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Nano-silver preparation method

A technology of nano-silver and silver nitrate methanol, which is applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., to achieve the effects of wide source of raw materials, mild reaction and simple process

Inactive Publication Date: 2016-10-12
苏州巨联环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports at home and abroad that use artemisinin as the reducing agent and protective agent of nano-silver to prepare nano-silver with antibacterial and antimalarial effects.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Dissolve 1g of silver nitrate in 10mL of methanol to prepare a 100g / L silver nitrate solution, then slowly add 2g of artemisinin, stir evenly, and then place it under a UV lamp with a wavelength of 365nm and a power of 50w for 60min to obtain a nano-silver colloidal solution , washed with ethanol, centrifuged and dried to obtain nano silver.

Embodiment 2

[0018] Dissolve 1g of silver nitrate in 10mL of methanol to prepare a 100g / L silver nitrate solution, then slowly add 5g of dihydroartemisinin, stir evenly, and then place it under a UV lamp with a wavelength of 365nm and a power of 50w for 30min to obtain silver nanoparticles The colloidal solution is washed with ethanol, centrifuged and dried to obtain nano silver.

Embodiment 3

[0020] Dissolve 1g of silver nitrate in 10mL of ethanol to prepare a 100g / L silver nitrate solution, then slowly add 10g of artesunate, stir evenly, and then place it under a UV lamp with a wavelength of 365nm and a power of 50w for 10min to obtain nano-silver colloid solution, washed with ethanol, centrifuged and dried to obtain nano silver.

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Abstract

The invention relates to a nano-silver preparation method which comprises the following steps: preparing 1-100 g / L of a silver nitrate methanol or ethanol solution, and then slowly adding an artemisinin-based drug for uniformly stirring; then putting the obtained mixture under an ultraviolet lamp for 5-60 minutes' illumination, so as to obtain a nano-silver colloidal solution, wherein the wave length and the power of the ultraviolet lamp are 365 nm and 50 W respectively; and then rinsing with ethanol as well as performing centrifugation and drying treatment, so as to obtain nano-silver. According to the nano-silver preparation method provided by the invention, artemisinin-based drugs are adopted as reducing agents and protecting agents of nano-silver; the nano-silver preparation method has the characteristics of being simple in process, wide in raw material source, mild in reaction, environmentally friendly and the like; and the prepared nano-silver has double effects of bacteria resistance and malaria resistance.

Description

technical field [0001] The invention belongs to the field of nanometer materials, in particular to a preparation method of nanometer silver. Background technique [0002] Nano-silver has excellent heat transfer, electrical conductivity, surface activity and catalytic properties, and has great application value in the fields of optics, catalysis, microelectronics, biosensing, and antibacterial. The traditional preparation of nano-silver is divided into physical method and chemical method. The physical method has higher requirements on instruments and equipment, and the production cost is expensive. Chemical methods often use hydrazine hydrate, formaldehyde, polyols, organic amines, etc. as reducing agents. Although these reducing agents have high activity, they are harmful to the environment, and the prepared nano-silver is prone to agglomeration. [0003] In recent years, the preparation of nano-silver by green, environmentally friendly, efficient and cheap methods has gra...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y40/00B82Y30/00
CPCB82Y30/00B82Y40/00B22F9/24B22F2999/00B22F1/054B22F2202/11Y02A50/30
Inventor 林泽兵贺民强周裕
Owner 苏州巨联环保有限公司
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