Method for preparing nano sliver wire dispersion liquid controllable in wire diameter and high in length-diameter ratio in batches

A high aspect ratio, nano-silver wire technology, applied in the field of nano-materials, can solve the problems of complex preparation process, low yield, and small nano-wire length and diameter, and achieve the effects of simple preparation process, high conversion efficiency, and increased reaction temperature

Inactive Publication Date: 2016-06-15
HUNAN HAOZHI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

All of the above methods can prepare nano-silver wire materials, but the reaction conditions are strictly controlled, the prep

Method used

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  • Method for preparing nano sliver wire dispersion liquid controllable in wire diameter and high in length-diameter ratio in batches
  • Method for preparing nano sliver wire dispersion liquid controllable in wire diameter and high in length-diameter ratio in batches
  • Method for preparing nano sliver wire dispersion liquid controllable in wire diameter and high in length-diameter ratio in batches

Examples

Experimental program
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Effect test

Embodiment 1

[0041] The preparation process of this embodiment is as follows:

[0042] (1) Dissolve silver nitrate in glycerol to prepare a silver nitrate glycerol solution with a molar concentration of 0.1mol / L for subsequent use;

[0043] (2) Dissolve polyvinylpyrrolidone-K30 (PVP-K30) in glycerol to prepare a glycerol solution with a molar concentration of 0.1mol / L polyvinylpyrrolidone-K30 (PVP-K30) for later use;

[0044] (3) Lithium chloride is dissolved in glycerol to prepare a lithium chloride glycerol solution with a concentration of 50mmol / L for subsequent use;

[0045] (4) Stir and mix 100mL silver nitrate glycerin solution and 200mL polyvinylpyrrolidone-K30 (PVP-K30) glycerol solution to prepare a mixed solution for later use;

[0046] (5) Add 200 μL of lithium chloride glycerin solution into the mixed solution, stir well, then put it in an oven at 120°C, and react for 5 hours to obtain a high aspect ratio silver nanowire dispersion.

[0047] Then, the prepared high aspect rat...

Embodiment 2

[0050] The preparation process of this embodiment is as follows:

[0051] (1) Dissolve silver nitrate in glycerol to prepare a silver nitrate glycerol solution with a molar concentration of 0.1mol / L for subsequent use;

[0052] (2) Dissolve polyvinylpyrrolidone-K60 (PVP-K60) in glycerol to prepare a glycerol solution with a molar concentration of 0.1mol / L polyvinylpyrrolidone-K60 (PVP-K60) for use;

[0053] (3) Sodium chloride is dissolved in glycerol to prepare a sodium chloride glycerol solution with a concentration of 50mmol / L for subsequent use;

[0054] (4) Stir and mix 100mL silver nitrate glycerin solution and 200mL polyvinylpyrrolidone-K60 (PVP-K60) glycerol solution to prepare a mixed solution for later use;

[0055] (5) Add 1000 μL of sodium chloride glycerin solution into the mixture, stir well, then put it in an oven at 130°C, and react for 10 hours to obtain a dispersion of silver nanowires with high aspect ratio.

[0056] Then, the prepared high aspect ratio na...

Embodiment 3

[0059] The preparation process of this embodiment is as follows:

[0060] (1) Dissolve silver nitrate in glycerol to prepare a silver nitrate glycerol solution with a molar concentration of 0.1mol / L for subsequent use;

[0061] (2) Dissolve polyvinylpyrrolidone-K30 (PVP-K30) in glycerol to prepare a glycerol solution with a molar concentration of 0.1mol / L polyvinylpyrrolidone-K30 (PVP-K30) for later use;

[0062] (3) Dissolve ferric chloride in ethylene glycol, and prepare a ferric chloride ethylene glycol solution with a concentration of 50mmol / L for subsequent use;

[0063] (3`), sodium chloride is dissolved in ethylene glycol, is mixed with the sodium chloride ethylene glycol solution that concentration is 100mmol / L, for subsequent use;

[0064] (4) Stir and mix 100mL silver nitrate glycerin solution and 200mL polyvinylpyrrolidone-K30 (PVP-K30) glycerol solution to prepare a mixed solution for later use;

[0065] (5) Add 150 μL ferric chloride ethylene glycol solution and...

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Abstract

The invention discloses a method for preparing nano sliver wire dispersion liquid controllable in wire diameter and high in length-diameter ratio in batches. The method comprises the preparation steps that (1), a silver salt alcoholic solution with the molar concentration of 0.005-0.5 mol/L is prepared; (2), a template agent alcoholic solution with the molar concentration of 0.005-0.5 mol/L is prepared; (3), a halide alcoholic solution with the concentration of 10-100 mmol/L is prepared; (4), mixed liquid with the molar ratio of PVP to silver being 0.8-10 or 1-4 is prepared; and (5), complex mixed liquid with the molar concentration of halide being 0.1-200 mmol/L is prepared and heated to 90-200 DEG C to react for 0.5-14 hours, and the nano sliver wire dispersion liquid high in length-diameter ratio is obtained. The method has the characteristics that the cost is low, the process is simple and easy to implement, the wire diameter is controllable, the length-diameter ratio is high, the nano sliver wire dispersion liquid can be prepared in batches, and the method is suitable for preparation of the nano sliver wire dispersion liquid high in length-diameter ratio.

Description

technical field [0001] The invention relates to the technical field of nanometer materials, in particular to a method for batch-preparing dispersion liquid of nano-silver wires with high aspect ratio with controllable wire diameters. Background technique [0002] Nanomaterials have become one of the rapidly developing emerging materials because of their many unique properties. As an important field of nanomaterials, the research of metal nanomaterials has attracted much attention due to their excellent thermal and electrical properties. Among them, noble metal (gold, silver, platinum) nanomaterials have special optical properties due to their unique physical and chemical properties. Properties, thermodynamic properties, physical and chemical properties have become the focus of research in recent years. Silver is the metal with the best conductivity among precious metals, and silver has many excellent properties (such as thermal conductivity, catalysis, antibacterial, biocom...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 谢喜明
Owner HUNAN HAOZHI TECH
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