum arabic solution, raise the temperature to 50°C, and stir magnetically for 10 minutes to mix the two evenly to obtain a gum arabic-copper sulfate mixed solution;

[0030] Weigh 0.3 g of ascorbic acid, add it to a 50 mL beaker, and add 10 mL of deionized water to make an ascorbic acid solution with a mass concentration of 0.15 g / mL;

[0031] Under the action of magnetic stirring, the ascorbic acid solution was added dropwise to the mixed solution of gum arabic-copper sulfate, the temperature was raised to 50°C, and the magnetic stirring w...

Embodiment 2

[0034] Example 2: Same as Example 1, but the amount of gum arabic in step (1) is changed to 0.5 g, and the amount of deionized water is changed to 150 mL.

Embodiment 3

[0035] Example 3: Same as Example 1, but the amount of copper sulfate pentahydrate in step (2) is changed to 0.1 g, and the amount of deionized water is changed to 20 mL.

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Abstract

The invention relates to a preparing method of nanometer copper particles, in particular to an environment-friendly preparing method of nanometer copper with ascorbic acid and Arabic gum serving as a reducing agent and a protective agent. The method specifically comprises the steps that the Arabic gum and copper sulfate pentahydrate are prepared into an Arabic gum solution and a copper sulfate solution and mixed uniformly to obtain an Arabic gum-copper sulfate mixed solution; under the stirring effect, an ascorbic acid solution is dropped into the Arabic gum-copper sulfate mixed solution to react to obtain wine red nanometer copper sol; and finally black nanometer copper particles are obtained through the centrifuging, washing and vacuum drying manners. The particle size of the nanometer copper particles ranges from 100 nm to 200 nm, the average particle size is 160 nm, and in the ultraviolet-visible light spectrum, the characteristic absorption peak is located on the portion of 582.5 nm. The preparing method has the beneficial effects that preparation is efficient and fast, other auxiliary means is not needed, resource utilization is efficient, waste is reduced, the technology is simple, the cost is low, the method is environmentally friendly, and the application prospect is wide.

Description

technical field [0001] The invention relates to a preparation method of nano copper particles, in particular to a green preparation method of nano copper using ascorbic acid and gum arabic as reducing and protecting agents. Background technique [0002] As an emerging functional material, nano-metal particles have unique physical and chemical properties, so that they can be used in optical materials, catalyst materials, antibacterial materials, biosensor materials, coatings, battery electrode materials, antistatic materials, low-temperature ultra- Conductive materials are also widely used in information storage, photonics, sensors, imaging, etc. ]. Heat Treatment Technology and Equipment, 2010, 31(4): 1-8]. Because of its high specific surface area and high surface activity shared by nanomaterials, nano-copper can be used as a catalyst to reduce the chemical reaction temperature and increase the reaction rate; according to its small particle size and high electrical conduct...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
CPCB22F9/24
Inventor 杨正龙
Owner TONGJI UNIV
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