Silver-coated copper nanowire and preparation method therefor

A copper nanowire and silver-coated technology, which is applied in nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of increased production costs, low productivity of copper nanowires, and difficulty in large-scale production

Active Publication Date: 2017-03-22
BIONEER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since this production method uses a high-pressure reactor, there are problems in that the production cost increases and it is difficult to implement large-scale production
However, the preparation method still has problems of low productivity or low quality consistency of the prepared copper nanowires, etc.

Method used

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  • Silver-coated copper nanowire and preparation method therefor
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  • Silver-coated copper nanowire and preparation method therefor

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preparation example Construction

[0071] The silver-coated copper nanowires prepared by the preparation method of the present invention preferably have a length of 5-10 μm, a diameter of 200-300 nm, and a silver content of 5-90 parts by weight based on 100 parts by weight of the total nanowires, but the length, The diameter and silver content are not limited thereto.

[0072] Compared with conventional copper nanowires such as copper nanowires not coated with silver, the silver-coated copper nanowires of the present invention have better oxidation stability and thermal stability.

[0073] In the present invention, the silver content of the silver-coated copper nanowires may be 2-60 parts by weight based on 100 parts by weight of the total nanowires. When the silver content is less than 2 parts by weight based on the total weight, the copper nanowires cannot be completely coated with silver. When the silver content is 60 parts by weight or more, there is silver not coated on the copper nanowires, so there is a...

Embodiment 1

[0082] Embodiment 1: use piperazine (C 4 h 10 N 2 ) to prepare copper nanowires

[0083] 2000ml of water (ultrapure water) was added to a 3000ml round bottom flask and 1200g (15M) of sodium hydroxide (NaOH, Samchun Pure Chemical) was added while stirring in a stirrer. The internal temperature of the reactor heated by the exothermic reaction was cooled so as not to exceed 50 °C, and then 3.8 g (0.0079 M) of copper(II) nitrate (Cu(NO 3 ) 2 ·3H 2 O, Samchun PureChemical) was dissolved in 100ml of water (ultrapure water) and added to the reactor. Then 9.7g (0.268M) piperazine (C 4 h 10 N 2 , Sigma Aldrich) was dissolved in 100 ml of water (ultrapure water) and added to the reactor, then stirred at an average stirring rate of 300 rpm for 10 minutes. The temperature of the reactor was raised to 70°C. Then 4ml hydrazine (N 2 h 4 , Samchun Pure Chemical) was mixed with 240ml (0.04M) of water (ultrapure water), and then fed into the reactor at a rate of 4ml / min for 1 hour u...

Embodiment 2

[0084] Example 2: Silver Coating of Copper Nanowires Using Ethylenediamine

[0085] 200 ml of water (ultrapure water) and 0.5 g of copper nanowires prepared using piperazine were added to a 500 ml Erlenmeyer flask and treated at 53 kHz for 10 minutes using an ultrasonic cleaner (Youngjin Corporation Batch Sonicator, SK7210HP) to disperse the copper nanowires . In another beaker, add 0.3 g of silver nitrate (AgNO 3 , JUNETECH) and dissolved in 200ml (0.012M) water (ultrapure water) and added 0.7ml (0.036M) ammonia water (NH 4 OH, Samchun Pure Chemical) to prepare a clear liquid to which 1 ml (0.083M) ethylenediamine (Sigma Aldrich) was added and stirred well for 1 minute. A solution containing silver nitrate, ammonia water, and ethylenediamine was added thereto and stirred at room temperature for 1 hour while stirring the copper nanowire solution at a stirring rate of 300 rpm. When the reaction was completed, the reaction product was washed with 2 L of water (ultrapure water...

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Abstract

The present invention relates to a silver-coated copper nanowire and a preparation method therefor and, more specifically, is characterized by synthesizing a copper nanowire through a chemical method by using piperazine (C4H10N2) and / or hexamethylenediamine (C6H16N2), which are novel copper capping agents, and then coating the same with silver by using a chemical plating method in order to prevent the oxidation of the copper nanowire.

Description

technical field [0001] The present invention relates to a silver-coated copper nanowire and a method for preparing the same, and more particularly to a method for preparing a silver-coated copper nanowire and a silver-coated copper nanowire prepared by said preparation method, said preparation method comprising By chemical means using piperazine (C 4 h 10 N 2 ) and / or hexamethylenediamine (C 6 h 16 N 2 ) to synthesize copper nanowires, and then coat the copper nanowires with silver by using chemical plating method (chemical plating method), thereby preventing the oxidation of copper nanowires, the piperazine (C 4 h 10 N 2 ) and / or hexamethylenediamine (C 6 h 16 N 2 ) is a novel copper capping agent. Background technique [0002] Nanowires are nanomaterials with diameters of nanometer size and lengths of hundreds of nanometers to hundreds of micrometers and have attracted attention as core materials used in manufacturing next-generation nanodevices because they are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/18B82B3/00B22F1/102B22F1/17C09D7/62
CPCB82B3/00B22F9/24C09D7/61C09D7/70C09D5/24H01B1/026C09D7/62B22F1/0547B22F1/102B22F1/17B22F9/18C09D5/32
Inventor 朴翰浯金在河李秀鲁尹国进
Owner BIONEER
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