A method for preparing silver nanowires by microwave alcohol reduction

A technology of silver nanowire and microwave, which is applied in the field of preparation of silver nanowire, can solve the problem that the transparent conductive film is difficult to achieve haze, and achieve the effects of small diameter, good repeatability and simple process flow

Active Publication Date: 2017-02-01
合肥微晶材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to achieve a haze of less than 1% for transparent conductive films prepared with silver nanowires of this diameter

Method used

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  • A method for preparing silver nanowires by microwave alcohol reduction
  • A method for preparing silver nanowires by microwave alcohol reduction
  • A method for preparing silver nanowires by microwave alcohol reduction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Take 0.3g of silver nitrate, 100mL of propylene glycol, and 3mg of cetyltrimethylammonium bromide, mix them uniformly, and then perform microwave treatment under 100w microwave conditions for 2 minutes to obtain the precursor mixture A.

[0035] (2) Take 300 mL of alcohol reducing agent propylene glycol, 1.5 g of protective agent povidone, 3 mg of surfactant tetrabutylammonium chloride, and 3 mg of inorganic salt ferric nitrate, and stir and mix them evenly to obtain mother liquor B.

[0036] (3) Keep the mother liquid B at 120°C and keep it stable. Use a metering pump to accurately measure and inject the precursor mixed liquid A into the mother liquid B at a rate of 1% of the total volume of the precursor mixed liquid A into the mother liquid B per minute. In the process, the solution was reacted to grayish yellow to stop the reaction, and silver nanowires were obtained.

[0037] figure 1 It is a scanning electron microscope picture of the silver nanowires prepare...

Embodiment 2

[0039] In this example, silver nanowires were prepared in the same manner as in Example 1, except that microwave treatment was not performed in step (1). image 3 It is a scanning electron microscope picture of the silver nanowires prepared in this example. It can be seen that the silver nanowires obtained in this example have a diameter of 76-106 nm.

Embodiment 3

[0041] (1) Take 0.3g of silver nitrate, 100mL of glycerol, and 9mg of tetrabutylammonium chloride, mix them uniformly, and then perform microwave treatment under 100w microwave conditions for 2 minutes to obtain the precursor mixed solution A.

[0042] (2) Take 300 mL of alcohol reducing agent propylene glycol, 1.5 g of protective agent povidone, 9 mg of surfactant tetrabutylammonium chloride, and 9 mg of inorganic salt ferric nitrate, and stir and mix them evenly to obtain mother liquor B.

[0043] (3) Keep the mother liquid B at 120°C and keep it stable. Use a metering pump to accurately measure and inject the precursor mixed liquid A into the mother liquid B at a rate of 1% of the total volume of the precursor mixed liquid A into the mother liquid B per minute. In the process, the solution was reacted to grayish yellow to stop the reaction, and silver nanowires were obtained. Figure 4 It is a scanning electron microscope image of the silver nanowires prepared in this examp...

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Abstract

The invention discloses a method for preparing a silver nanowire through reduction of microwave alcohol. The method comprises the following steps that silver ion inorganic salt, protective agents and surface active agents are mixed evenly, and precursor mixed liquor A is obtained after microwave processing of 100-300 w is conducted for 0.1-5 min; alcohol reducing agents, protective agents, surface active agents and inorganic salt are mixed evenly, and mother liquor B is obtained; and the mother liquor B is kept warm at 60-140 DEG C, then the precursor mixed liquor A is injected into the mother liquor B, and the silver nanowire is obtained after a reaction is completed. The high-quality silver nanowire with the diameter being 25-120 nm, the length being 20-300 micrometers and the length-diameter ratio being more than 800 can be obtained through processing and optimization of the precursor mixed liquor.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and in particular relates to a preparation method of silver nanowires. Background technique [0002] At present, metal nanomaterials are being studied intensively because of their unique optical, electrical, magnetic, and thermal properties, as well as their broad application prospects in the field of microelectronics, computers, communications, and other electronic equipment manufacturing. For example, the hottest research at present is to prepare transparent conductive films with silver nanowires as raw materials to replace traditional indium tin oxide (ITO) transparent electrode materials, which have the advantages of low consumption, low price, and good performance, and can also be widely It is widely used in various transparent conductive materials, such as solar cells, flexible touch screens, bendable LEDs, etc. [0003] When preparing a transparent conductive film contain...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24
Inventor 吕鹏张梓晗陶豹
Owner 合肥微晶材料科技有限公司
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