Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of preparation method of silver nanowire tube with controllable size

A silver nanowire and size technology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve environmental problems, low efficiency, and lack of large-scale regulation of the aspect ratio of silver nanowires and other problems, to achieve the effect of large-scale production, simple operation process and high success rate

Inactive Publication Date: 2018-07-03
SOUTHWEAT UNIV OF SCI & TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the wet chemical synthesis method can effectively prepare silver nanowires, most of the chemical synthesis process involves the use of non-environmentally friendly organic solvents with complex follow-up processing, and the preparation process uses many organic and inorganic additives, which is likely to cause environmental problems. At the same time, there is a lack of effective measures for large-scale regulation of the aspect ratio of silver nanowires in the existing methods
However, the preparation of silver nanotubes mainly relies on the template method, which is less efficient.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of preparation method of silver nanowire tube with controllable size
  • A kind of preparation method of silver nanowire tube with controllable size
  • A kind of preparation method of silver nanowire tube with controllable size

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of the size-controllable silver nanowire tube of the present invention specifically comprises the following steps:

[0034] (1) Prepare an aqueous solution of soluble silver salts; soluble silver salts are silver fluoride (AgF), silver nitrate (AgNO 3 ), or silver perchlorate (AgClO 4 ), the aqueous solution concentration of soluble silver salt is 1~20mmol / L.

[0035] (2) Prepare an aqueous solution by heating the small molecular heterocyclic compound in a water bath; the small molecular heterocyclic compound is a five-membered or six-membered ring heterocyclic compound containing one or two heteroatoms, such as melamine, pyridine, imidazole or nicotinamide , wherein pyridine is aminopyridine, cyanopyridine, etc., and imidazole is nitroimidazole. The water-bath dissolution temperature is the hydrothermal dissolution temperature (that is, the dissolution temperature in water) of each heterocyclic compound, such as 60° C. for melamine. The concen...

Embodiment 1

[0040] First get 0.4246g of silver nitrate to prepare 250mL of its aqueous solution; get 0.124g of melamine and prepare 100mL of its aqueous solution by heating in a water bath at 60°C; The molar ratio of silver nitrate is 10:5, magnetically stirred for 5min, after mixing evenly, transferred to a plastic container, placed in a low-temperature freezing environment at -20°C for 10h, then taken out and allowed to stand to restore the system temperature to room temperature naturally; The reaction product was subjected to centrifugation and washed with water and ethanol five times each, the centrifugation condition was 8000r, 20min, dispersed with ethanol to obtain the silver nanowire tube shrinkage solution, and finally the silver nanowire tube concentrate solution was vacuum-dried to obtain the silver nanowire tube powder , the vacuum drying temperature is 60°C, and the drying time is 10h.

[0041] Such as figure 1Shown is the XRD spectrum of the silver nanowire in Example 1 of ...

Embodiment 2

[0043] First take 0.0634g of silver fluoride to prepare 500mL of its aqueous solution; take 0.0941g of 3-aminopyridine and prepare 100mL of its aqueous solution at normal temperature; then add 100mL of silver fluoride aqueous solution to 100mL of prepared 3-aminopyridine solution, so that The molar ratio of the reactant 3-aminopyridine to silver fluoride is 10:1, magnetically stirred for 3 minutes, mixed evenly, transferred to a plastic container, placed in a low-temperature freezing environment at -20°C for 18 hours, then taken out and allowed to stand naturally The temperature of the system was restored to room temperature; then the reaction product was centrifuged, washed with water, and washed with ethanol five times each. The centrifugal condition was 10,000r for 5 minutes, and the silver nanowire tube was dispersed with ethanol to obtain the silver nanowire tube shrinkage solution. Finally, the silver nanowire tube concentrate solution was subjected to vacuum Dry to obtai...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparing method for a silver nano wire pipe with the controllable size. According to the preparing method, only silver is adopted as a seed crystal, a micromolecule heterocyclic compound is adopted as an inducing agent, the reactant matching is controlled, and the silver nano wire pipe with the controllable length-diameter ratio is obtained through the reaction at the low temperature. According to the method, operation is simple and convenient, the product purity is high, the success rate is high, and repeatability is high. A material obtained through preparing has the beneficial effects that the length-diameter ratio is high, and the size is controllable and can be applied to the fields of chemical and electrochemical catalysis, chemical sensors, biomolecule sensors, optical information storage, printing electronics, electromagnetic shielding, solar batteries, touch control screens and the like. In addition, in the preparing method, the formula is simple, a contaminative organic solvent and a contaminative surface active agent are not used, and environment friendliness is achieved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a method for preparing a size-controllable silver nanowire tube. Background technique [0002] Silver nanomaterials, especially silver nanowire tubes, have unique optical, electromagnetic, mechanical, and catalytic properties, coupled with the tunneling effect and electron transfer capabilities of tubular materials due to their special structures, making them extremely important in many fields. function and application. In particular, silver nanowire tubes have high conductivity, good flexibility, good film uniformity, and simple processing and production, and can be effectively used in transparent conductive films in touch products. Electrodes have also received extensive attention. [0003] At present, the methods for synthesizing silver nanowires mainly include template method and wet chemical synthesis method. There are two ways of template method: hard temp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B22F9/24B82Y30/00B82Y40/00
CPCB22F9/24B82Y30/00B82Y40/00
Inventor 段涛陈鑫姚卫棠竹文坤易早
Owner SOUTHWEAT UNIV OF SCI & TECH