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High-concentration fast preparation method for silver nanowires

A silver nanowire, high-concentration technology, applied in the field of high-concentration and rapid preparation of silver nanowires, to achieve high yield, good stability, and rapid response

Inactive Publication Date: 2011-01-05
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[Chen, C., et al.Nanotechnology.2007.18, 115612-115619; Wiley, B., Y.Sun, and Y.Xia.Langmuir.2005, 14, 8077-8080] At present, the preparation of silver nanowires is mostly in It is carried out at a lower molar concentration of silver ions (<0.1M), and the reaction time needs to be 1~2h

Method used

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  • High-concentration fast preparation method for silver nanowires

Examples

Experimental program
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Embodiment 1

[0036] A closed 100ml three-necked flask equipped with a condensing reflux device was filled with argon and placed in an oil bath at 180°C; 10ml of ethylene glycol was added and preheated with a magnetic stirrer for 30min; then the molar concentration of 10ml was 0.3M The ethylene glycol solution of silver nitrate was added to the preheated ethylene glycol solution, and the addition rate was controlled to 50ml / min. At the same time, 10ml of polyvinylpyrrolidone glycol solution with a molar concentration of 0.3M was added. The alcohol solution contains copper chloride with a molar concentration of 0.05 mM, and the addition rate is controlled to be 1 ml / min; the reaction time is 15 minutes; the mother liquor of silver nanowires is obtained by cooling to room temperature; after the reactants are naturally cooled, the mother liquor of silver nanowires is transferred to Three 50ml centrifuge tubes, add a solution of 10:1 volume ratio of acetone to ethanol; ultrasonic for 1min to mix ...

Embodiment 2

[0038] A closed 100ml three-necked flask equipped with a condensing reflux device was filled with argon and placed in an oil bath at 180°C; 10ml of ethylene glycol was added and preheated with a magnetic stirrer for 30min; then the molar concentration of 10ml was 0.3M The ethylene glycol solution of silver nitrate was added to the preheated ethylene glycol solution, and the addition rate was controlled to 50ml / min. At the same time, 10ml of 0.5M polyvinylpyrrolidone glycol solution with a molar concentration of 0.5M was added. The alcohol solution contains copper chloride with a molar concentration of 0.05 mM, and the addition rate is controlled to 10 ml / min; the reaction time is 30 minutes; the mother liquor of silver nanowires is obtained by cooling to room temperature; after the reactants are naturally cooled, the reaction mother liquor is transferred to 3 Add a 50ml centrifuge tube with a volume ratio of acetone to ethanol of 5:1; sonicate for 1 min to mix well and centrifug...

Embodiment 3

[0040] A closed 100ml three-necked flask equipped with a condensing reflux device was filled with argon and placed in an oil bath at 180°C; 10ml of ethylene glycol was added and preheated with a magnetic stirrer for 30min; then the molar concentration of 10ml was 0.3M The ethylene glycol solution of silver nitrate was added to the preheated ethylene glycol solution, and the addition rate was controlled to 50ml / min; at the same time, 10ml of polyvinylpyrrolidone ethylene glycol solution with a molar concentration of 1.5M was added. The alcohol solution contains copper chloride with a molar concentration of 0.05 mM, and the addition rate is controlled to 5 ml / min; the reaction time is 15 minutes; the mother liquor of silver nanowires is obtained by cooling to room temperature; after the reactants are naturally cooled, the reaction mother liquor is transferred to 3 Add a 50ml centrifuge tube with a solution of 10:1 volume ratio of acetone and ethanol; ultrasonicate for 1min to mix ...

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Abstract

The invention discloses a high-concentration fast preparation method for silver nanowires. The method comprises the following steps of: under the protection of inert gas, adding high-concentration silver nitrate glycol solution and polymer glycol solution into pre-heated glycol solution, and adding copper chloride serving as control agent at the same time so as to obtain mother liquor of the silver nanowires; and performing centrifugal separation and purification on the mother liquor so as to obtain pure silver nanowires diffused in ethanol solution. The high-concentration fast preparation method for silver nanowires has the advantages of high efficiency, low cost, simple process, high repeatability, high stability, fast reaction, high yield and adjustable and controllable shape and size of the silver nanowires, and makes the large-scale fast preparation and the application and research of the silver nanowires possible.

Description

Technical field [0001] The invention relates to nano material preparation technology, in particular to a high-concentration rapid preparation method of silver nanowires. Background technique [0002] One-dimensional metal nanomaterials, including nanowires, nanorods, nanofibers, nanobelts, etc., have unique optical, electrical, magnetic and other physical properties and their chemical properties, and are widely used in nanoelectronic devices, nanophotonic devices, and biosensors , Chemical testing, nanocomposite materials and other fields. Silver nanowires have attracted much attention and are widely used in related fields due to their excellent thermal and electrical conductivity and outstanding chemical stability. In particular, the rapid development of the solar energy industry has increasingly demanded silver nanowire thin-film electrodes. Therefore, the rapid preparation of silver nanowires plays an important role in the preparation and application of nanomaterials. At pre...

Claims

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Application Information

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IPC IPC(8): B22F9/24
Inventor 李晓晓王立俞豪杰颜光清
Owner ZHEJIANG UNIV
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