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Method for preparing silver nano-particles with amino-pillar [5] arene as stabilizer

A silver nanoparticle and amination technology, applied in the field of nanomaterials, can solve the problems of limited application range of silver-based nanomaterials and difficulty in industrial production of silver-based antibacterial agents, achieving good dispersion, simple and convenient operation, and saving time Effect

Inactive Publication Date: 2020-01-31
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver nanoparticles themselves are insoluble in water, which limits the scope of application of silver-based nanomaterials.
Although researchers have conducted a number of studies on this and achieved certain results, it is difficult to realize industrial production of silver-based antibacterial agents due to experimental conditions and cost constraints.
And the existing preparation methods often ignore the toxicity of raw materials and solvents on the biological and environmental impacts

Method used

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  • Method for preparing silver nano-particles with amino-pillar [5] arene as stabilizer
  • Method for preparing silver nano-particles with amino-pillar [5] arene as stabilizer
  • Method for preparing silver nano-particles with amino-pillar [5] arene as stabilizer

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Experimental program
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Effect test

Embodiment 1

[0022] (1) Preparation of aminated column[5]arene solution at pH=1.0: Weigh 2.6 mg of aminated column[5]arene into dilute nitric acid at pH=1.0, and stir for 5 min.

[0023] (2) Aminated column[5]arene as a stabilizer to prepare silver nanoparticles: Add 9.7 mmoL of AgNO to the above 8 mL aminated column[5]arene solution 3 Stir rapidly at 350-500 r / min for 5 minutes, then quickly inject freshly prepared NaBH respectively 4 (0.01 M) solution 0.8mL, stirred for 5 minutes to observe the change of the color of the solution, at this time the color of the solution turned bright yellow.

Embodiment 2

[0025] (1) Preparation of aminated columnar[5]arene solution at pH=1.0: Weigh 5.2 mg of aminated column[5]arene into an aqueous solution adjusted to pH=1.0 with concentrated nitric acid, and stir for 5 minutes.

[0026] (2) Preparation of silver nanoparticles with aminated column[5]arene as a stabilizer: Add 9.7 mmoL of AgNO to the prepared 8 mL of aminated column[5]arene solution 3 Stir rapidly for 5 minutes, then quickly inject freshly prepared NaBH 4 (0.20 M ) solution 1 mL, stirred for 10 minutes to observe the color change of the solution.

[0027] Such as figure 1 It is shown that the silver nanoparticles prepared by the present invention have good dispersibility, and the morphology is nano-spherical.

[0028] figure 2 It is a statistical diagram of particle size distribution of silver nanoparticles prepared by the present invention, and the particle size distribution of the nanoparticles prepared by the present invention is in the range of 1-11 nm. Most of them ar...

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Abstract

The invention discloses a method for preparing silver nano-particles with amino-pillar [5] arene as a stabilizer. The method comprises the steps that AgNo3 solution is added to an amino-pillar [5] arene solution and rapidly stirred, a NaBH4 solution is rapidly fed into the solution, stirring is performed for 5-10 minutes, and then the silver nano-particles protected by the amino-pillar [5] arene are obtained. The method for preparing the silver nano-particles with the amino-pillar [5] arene as the stabilizer overcomes the defects that by the adoption of traditional means, impurities are proneto being generated, and the structure of the silver nano-particles is prone to damage; and enough binding sites are provided and can achieve inclusion of small organic molecules.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and relates to a preparation method of silver nanoparticles. Background technique [0002] Silver nanoparticles have always attracted the attention of scientists because of their many unique properties, such as surface and interface effects, small size effects, tunneling effects, and quantum size effects. Also because of these unique properties, silver nanomaterials are widely used in fields such as electricity, sound, light, and catalysis. In recent years, the use of silver nanoparticles in infrared hyperthermia, biological detection and labeling, and surface enhancement of Raman spectroscopy have been relatively mature. [0003] The preparation methods of silver nanoparticles usually include physical methods, chemical methods and biological methods. Among them, the chemical methods include microemulsion method, pyrolysis method, electrochemical method, chemical reduction method an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/02
CPCB22F9/24B22F2009/245B22F1/054B22F1/065B22F1/102
Inventor 孙燕崔玉荃吴若郭放郇文慧刁国旺
Owner YANGZHOU UNIV
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