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A kind of preparation method of silver nanowire

A technology of silver nanowires and silver nitrate, applied in nanotechnology and other directions, can solve the problems of cumbersome template technology, easy damage to nanomaterials, unfavorable single operation or measurement, etc., and achieves good industrialization prospects, simple and easy-to-control preparation methods, and industrialization. High-value effects

Active Publication Date: 2018-07-20
NANJING XINYIHAO CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the hard template electrochemical method requires a prefabricated template. The quality and quantity of the pores on the template determine the quality and quantity of the obtained nanomaterials, and the subsequent removal of the template is cumbersome and easy to damage the nanomaterials. The prepared nanomaterials Also prone to clumping together, not conducive to single manipulation or measurement

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  • A kind of preparation method of silver nanowire
  • A kind of preparation method of silver nanowire
  • A kind of preparation method of silver nanowire

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Experimental program
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Embodiment 1

[0019] The preparation method of the silver nanowire of embodiment 1, comprises the following steps:

[0020] (1) Take by weighing 0.5g silver nitrate and 0.8g sodium citrate and mix and disperse uniformly in 800g water, obtain solution A; Take by weighing 16g oxalic acid and mix and disperse uniformly in 800g water, obtain solution B; Then solution A and solution B Mix and stir for 0.5 minutes at a volume ratio of 35:1 to prepare a solution C containing silver nanoparticles with a particle size of 2-6 nm, and use the solution C as a seed crystal;

[0021] (2) 5 mL of silver nitrate solution of 3% mass percentage concentration, 8 mL of ascorbic acid solution of 20% mass percentage concentration and 120 mL of CTAB solution of 30% mass percentage concentration were prepared respectively, and these three kinds of solutions were mixed to obtain solution D;

[0022] (3) Mix 4mL of solution C, 80mL of solution D and 1mL of sodium hydroxide solution at a concentration of 25% by mass,...

Embodiment 2

[0024] The preparation method of the silver nanowire of embodiment 2 comprises the following steps:

[0025] (1) Take by weighing 0.4g silver nitrate and 0.7g sodium citrate and mix and disperse uniformly in 600g water, obtain solution A; Take by weighing 12g oxalic acid and mix and disperse uniformly in 700g water, obtain solution B; Then solution A and solution B Mix and stir for 1 minute at a volume ratio of 40:1 to prepare a solution C containing silver nanoparticles with a particle size of 2-6 nm, and use the solution C as a seed crystal;

[0026] (2) 4 mL of silver nitrate solution of 2% mass percentage concentration, 6 mL of ascorbic acid solution of 15% mass percentage concentration and 100 mL of SDS solution of 20% mass percentage concentration were prepared respectively, and these three solutions were mixed to obtain solution D;

[0027] (3) Mix 4mL of solution C, 90mL of solution D and 1mL of sodium hydroxide solution at a concentration of 25% by mass, and place it ...

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Abstract

The invention discloses a method for preparing a silver nanowire. Silver nitrate, sodium citrate and oxalic acid are adopted as raw materials, and a solution containing silver nanoparticles with the particle size of 2 nm to 6 nm is firstly prepared as seed crystals; and then the silver nitrate is adopted as a raw material, and finally the silver nanowire is prepared with the assistance of template agent CTAB or SDS. The method is simple and easy to control, no environmental pollution is caused, the preparation efficiency is high, and the yield of the silver nanowire reaches 95% or above. The diameter of the prepared silver nanowire ranges from 50 nm to 800 nm, and the length of the prepared silver nanowire ranges from 1 micrometer to 100 micrometers. The ingredient of the silver nanowire is pure silver, the product quality is good, and the rate of finished products is high. The silver nanowire is provided with a regular crystal structure and has the large length-diameter ratio and large specific surface area, and the thickness and length of the silver nanowire can be regulated and controlled according to reaction time and the concentration of the silver nitrate solution. According to the method, the production cost of the silver nanowire can be greatly reduced, and the prepared silver nanowire is expected to achieve potential application in the fields of design of an advanced catalyst, assembling of nanodevices, microscopic conduction, advanced optics, synthesis of an electric material and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of one-dimensional materials, in particular to a preparation method of silver nanowires. Background technique [0002] One-dimensional materials include nanowires, nanotubes, nanorods, etc. Due to their microscopic one-dimensional structure and large specific surface area, one-dimensional materials have broad application prospects in the fields of catalysis, environmental protection and other functional material assembly. become one of the main research hotspots. Silver material itself has good electrical conductivity and has a wide range of applications in the fields of optics, electrochemistry, catalysis, adsorption and separation, and the synthesis of silver nanowires has become a research hotspot in the field of materials in recent years. [0003] In the past ten years, a large number of methods for preparing silver nanowires have been reported internationally, which are mainly divided in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 陈平程晓丹陈明富
Owner NANJING XINYIHAO CHEM TECH