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Nanometer silver particle and synthetic method thereof

A technology of nano-silver particles and a synthesis method, applied in the field of nano-silver particles and their synthesis, can solve the problems of being unsuitable for the preparation of nano-silver particles, increasing the number of cultured cells, complicated preparation process, etc., achieving low cost, simple and easy-to-operate synthesis process, Simple preparation process

Active Publication Date: 2014-05-07
永新股份(黄山)包装有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Various synthetic methods in the prior art generally have the following defects: the preparation process of chemical methods is easy to cause environmental pollution, while the cost of physical methods is relatively high
The biological method using microorganisms and enzymes as raw materials needs to increase the link of culturing cells. Therefore, the preparation process is relatively complicated and is not suitable for the preparation of large-scale silver nanoparticles

Method used

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  • Nanometer silver particle and synthetic method thereof
  • Nanometer silver particle and synthetic method thereof
  • Nanometer silver particle and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Utilize orange juice to synthesize nano-silver particles, the synthesis steps are as follows:

[0033] ① Preparation of orange juice

[0034] After washing the oranges, dry them, remove the seeds and peel them, weigh 3g and squeeze the juice with a juicer, then filter out the filter residue with gauze, let the filtrate stand for 0.5h, then centrifuge at 1500rpm for 5min, and then collect the supernatant, Add water to prepare 50ml orange juice, and pass through nitrogen protection for standby.

[0035] ②, AgNO 3 Preparation of solution

[0036] Weigh 0.1702g AgNO 3 Solid, dissolved in a small beaker, fixed volume in a 100mL volumetric flask, made into 0.01mol / L AgNO 3 solution.

[0037] ③, synthesis reaction

[0038] Mix orange juice with 10mL AgNO 3 Mix the solution evenly, stir at 28°C for 15 hours, take a sample for UV-vis test, the UV-vis spectrum curve of the reaction solution is as follows figure 1 shown.

[0039] ④, post-processing

[0040] After centrif...

Embodiment 2

[0042] Utilize orange juice to synthesize nano-silver particles, the synthesis steps are as follows:

[0043] ① Preparation of orange juice

[0044] After washing the oranges, dry them, remove the seeds and peel them, weigh 1g and squeeze the juice with a juicer, then filter out the filter residue with gauze, let the filtrate stand for 0.3h, then centrifuge at 1000rpm for 5min, and then collect the supernatant, Add water to make 48ml orange juice, and pass into nitrogen protection for standby.

[0045] ②, AgNO 3 Preparation of solution

[0046] Weigh 0.1702g AgNO 3 Solid, dissolved in a small beaker, fixed volume in a 100mL volumetric flask, made into 0.01mol / L AgNO 3 solution.

[0047] ③, synthesis reaction

[0048] Mix orange juice with 10mL AgNO 3 Mix the solution evenly, stir at 32°C for 11 hours, take a sample for UV-vis test, the UV-vis spectrum curve of the reaction solution is as follows figure 1 shown.

[0049] ④, post-processing

[0050] After centrifugal s...

Embodiment 3

[0052] Utilize orange juice to synthesize nano-silver particles, the synthesis steps are as follows:

[0053] ① Preparation of orange juice

[0054] After washing the oranges, dry them, remove the seeds and peel them, weigh 4g and squeeze the juice with a juicer, then filter out the filter residue with gauze, let the filtrate stand for 0.7h, then centrifuge at 2000rpm for 5min, and then collect the supernatant, Add water to prepare 50ml orange juice, and pass through nitrogen protection for standby.

[0055] ②, AgNO 3 Preparation of solution

[0056] Weigh 0.1361g AgNO 3 Solid, dissolved in a small beaker, fixed volume in a 100mL volumetric flask, made into 0.008mol / L AgNO 3 solution.

[0057] ③, synthesis reaction

[0058] Mix orange juice with 8mL AgNO 3 Mix the solution evenly, stir at 26°C for 5 hours, take a sample for UV-vis test, the UV-vis spectrum curve of the reaction solution is as follows: figure 1 shown.

[0059] ④, post-processing

[0060] After centrif...

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Abstract

The invention belongs to the technical field of nanometer material synthesis, and particularly relates to a nanometer silver particle and a synthetic method thereof. The nanometer silver particle is in a spherical shape or a similar spherical shape, the surface of the nanometer silver particle is provided with a biomolecule wrapping layer, and biomolecules contain carboxyl groups with negative charge oxygen atoms. The nanometer silver particle is of a cubic crystal structure, and the particle diameter of the nanometer silver particle is 50 to 150nm. The nanometer silver particle is prepared by a biological material reduction method, orange juice and Ag<+> solution are uniformly mixed, the stirring is carried out at 26 to 34 DEG C, the centrifugal separation is carried out after the reaction completion, precipitates are washed and dried, and the nanometer silver particle is obtained. The biomolecules in the orange juice are used as templates, AgNO3 solution is utilized for providing silver ions, and the nanometer silver particle with the spherical appearance is synthesized through regulation and control. In fruit and vegetable juice such as orange juice, oxygen atoms on the groups such as carboxyl contained in biomolecules such as amino acid and vitamin mostly carry residual negative charges, the residual negative charges generate mutual effects with Ag<+>, nucleation sites are provided, and the generation of the nanometer silver particle is induced, regulated and controlled.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial synthesis, and in particular relates to a nano silver particle and a synthesis method thereof. Background technique [0002] Silver nanomaterials are a kind of nanomaterials. Among all kinds of metal nanomaterials, silver nanomaterials have attracted people's attention since their appearance, not only because of their unique electronic, optical, mechanical and catalytic properties, but also have good antibacterial properties and biocompatibility. Advantages such as high performance and easy surface modification. Therefore, silver nanomaterials are very useful nanomaterials, which can be used as biomedical materials, chemical catalysts, ceramic materials, sewage treatment, coatings, high-performance electrode materials, etc. The preparation and improvement technology of silver nanomaterials has become a hot spot widely concerned by researchers and developers since the beginning of nanoantiba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/02
Inventor 陈龙孙金余潘健汪来胜陈旭
Owner 永新股份(黄山)包装有限公司
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