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High-length-to-diameter-ratio solid-walled hollow gold/gold-silver nanotube and manufacturing method thereof

A high aspect ratio, silver nanowire technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problem of high consumption of solid structures, easy cracking of nanotubes, limited application range, etc. problems, to achieve the effect of easy operation of product component content, high wear resistance and strong controllability

Active Publication Date: 2014-08-20
江苏纳美达光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent 101503766B discloses a method for preparing gold nanomaterials with a hollow porous tubular structure by using HAuCl4 (Au(Ⅲ)) as a gold source through replacement and other methods. In this technical solution, the prepared nanotubes are usually easy to break. Low aspect ratio, many defects, poor mechanical resistance
In addition, Chinese patent 101845646B discloses a method for preparing gold nanowires by using an alternating current electrodeposition process, but its solid structure requires more gold than the tubular structure.
Due to the requirements of flexible transparent conductive films on key factors such as high transparency, high conductivity, high mechanical properties, long life, and low cost of nanowire tubes, the preparation methods of the prior art have severely limited its application range.

Method used

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  • High-length-to-diameter-ratio solid-walled hollow gold/gold-silver nanotube and manufacturing method thereof
  • High-length-to-diameter-ratio solid-walled hollow gold/gold-silver nanotube and manufacturing method thereof
  • High-length-to-diameter-ratio solid-walled hollow gold/gold-silver nanotube and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Wash AuCl three times with chloroform to remove a small amount of Au(Ш), then dry it under vacuum, and finally dissolve it in an appropriate amount of DMF to make a solution with a concentration of 10mM for use. Take 1.75mL (about 10mM) of the prepared silver nanowires and disperse them in 50mL PVP (1mg / mL) aqueous solution, add a certain amount of solubilizer, mix evenly with magnetic stirring, heat to 120°C, and stabilize for 10min. Then take 1 mL of the above-mentioned treated AuCl solution in DMF, inject it into the solution with a syringe pump under the condition of magnetic stirring, the injection speed is 45 mL / h, and then heat for 10 min until the color of the reaction solution tends to be stable. After cooling to room temperature, the obtained sample was centrifuged, and then washed several times with deionized water to remove PVP and NaCl, etc., to obtain hollow solid-walled gold-silver alloy nanotubes, in which the mass fraction of gold was about 13%. Such as...

Embodiment 2

[0038] Wash AuCl three times with chloroform to remove a small amount of Au(Ш), then dry it under vacuum, and finally dissolve it in an appropriate amount of DMF to make a solution with a concentration of 10mM for use. Take 1.75mL (about 10mM) of the prepared silver nanowires and disperse them in 50mL PVP (1mg / mL) aqueous solution, add a certain amount of solubilizer, mix evenly with magnetic stirring, heat to 120°C, and stabilize for 10min. Then take 10 mL of the above-mentioned treated AuCl solution in DMF, inject it into the solution with a dual-channel syringe pump under the condition of magnetic stirring, the injection speed is 45 mL / h, and then heat for 10 min until the color of the reaction solution tends to be stable. After cooling to room temperature, the obtained sample was centrifuged, and then rinsed several times with deionized water to remove PVP and CTAB, etc., to obtain hollow solid-walled gold-silver bimetallic nanotubes, wherein the mass fraction of gold was a...

Embodiment 3

[0041] Wash AuCl three times with chloroform to remove a small amount of Au(Ш), then dry it under vacuum, and finally dissolve it in an appropriate amount of DMF to make a solution with a concentration of 10mM for use. Take 1.75mL (about 10mM) of the prepared silver nanowires and disperse them in 50mL PVP (1mg / mL) aqueous solution, add a certain amount of solubilizer, mix evenly with magnetic stirring, and then heat to 120°C for 10min to stabilize. Then take 22 mL of the above-mentioned treated AuCl solution in DMF, inject it into the solution with a dual-channel syringe pump under the condition of magnetic stirring, the injection speed is 45 mL / h, and heat for 10 min until the color of the reaction solution tends to be stable. After cooling to room temperature, the obtained sample was centrifuged, and then washed several times with deionized water to remove PVP and NaCl, etc., to obtain hollow solid-walled gold nanotubes. Wherein the mass fraction of gold is 100%, such as F...

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Abstract

The invention discloses a high-length-to-diameter-ratio solid-walled hollow gold / gold-silver nanotube and a controllable synthesis manufacturing method of the nanotube. According to the method, a high-length-to-diameter-ratio silver nanowire serves as a template; as Au (I) salt is adopted as a gold source in an optimized mode for replacement reaction, the adjustability of the replacement reaction rate and the precise controllability of experiments can be improved; in this way, the wall thickness of the nanotube and the flatness of the surface of the nanotube can be controlled more accurately, and the situation that a porous wall and a uneven surface are produced, or the nanotube collapses or fractures is avoided. The high-length-to-diameter-ratio solid-walled hollow gold / gold-silver nanotube has better conductivity, oxidation resistance, strength, bending resistance, light transmittance and abrasion resistance.

Description

[0001] technical field [0002] The invention belongs to the field of nanometer materials, and relates to a hollow solid-walled gold / gold-silver nanotube with a high aspect ratio and a preparation method for its controllable synthesis. [0003] Background technique [0004] In recent years, indium tin oxide (ITO) transparent conductive films have been widely used in the new generation of touch products, but they have complex processing procedures, high energy consumption, high brittleness, poor flexibility, scarce resources, high film resistance, and high power consumption. , affecting the long-term use of mobile devices and other shortcomings. At present, silver nanowires can provide better durability, high flexibility, low resistance and superior scribing than traditional ITO due to its advantages of high strength, good conductivity, high transparency, low price, and convenient use. And other durability, the benefits can reach several times more than ITO, becoming a rare...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00C23C18/42B82Y30/00B82Y40/00
Inventor 王博范江峰刘腾蛟
Owner 江苏纳美达光电科技有限公司
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