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Method for preparing nano-silver particles by adopting dried tangerine peel extracting solution

A technology of nano-silver particles and extracting solution, applied in the direction of nanotechnology, which can solve the problems of easy agglomeration of products and low yield, and achieve the effects of easy acquisition, low equipment requirements, and good product stability

Active Publication Date: 2019-08-20
NANJING AUTOMATION INST OF WATER CONSERVANCY & HYDROLOGY MINIST OF WATER RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of nano-silver by plant method is attracting more and more attention, but most nano-silver synthesized by plant method has problems such as low yield and easy agglomeration of products, so it is still necessary to optimize and further study the process of plant-based synthesis of nano-silver

Method used

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  • Method for preparing nano-silver particles by adopting dried tangerine peel extracting solution
  • Method for preparing nano-silver particles by adopting dried tangerine peel extracting solution
  • Method for preparing nano-silver particles by adopting dried tangerine peel extracting solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] In this example, the synthesis experiment of silver nanoparticles was carried out under different additions of orange peel extracts. The specific steps of the method for preparing nano silver particles from the orange peel extracts provided in this example are as follows:

[0036] The first step, preparation of tangerine peel extract:

[0037] The tangerine peel used in the experiment was purchased from the traditional Chinese medicine counter of Xiansheng Pharmaceutical. The purchased tangerine peel was rinsed with pure water three times, and the surface moisture was naturally dried. Stir and mix 5g of tangerine peel powder and 200mL of pure water in a conical flask, put it in a 90°C water bath and let it stand for 7 minutes (heating and soaking temperature can be between 60-100°C, and the duration is 5-60min, the following examples Same as this parameter), then take out the Erlenmeyer flask and put it into the ultrasonic pool for 30 minutes of ultrasonication. Afterw...

Embodiment 2

[0042] In this example, different AgNO 3 The synthesis experiment of nano-silver particles was carried out under the addition amount. The specific steps of the method for preparing nano-silver particles from the tangerine peel extract provided in this example are as follows:

[0043] The first step, preparation of tangerine peel extract:

[0044] The tangerine peel used in the experiment was purchased from the traditional Chinese medicine counter of Xiansheng Pharmaceutical. The purchased tangerine peel was rinsed with pure water three times, and the surface moisture was naturally dried, then dried, crushed, and passed through a 40-mesh sieve to obtain tangerine peel powder. Stir and mix 5g of tangerine peel powder and 200mL of pure water in a conical flask, put it in a 90°C water bath and keep it for 7 minutes, then take out the conical flask and put it into an ultrasonic pool for 30 minutes of ultrasonication. Afterwards, the mixed solution was suction-filtered twice throug...

Embodiment 3

[0048] In this embodiment, nano-silver particle synthesis experiments are carried out at different reaction temperatures. The specific steps of the method for preparing nano-silver particles from the tangerine peel extract provided in this example are as follows:

[0049] The first step, the preparation of tangerine peel extract, is the same as in Example 2.

[0050] The second step, nano silver preparation:

[0051] Take 5 parts of tangerine peel extract, each part is 2mL, dilute them with pure water to a total volume of 9.7mL, put these equal samples in a water bath at 4 / 20 / 60 / 80 / 100°C and stir evenly, then Add 0.3mL 100mmol / LAgNO respectively 3 solution, mixed evenly and then left at constant temperature for 2h. After the reaction was completed, the reaction solution was taken out for ultrasonication, and all samples were diluted according to the same ratio, and put into a spectrophotometer for testing. Test results such as Figure 4 , it can be seen that at 20°C and be...

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Abstract

The invention discloses a method for preparing nano-silver particles by adopting a dried orange peel extracting solution. The method comprises the following steps that dried tangerine peels are cleaned, dried, crushed and sieved to obtain dried orange peel powder, then pure water is added, and heating and soaking, ultrasonic treatment, natural cooling and filtering are carried out to obtain the dried tangerine peel extracting solution; the dried tangerine peel extracting solution is mixed with the pure water, heating in a water bath is carried out, and then an AgNO 3 solution is added for uniform stirring; and finally, a hypochlorite solution is added, uniform mixing is carried out, then reaction at a constant temperature is carried out, and the green synthetic nano-silver particles are obtained after the reaction carried out for a period of time. According to the method, the dried tangerine peel extracting solution is taken as a reducing agent and a stabilizer to prepare and obtain the nano-silver particles, a part of effective components in the dried tangerine peels are adsorbed to the surface of nano-silver, so that the stability of the nano-silver is improved, and the potentialapplication function and value of the nano-silver particles prepared by using the method in the fields of medical treatment, environmental protection and the like are greatly increased; and meanwhile, the mode that sodium hypochlorite is added as a control agent in the synthesis process is put forward for the first time, and the synthesis reaction time is effectively shortened.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a method for preparing nano silver particles from dried orange peel extract. Background technique [0002] Nanosilver (AgNPs) has large specific surface area, high surface energy, good electrical conductivity, surface effect, small size effect and quantum tunneling effect, etc. It can be used as high-end silver paste, conductive coating, catalytic material, antibacterial material and drug The carrier has far-reaching application prospects in the fields of optoelectronic chip manufacturing, medical health, and green home appliances. Among them, the broad-spectrum and high-efficiency antibacterial effect of nano-silver has been widely recognized. It has good biocompatibility and is not easy to make the corresponding pathogenic bacteria / body resistant to drugs. It is the solution to the difficult problem of drug-resistant infectious diseases. One of the breakthroughs...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
CPCB22F9/24B82Y40/00
Inventor 杨博玥张卫孙奕李辉王岩熊陈
Owner NANJING AUTOMATION INST OF WATER CONSERVANCY & HYDROLOGY MINIST OF WATER RESOURCES
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