Biological synthesis method of cubic nanometer silver particles

A nano-silver particle and biosynthesis technology, applied in the direction of nanotechnology, can solve the problems of resource waste, environmental pollution, etc., and achieve the effect of narrow distribution range, small particle size, and non-toxic price

Active Publication Date: 2015-09-09
广州博士派生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a by-product of sweet orange industrial processing, sweet orange peel is generally discarded, which not only causes a huge waste of resources...

Method used

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  • Biological synthesis method of cubic nanometer silver particles
  • Biological synthesis method of cubic nanometer silver particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A biosynthesis method of cube-shaped silver nanoparticles, the steps of which are as follows:

[0027] Prepare sweet orange peel extract;

[0028] Weigh fresh sweet orange peel, add water twice the weight of the sweet orange peel, squeeze it into juice, filter, and store at 4°C for later use;

[0029] Preparation of lotus leaf extract:

[0030] Take fresh lotus leaves, add water 3 times the weight of lotus leaves, squeeze into juice, filter, and store at 4°C for later use;

[0031] mixed reaction:

[0032] Take 1 times the weight of sweet orange peel extract, 0.2 times the weight of lotus leaf extract, mix with 10 times the weight of 0.5mM silver nitrate solution, adjust the pH of the silver nitrate solution to 9.0, and react at 52°C for 16 minutes.

Embodiment 2

[0034] A biosynthesis method of cube-shaped silver nanoparticles, the steps of which are as follows:

[0035] Prepare sweet orange peel extract;

[0036] Weigh fresh sweet orange peel, add water twice the weight of the sweet orange peel, squeeze it into juice, filter, and store at 4°C for later use;

[0037] Preparation of lotus leaf extract:

[0038] Take fresh lotus leaves, add water 3 times the weight of lotus leaves, squeeze into juice, filter, and store at 4°C for later use;

[0039] mixed reaction:

[0040] Take 1 times the weight of sweet orange peel extract, 0.3 times the weight of lotus leaf extract, mix with 8 times the weight of 0.5mM silver nitrate solution, adjust the pH of the silver nitrate solution to 9.0, and react at 60°C for 10 minutes.

Embodiment 3

[0042] A biosynthesis method of cube-shaped silver nanoparticles, the steps of which are as follows:

[0043] Prepare sweet orange peel extract;

[0044] Weigh fresh sweet orange peel, add water twice the weight of the sweet orange peel, squeeze it into juice, filter, and store at 4°C for later use;

[0045] Preparation of lotus leaf extract:

[0046] Take fresh lotus leaves, add water 3 times the weight of lotus leaves, squeeze into juice, filter, and store at 4°C for later use;

[0047] mixed reaction:

[0048] Take 1 times the weight of sweet orange peel extract, 0.2 times the weight of lotus leaf extract, mix with 9 times the weight of 0.5mM silver nitrate solution, adjust the pH of the silver nitrate solution to 9.0, and react at 55°C for 13 minutes.

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Abstract

The invention discloses a biological synthesis method of cubic nanometer silver particles. The biological synthesis method comprises the following steps of preparing a sweet orange peel extraction solution; preparing a lotus leaf extraction solution; performing a mixed reaction which comprises taking the sweet orange peel extraction solution and the lotus leaf extraction solution to be mixed with an 8 to 10 times of weight of 0.5 mM silver nitrate solution, adjusting a pH (Potential Of Hydrogen) value of the silver nitrate solution into 9.0 and performing the reaction for 10 to 16 minutes under 52 to 60 DEG C. According to the biological synthesis method, nanometer silver particles with small particle size, narrow distribution range and regular cubic form can be produced controllably.

Description

technical field [0001] The invention relates to a biosynthesis method of nano-silver, in particular to synthesizing cube-shaped nano-silver with sweet orange peel extract and lotus leaf extract. Background technique [0002] Nano-silver particles have unique physical and chemical properties and are widely used in catalysis, optoelectronics, optics, biological science and pharmaceuticals. Therefore, it is of great significance to study the preparation method of nano-silver. At present, nano-silver particles can be prepared by physical (steam-condensation method, ball milling method, sputtering method, discharge explosion method), chemical (liquid phase reaction method, gas phase reaction method, template synthesis method), photocatalysis and biological methods. Compared with physical and chemical methods, biological methods have attracted the attention of many researchers because of their advantages such as high efficiency, rapidity, stability, simplicity, environmental frie...

Claims

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Application Information

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IPC IPC(8): B22F9/24B22F1/00B82Y40/00
Inventor 史昕怡潘林武
Owner 广州博士派生物科技有限公司
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