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Synthesis method of silver nanoparticles

A silver nanoparticle and synthesis method technology, applied in the field of metal nanoparticle production, can solve the problems of reducing environment and biological hazards, and achieve excellent antibacterial effect, long-term storage stability, and uniform particle size distribution

Active Publication Date: 2016-06-08
扬州市维纳复合材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These reducing agents have very high reducing properties and have potential environmental and biological hazards

Method used

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  • Synthesis method of silver nanoparticles
  • Synthesis method of silver nanoparticles
  • Synthesis method of silver nanoparticles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Add 1mL of 0.1M silver nitrate aqueous solution to 58.0mL of 0.1(wt)% carboxymethyl chitosan aqueous solution. When the above components are uniformly dispersed, add 1mL of 0.1M β-D glucose aqueous solution and continue stirring. The above mixture was reacted at room temperature for 24 h. After reacting for 1 h, the solution turned bright yellow, indicating that silver nanoparticles began to form. The UV-vis adsorption spectrum test result of the final product shows the surface plasmon adsorption of silver elemental particles.

Embodiment 2

[0026] 2 mL of 0.1 M silver nitrate aqueous solution was added to 56.0 mL of 0.1 (wt) % carboxymethyl chitosan aqueous solution. When the above components are uniformly dispersed, add 2mL of 0.1M β-D glucose aqueous solution and continue stirring. The above mixture was reacted at room temperature for 40 h. After reacting for 1 h, the solution turned bright yellow, indicating that silver nanoparticles began to form. The UV-vis adsorption spectrum test result of the final product shows the surface plasmon adsorption of silver elemental particles.

Embodiment 3

[0028] 3 mL of 0.1 M silver nitrate aqueous solution was added to 54.0 mL of 0.15 (wt) % carboxymethyl chitosan aqueous solution. When the above components are evenly dispersed, add 3mL of 0.1ML-glucose aqueous solution and continue stirring. The above mixture was reacted at room temperature for 30 h. After reacting for 1 h, the solution turned bright yellow, indicating that silver nanoparticles began to form. The UV-vis adsorption spectrum test result of the final product shows the surface plasmon adsorption of silver elemental particles.

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Abstract

The invention discloses a synthesis method of silver nanoparticles and relates to the technical field of production of green and stable metal nanoparticles. The synthesis method comprises the following steps: uniformly mixing a silver nitrate aqueous solution with a carboxymethyl chitosan aqueous solution, adding a glucose aqueous solution to form a mixed system, and causing the mixed system to react under the stirring condition at the room temperature to obtain silver nanoparticles. The distilled water is used as a dispersion medium; the glucose is used as a reducing agent; the reducing agent is characterized in that the reducing agent is mild, reproducible, cheap and non-toxic; the carboxymethyl chitosan is used as a protection agent; the carboxymethyl chitosan is reproducible polymer chitosan and can be used as a biocompatible and antibacterial derivative. The particles prepared by the method have average particle diameter being smaller than 10nm; the particle diameter is uniformly distributed; the long-term and stable metal nanoparticles can be stored.

Description

technical field [0001] The invention relates to the technical field of production of green and stable metal nanoparticles. Background technique [0002] Over the past 30 years, "green" chemistry and chemical processes have been a subject of increasing attention. The purpose of developing "green" chemistry and chemical engineering is to completely eliminate or at least minimize the generation of waste and implement sustainable development. In order to achieve these goals, "green" must be fully considered in the design of synthetic routes, chemical analysis and chemical processes. The use of non-toxic chemicals, environmentally friendly solvents, and renewable raw materials are key issues worth considering in green synthesis strategies. [0003] Metal and semiconductor nanoparticles have attracted much attention due to their potential applications in the emerging field of nanoscience and technology. Size, shape, and surface chemistry are critical in controlling the physical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/054
Inventor 朱爱萍毛正和
Owner 扬州市维纳复合材料科技有限公司
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