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Preparation method for copper nanowire

A copper nanowire and copper source technology, which is applied in the field of preparation of new functional nanomaterials, can solve the problems of high preparation cost, difficulty in recycling and reuse, and achieve the effect of reducing preparation cost

Active Publication Date: 2013-05-08
HENAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because the high-concentration lye used is difficult to recycle and reuse, the preparation cost is very high (Chem Mate, 2010, 22 (4), 1282-1284)

Method used

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  • Preparation method for copper nanowire
  • Preparation method for copper nanowire
  • Preparation method for copper nanowire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Add 300ml of 7M NaOH solution into a 500mL flask, then add 3g of triethylenetetramine, 1.5g of Cu(OH) under slow stirring 2 React with 1.5ml 80% (mass fraction, the same below) aqueous solution of hydrazine hydrate in a water bath at 80°C for 1 hour at constant temperature. The solution gradually changed from blue to brownish-red, and a large amount of solids floated on the liquid surface. The flask was taken out from the water bath, cooled to room temperature, filtered to obtain a brownish-red solid, and washed 3 times with 5% hydrazine hydrate aqueous solution, and then 60 °C Dry under vacuum to obtain the copper nanowire product.

[0018] The XRD pattern of copper nanowires is shown in figure 1 , as can be seen from the figure, the XRD result shows that the prepared product is metallic copper with a pure face-centered cubic structure, and there is no diffraction peak of cupric hydroxide, cuprous oxide or cupric oxide, indicating that the product prepared by this met...

Embodiment 2

[0022] Add 300ml of 7M NaOH solution into a 500mL flask, then add 1g of triethylenetetramine, 1.5g of Cu(OH) under slow stirring 2 and 1.5ml of 80% hydrazine hydrate aqueous solution, and reacted at constant temperature in a water bath at 80°C for 1 hour. The solution gradually changed from blue to brownish-red, and a large amount of solids floated on the liquid surface. The flask was taken out from the water bath, cooled to room temperature, filtered to obtain a brownish-red solid, and washed 3 times with 5% hydrazine hydrate aqueous solution, and then 60 °C Dry under vacuum to obtain the copper nanowire product. The prepared nano copper wire has a length of 5-20um and a diameter of 50-100nm.

Embodiment 3

[0024] Add 300ml of 7M NaOH solution into a 500mL flask, then add 9g of triethylenetetramine, 1.5g of Cu(OH) under slow stirring 2 and 1.5ml of 80% hydrazine hydrate aqueous solution, and reacted at constant temperature in a water bath at 80°C for 1 hour. The solution gradually changed from blue to brownish-red, and a large amount of solids floated on the liquid surface. The flask was taken out from the water bath, cooled to room temperature, filtered to obtain a brownish-red solid, and washed 3 times with 5% hydrazine hydrate aqueous solution, and then 60 °C Dry under vacuum to obtain the copper nanowire product. The prepared nano copper wire has a length of 5-20um and a diameter of 50-100nm.

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Abstract

The invention belongs to the technical field of novel function nanometer material preparation, and discloses a preparation method for a copper nanowire. Reducing agent is added to copper source on the premise that morphology control agent and chemical potential control agent are exist in water solution, and the copper nanowire are obtained after separation and under the condition that reaction is carried out for at least one hour in temperature of 25 DEG C to 100 DEG C, wherein the copper source is one or combination of copper hydroxide and copper oxide, the morphology control agent is one kind or combination of more than two kinds of polyethylene polyamine, the chemical potential control agent is one or combination of sodium hydroxide and potassium hydroxide, and the reducing agent is one or combination of hydrazine hydrate and hydroxylamine. The preparation method for the copper nanowire has the advantages of being simple in technology and device, cheap and easy-getting in raw materials, low in cost, high in productivity, suitable for large-scale industrial production, and the like. Prepared copper nanometers are uniform in diameter, diameters and lengths of the copper nanometers can be controlled through changing concentration of the morphology control agent and concentration and reaction temperature of the copper resource.

Description

technical field [0001] The invention belongs to the technical field of preparation of novel functional nanometer materials, and in particular relates to a preparation method of copper nanowires. Background technique [0002] Copper nanowires have a wide range of applications in the fields of electronic materials, conductive materials, catalysis, and polymer-based self-lubricating materials. The literature shows that copper nanowires can replace expensive silver and rare metal indium as a flexible transparent conductive electrode material, and have great application potential in the new generation of solar cells, displays and other fields (Aaron R. Rathmell et al, Adv. Mater. 2010, 22, 3558–3563). The premise of the practical application of copper nanowires is the successful development of its large-scale preparation technology. The preparation of copper nanowires usually adopts a template method. For example, Neumann, Rd et al. used anodized aluminum oxide as a template to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24C30B7/14C30B29/02C30B29/62
Inventor 张治军张晟卯张玉娟
Owner HENAN UNIVERSITY
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