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Silver nanowire and environmental-friendly macroscopic preparation method thereof

A technology of silver nanowires and silver salts, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of difficult large-scale production, limited output, high cost, etc., and meet the conditions and raw materials Environmentally friendly, easy to obtain, and reduced reaction costs

Pending Publication Date: 2019-06-21
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of using the template method to prepare nanowires is that the shape and size of the nanowires can be strictly controlled, but the cost is high and the output is limited, which is difficult to adapt to large-scale industrial production.
At present, the preparation methods of silver nanowires are mostly solution methods, such as wet heat chemical method, seed crystal growth method, etc., but these methods will inevitably add some organic alcohols, dispersion aids or halide etchant, etc. Substance, complex reaction process, high cost, serious environmental pollution

Method used

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  • Silver nanowire and environmental-friendly macroscopic preparation method thereof
  • Silver nanowire and environmental-friendly macroscopic preparation method thereof
  • Silver nanowire and environmental-friendly macroscopic preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Collect the leaves of Pinus tabulaeformis, wash them with water, ethanol, and acetone in sequence, and dry them overnight in an oven at 60°C;

[0038] Weigh 3 mg of silver nitrate, dissolve it in 30 mL of water, stir well to dissolve it completely;

[0039] The above-mentioned silver nitrate solution was transferred to a 50mL reaction kettle, and 3mg of dried Pinus tabulaeformis leaves were added;

[0040] Seal the above reaction kettle, place it in a hydrothermal oven, set the reaction temperature to 120°C, and the reaction time to 1 hour;

[0041] After the reaction is finished and the temperature is naturally lowered, the reaction product is collected to obtain silver nanowires, and its SEM characterization is shown in figure 1

Embodiment 2

[0043] Collect Cypress leaves, wash them with water, ethanol, and acetone in sequence, and dry them overnight in an oven at 65°C;

[0044] Weigh 160 mg of silver nitrate, dissolve it in 160 mL of water, stir well to dissolve it completely;

[0045] The above-mentioned silver nitrate solution was transferred to a 200mL reaction kettle, and 16mg of dried Cypress leaves were added;

[0046] Seal the above reaction kettle, place it in a hydrothermal oven, set the reaction temperature to 160°C, and the reaction time to be 3 hours;

[0047] After the reaction is finished and the temperature is naturally lowered, the reaction product is collected to obtain silver nanowires, and its SEM characterization is shown in figure 2 .

Embodiment 3

[0049] Collect the leaves of Magnolia magnolia, wash them with water, ethanol, and acetone in turn, and dry them in an oven at 50°C overnight

[0050] Weigh 500mg of silver nitrate, dissolve it in 300mL of water, stir well to dissolve it completely;

[0051] The above-mentioned silver nitrate solution was transferred to a 500mL reaction kettle, and 100mg of dried Magnolia magnolia leaves were added

[0052] Seal the above reaction kettle, place it in a hydrothermal oven, set the reaction temperature to 180°C, and the reaction time to be 8 hours

[0053] After the reaction is finished and the temperature is naturally lowered, the reaction product is collected to obtain silver nanowires, and its SEM characterization is shown in image 3 .

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Abstract

The invention relates to a silver nanowire and an environmental-friendly macroscopic preparation method thereof, and especially discloses a preparation method of the silver nanowire. The preparation method comprises the following steps of 1) obtaining dry plant leaves; 2) preparing a silver salt aqueous solution; 3) adding the dried plant leaves in the silver salt aqueous solution to perform closed hydrothermal reaction; 4) removing the whole plant leaves, and separating, cleaning and drying bottom sediments obtained through reaction, thereby obtaining the silver nanowire. The invention further discloses the silver nanowire prepared according to the preparation method. The preparation method of the silver nanowire is simple in process, and the silver nanowire is low in cost and environmental-friendly.

Description

technical field [0001] The invention relates to the field of silver nanomaterial preparation, and specifically discloses a silver nanowire and a green macro preparation method thereof. Background technique [0002] In recent years, one-dimensional nanomaterials such as nanowires, nanofibers, nanorods, nanobelts, etc., have been widely used in nanoelectronic devices, biosensors, nanoprobes, etc. due to their unique electrical, thermal, optical, and magnetic properties. Nanochemistry and nanocomposites. Among them, metallic silver nanowires have attracted great attention due to their excellent electrical and thermal conductivity and antibacterial properties, and their applications are extensive, such as surface-enhanced Raman spectroscopy, catalysts, sensors, biomedicine, polarizing devices, photonic crystals, lubrication materials and dielectric materials, etc. [0003] At present, there are many methods for preparing silver nanowires, and the representative methods include...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y40/00B82Y30/00
Inventor 孙蓉叶晃青赵涛朱朋莉梁先文
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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