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Copper-silver double-metal nanowire and preparation method thereof

A bimetallic nanometer, copper-silver technology, applied in the fields of transparent conductive films, printed circuits and related electronic products, conductive inks/inks, ultra-long copper-silver bimetallic nanowires and their preparations

Active Publication Date: 2015-05-13
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The present invention aims to overcome the shortcomings of the existing methods for preparing copper-silver bimetallic nanowires. The present invention provides an ultra-long copper-silver bimetallic nanowire and its preparation method

Method used

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  • Copper-silver double-metal nanowire and preparation method thereof
  • Copper-silver double-metal nanowire and preparation method thereof
  • Copper-silver double-metal nanowire and preparation method thereof

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preparation example Construction

[0058] More specifically, the present invention provides a method for synthesizing copper-silver bimetallic nanowires, the method is as follows:

[0059] Dissolve a cationic surfactant and an organic solvent at 100-250°C to obtain solution A, completely dissolve copper acetylacetonate as a copper source in solution A, and shake well to obtain dark green solution B. Add metal nanoparticles into solution B as a catalyst, react at 120-200°C for 2-15 hours, take out the solution, add silver acetylacetonate as a silver source and mix well, change the temperature to 24-150°C for reaction 10min-10 hours. The reaction system was cooled to room temperature. Wash and disperse with common organic solvents such as ethanol and toluene. After stirring and brief sonication, the nanowires can be uniformly dispersed in the organic solvent.

[0060] The synthesis process is divided into two stages. The first stage temperature is 120-200°C, which is the growth stage of copper nanowires, and t...

Embodiment 1

[0085] 0.5g of cetyltrimethylammonium bromide and 8.0g of hexadecylamine were completely dissolved at 180°C, then 0.2g of copper acetylacetonate was added as a copper source, Pt nanoparticles were used as a catalyst, and the reaction was carried out at 180°C for 10 hour, cooled to 120°C, added 10 mg of silver acetylacetonate as a silver source, and reacted at 120°C for 10 minutes. After cooling to room temperature, the resulting sample was washed several times with toluene. The resulting gray solid was dried under vacuum at 80°C for 2 hours. The diameter of the obtained copper-silver double-metal nanowire is 50-150 nanometers, and the length is 10-100 micrometers.

Embodiment 2

[0087] 0.5g of cetyltrimethylammonium bromide and 8.0g of hexadecylamine were completely dissolved at 180°C, then 0.2g of copper acetylacetonate was added as a copper source, Pt nanoparticles were used as a catalyst, and the reaction was carried out at 180°C for 10 hour, cooled to 120°C, added 20 mg of silver acetylacetonate as a silver source, and reacted at 120°C for 10 minutes. After cooling to room temperature, the resulting sample was washed several times with toluene. The obtained gray solid was vacuum-dried at 80° C. for 2 hours;

[0088] Depend on figure 1 with image 3 It can be seen that the diameter of the obtained copper-silver bimetallic nanowire is about 50-150 nanometers, and the length is 10-100 microns; figure 2 It is the XRD spectrum of the sample of this embodiment, from which it can be seen that the obtained product contains both silver and copper elements, and the two crystals are good;

[0089] Depend on Figure 4 It can be seen that the silver elem...

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Abstract

The invention relates to a copper-silver double-metal nanowire and a preparation method thereof. The preparation method comprises the following steps: 1) dissolving a cationic surfactant into an organic reductant to form an organic reducing system, wherein the organic reductant comprises long-chain alkyl amine; 2) adding copper salt dissolvable in the organic reducing system and metal nanoparticles as a catalyst into the organic reducing system prepared in the step 1), and reacting at a first specified temperature; 3) adding silver salt dissolvable in the organic reducing system into the organic reducing system after reaction in the step 2), reacting at a second specified temperature, filtering, cleaning and drying to obtain the copper-silver double-metal nanowire.

Description

technical field [0001] The invention relates to a copper-silver bimetallic nanowire and a preparation method thereof, in particular to an ultra-long copper-silver bimetallic nanowire and a preparation method thereof, as well as a conductive ink / ink, a transparent conductive film, a printed circuit and a conductive ink prepared therefrom. related electronics. Background technique [0002] In recent years, one-dimensional materials have attracted extensive attention due to their unique optical, electrical, and magnetic properties, especially their great application prospects in the fields of transparent display, photoelectric conversion, catalysis, and sensors. Due to the poor flexibility and high cost of the ITO materials currently used in the field of transparent conduction, the metal nanomaterial transparent conduction film will become an important substitute material for ITO. Compared with silver nanowires, copper nanowires also have good electrical conductivity, unique m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 孙静王晓王冉冉高濂王焱
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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