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Copper nanosheet and preparation method and application thereof

A copper nano-reaction technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effect of strong oxidation resistance, green and mild reaction conditions, and high monodispersity

Inactive Publication Date: 2019-08-23
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is still a big challenge to prepare Cu nanoparticles with uniform size, adjustable particle size and low surface organic matter content.

Method used

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  • Copper nanosheet and preparation method and application thereof
  • Copper nanosheet and preparation method and application thereof
  • Copper nanosheet and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 2.0g of cetyltrimethylammonium bromide (CTAB) into 200ml of ethanol, stir mechanically, then add 6.0g of L-ascorbic acid, stir well, then add copper hydroxide aqueous solution, which contains 0.98g of copper hydroxide, and heat to 80°C, heat for 1 hour after the color of the solution starts to change, cool to room temperature after the reaction, centrifuge and wash 4 times with 8000r / min anhydrous ethanol, take the precipitate and dry it at room temperature for 10 hours under the condition that the vacuum degree is less than 0.01MPa to obtain conductive ink copper Nanosheets;

[0040] Get the above-mentioned obtained copper nanosheets, and use a field-scanning electron microscope (SEM) to observe the morphology of the particles, the results are as follows: figure 1 shown.

Embodiment 2

[0042]Add 1.0g CTAB to 200ml ethanol, stir mechanically, then add 6.0g L-ascorbic acid, stir evenly, add copper hydroxide aqueous solution, which contains 0.98g copper hydroxide, heat to 80°C, and heat again after the color of the solution starts to change 1h, after the reaction is completed, cool to room temperature, centrifuge and wash 4 times with 8000r / min absolute ethanol, take the precipitate and dry it at room temperature for 10h under the condition that the vacuum degree is less than 0.01MPa, to obtain copper nanosheets;

[0043] Get the above-mentioned obtained copper nanosheets, and use a field-scanning electron microscope (SEM) to observe the morphology of the particles, the results are as follows: figure 2 shown.

Embodiment 3

[0045] Add 0.5g of PVP-k30 to 200ml of ethanol, stir mechanically, then add 6.0g of L-ascorbic acid, stir evenly, add copper hydroxide aqueous solution, which contains 0.98g of copper hydroxide, heat to 80°C, and wait for the color of the solution to change Reheat for 1 hour, cool to room temperature after the reaction is completed, centrifuge and wash 4 times with 8000r / min absolute ethanol, take the precipitate and dry it at room temperature for 10 hours under the condition that the vacuum degree is less than 0.01MPa, to obtain copper nanosheets;

[0046] Get the above-mentioned obtained copper nanosheets, and use a field-scanning electron microscope (SEM) to observe the morphology of copper nanosheets, the results are as follows: image 3 shown.

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Abstract

The invention relates to a copper nanosheet and a preparation method and application of the copper nanosheet. The preparation method comprises the following steps that 1, a protective agent, a reducing agent, a copper precursor and an alcohol solution or an alcohol aqueous solution are stirred to be uniform; 2, reduction reaction is carried out in the solution obtained in the step 1 in a heating manner till the reaction is thorough; and 3, washing is carried out after the reaction is finished, precipitate is obtained and dried, and the copper nanosheet is obtained, wherein the reducing agent is selected from ascorbic acid, and the protective agent is a high molecular surfactant. A complex chelating agent does not need to be added in the preparation process, intermediate processes such as separation purification, activation sensitization and the like are not needed, and the reaction condition is mild.

Description

technical field [0001] The invention belongs to the field of metal nanomaterials, and in particular relates to a preparation method of copper nanosheets. Background technique [0002] With the rapid development of electronic information technology, the packaging of integrated circuits is developing in the direction of light, thin and small three-dimensional integration. Among them, flip-chip interconnection technology has high packaging density, good electrical and thermal performance, and stable reliability. And lower cost, has become a technology that can adapt to the development requirements of future electronic packaging. The third-generation semiconductor material has a wide band gap, high breakdown electric field, high thermal conductivity, high electron saturation rate and higher radiation resistance, so it is more suitable for making high temperature, high frequency, radiation resistance and High-power devices are usually called wide-bandgap semiconductor materials ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB22F9/24B82Y30/00B82Y40/00B22F1/0551B22F1/07B22F1/054
Inventor 朱朋莉范吉磊李刚孙蓉
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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