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Preparation method of antioxidant copper nanoparticle

A technology of copper nanoparticles and oxidation resistance, which is applied in the field of transition metal nanoparticle synthesis, can solve problems such as pollution, energy consumption, and long reaction time, and achieve the effects of reducing production costs, strong oxidation resistance, and reduced reaction time

Inactive Publication Date: 2014-09-03
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these reducing agents have strong reducing ability, they have certain toxicity and cause serious pollution to the environment.
In order to inhibit the oxidation of copper nanoparticles, a protective agent is added to the reaction system to achieve surface modification, which will inevitably lead to increased cost and energy consumption
In addition, it has also been reported in the literature that copper nanoparticles were synthesized using glucose as a reducing agent, but it does not have oxidation resistance, and the reaction time is long (6 hours), which aggravates the reaction cost and hinders the promotion in actual production.

Method used

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  • Preparation method of antioxidant copper nanoparticle
  • Preparation method of antioxidant copper nanoparticle
  • Preparation method of antioxidant copper nanoparticle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Embodiment 1 Preparation of copper nanoparticles (1)

[0036] Dissolve 6.0 g of anhydrous sodium carbonate in 68 ml of deionized water and stir in a magnetic stirrer. After the anhydrous sodium carbonate is completely dissolved, add 4.30 g of trisodium citrate dihydrate and stir at medium speed for 15 minutes until completely mixed. Get 2 milliliters of 0.68 mol / liter copper sulfate pentahydrate and add dropwise in the above-mentioned mixed solution, the solution color changes from light blue to dark blue, after continuing to stir for 5 minutes, add 3.0 grams of sodium chloride and stir for 15 minutes. After the sodium chloride is completely dissolved, add 1.5 mol / L 30 ml of glucose, stir for 5 minutes, transfer the mixture into a three-necked bottle, seal it, place it in an oil bath at 95°C for 15 minutes, cool it for 24 hours, wash the sample by centrifugation, and dry it. . Place it in a blast oven at 70°C for 24 hours.

[0037] The X-ray diffraction pattern of the...

Embodiment 2

[0038] Embodiment 2 Preparation of copper nanoparticles (2)

[0039]Dissolve 9.0 g of anhydrous potassium carbonate in 68 ml of deionized water and stir in a magnetic stirrer. After the anhydrous potassium carbonate is completely dissolved, add 4.8 g of potassium citrate monohydrate and stir at a medium speed until completely mixed. Take 4 ml of 0.68 mol / liter copper sulfate pentahydrate and add it dropwise to the above mixed solution. The color of the solution changes from light blue to dark blue. After continuing to stir for 5 minutes, add 1.9 grams of potassium chloride and stir until the potassium chloride is completely dissolved. Add 30 ml of glucose 1.5 mol / L, stir for 5 minutes, transfer the mixture into a three-necked bottle and seal it, place it in a 100°C oil bath and heat for 15 minutes, after cooling, centrifuge to wash the sample, and dry it. Place it in a blast oven at 70°C for 24 hours.

[0040] The X-ray diffraction pattern of the prepared copper nanoparticles...

Embodiment 3

[0041] Embodiment 3 Preparation of copper nanoparticles (3)

[0042] Dissolve 7.0 g of anhydrous sodium carbonate in 68 ml of deionized water and stir in a magnetic stirrer. After the anhydrous sodium carbonate is completely dissolved, add 3.5 g of potassium sodium tartrate and stir until completely mixed. Take 4 ml of 0.68 mol / liter copper sulfate pentahydrate and add it dropwise to the above mixed solution. The color of the solution changes from light blue to dark blue. After stirring for 5 minutes, add 3.0 g of sodium chloride and stir until the sodium chloride is completely dissolved. Add 30 ml of glucose 1.5 mol / L, stir for 5 minutes, transfer the mixture into a three-neck bottle to seal, place in an oil bath at 100°C for 15 minutes, and then centrifuge to wash the sample after cooling, and then dry it. Place it in a blast oven at 70°C for 24 hours.

[0043] The X-ray diffraction pattern of the prepared copper nanoparticles is shown in image 3 .

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Abstract

The invention relates to a preparation method of an antioxidant copper nanoparticle and belongs to the technical field of synthesis methods for transition metal nanometer materials. The preparation method of the antioxidant copper nanoparticle adopts a liquid phase wet chemical reduction method and comprises the following steps: preparing a buffer solution, adding a complexing agent, adding a cupric precursor, adding halide and adding a reducing agent. The preparation method of the antioxidant copper nanoparticle has the advantages that the complexing agent like sodium citrate is added, so that reaction time is shortened, and the effects of saving energy and reducing consumption are realized; the halide like sodium chloride is added, so that generation of Cu2O is inhibited, and the effect of simple operation is realized; the reducing agent like glucose for reducing a precursor is added, so that the effect of environmental protection is realized; the preparation method of the antioxidant copper nanoparticle is simple in operation, environment-friendly, low in production cost and high in catalytic efficiency; and the prepared copper nanoparticle does not go bad after being placed for 4 months or a longer period of time in the air at room temperature.

Description

technical field [0001] The invention belongs to the technical field of synthesis methods of transition metal nanoparticles, in particular to a method for preparing copper nanoparticles with strong oxidation resistance Background technique [0002] Copper is one of the earliest metals discovered by human beings, and it is also an important industrial raw material, which is widely used in production and life. In the past ten years, the research of copper nanoparticles has aroused widespread attention of scholars at home and abroad, because copper nanoparticles have smaller size, larger specific surface area and higher chemical activity, showing that the corresponding bulk materials do not have. Excellent performance. If it is used instead of precious metals in high-grade lubricating oil additives, high-conductivity pastes, high-efficiency catalysts, and antibacterial agents, it can greatly reduce costs and has broad application prospects. However, due to the large specific s...

Claims

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Application Information

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IPC IPC(8): B22F9/24
Inventor 隋永明刘欣美刘闯徐满邹勃
Owner JILIN UNIV
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