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Green synthesis method of nano-silver by utilizing eucommia ulmoides water extract

A water extract, green synthesis technology, applied in nanotechnology and other directions, can solve problems such as environmental and human harm

Active Publication Date: 2014-07-30
湖北吉盛纺织科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for green synthesis of nano-silver using Eucommia water extract, which solves the problem that the existing chemical method needs to add a variety of chemical reagents to produce silver nano-materials, so the problem of harm to the environment and human body during the preparation process

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Embodiment 1

[0022] Embodiment 1: A kind of method of utilizing Eucommia ulmoides water extract green synthesis nano-silver of the present embodiment, its specific steps are as follows:

[0023] Step 1: Wash Eucommia ulmoides, dry at 60°C, and pulverize into powder;

[0024] Step 2: Weigh 20mg of Eucommia powder into a beaker, add 100mg of water, place in a water bath at a constant temperature of 80°C for 30 minutes, and filter;

[0025] Step 3: centrifuging the obtained solution at a high speed of 12000r / min to obtain the Eucommia water extract;

[0026] Step 4: Silver nitrate solution is mixed with Eucommia ulmoides water extract, and the concentration of silver nitrate in the mixed solution is 10 -3 mol / L, after mixing evenly, place in a constant temperature water bath, the temperature is controlled at 40°C, the reaction time is controlled at 20 minutes, and the particle size of the prepared nano-silver is 10-40nm.

[0027] Such as figure 1 Shown are the nano-silver prepared in Examp...

Embodiment 2

[0029] Embodiment 2: A kind of method of utilizing Eucommia ulmoides water extract green synthesis nano-silver of the present embodiment, its specific steps are as follows:

[0030] Step 1: Wash Eucommia ulmoides, dry at 60°C, and pulverize into powder;

[0031] Step 2: Weigh 20mg of Eucommia powder into a beaker, add 100mg of water, place in a water bath at a constant temperature of 80°C for 30 minutes, and filter;

[0032] Step 3: centrifuging the obtained solution at a high speed of 12000r / min to obtain the Eucommia water extract;

[0033] Step 4: Silver nitrate solution is mixed with Eucommia ulmoides water extract, and the concentration of silver nitrate in the mixed solution is 10 -4 mol / L, mixed evenly, placed in a constant temperature water bath, the temperature was controlled at 20°C, the reaction time was controlled at 30min, and the particle size of the prepared nano-silver was 5-20nm.

Embodiment 3

[0034] Embodiment 3: A kind of method of utilizing Eucommia ulmoides water extract green synthesis nano-silver of the present embodiment, its specific steps are as follows:

[0035] Step 1: Wash Eucommia ulmoides, dry at 60°C, and pulverize into powder;

[0036] Step 2: Weigh 20mg of Eucommia powder into a beaker, add 100mg of water, place in a water bath at a constant temperature of 80°C for 30 minutes, and filter;

[0037] Step 3: centrifuging the obtained solution at a high speed of 12000r / min to obtain the Eucommia water extract;

[0038] Step 4: Silver nitrate solution is mixed with Eucommia ulmoides water extract, and the concentration of silver nitrate in the mixed solution is 10 -2 mol / L, mixed evenly, placed in a constant temperature water bath, the temperature was controlled at 60°C, the reaction time was controlled at 5min, and the particle size of the prepared nano-silver was 30-60nm.

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Abstract

The invention discloses a green synthesis method of nano-silver by utilizing eucommia ulmoides water extract. The green synthesis method comprises the following steps: washing eucommia ulmoides, drying at 60 DEG C, and smashing into powder; weighing 20 mg of eucommia ulmoides powder in a beaker, adding 100 mg of water, putting in a water bath kettle at the constant temperature of 80 DEG C for 30 minutes, and filtering; carrying out high-speed centrifugal separation on an obtained solution so as to obtain the eucommia ulmoides water extract; uniformly mixing a silver nitrate solution with the eucommia ulmoides water extract, and putting in the constant-temperature water bath kettle for reaction so as to obtain nano-silver particles. The method has the benefit that a method for preparing nano-silver by utilizing the plant water extract as a reducing agent and a protective agent under mild conditions is provided in a liquid phase, and no damage to the environment and human bodies is achieved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a method for green synthesis of nanosilver by using Eucommia water extract. Background technique [0002] The production of silver nanomaterials by existing chemical methods needs to add various chemical reagents, so the preparation process is harmful to the environment and human body, and the cost is too high. [0003] Due to their surface effect, quantum size effect, optical effect and other properties, nano-silver and its composites have extensive potential in many aspects such as industrial catalysis, biomedicine, bioanalytical chemistry, food safety rapid detection, optical probes, sensors, etc. Application prospect. At present, the preparation methods of nano-silver mainly include physical vapor phase evaporation condensation method, sputtering method, laser high temperature combustion method, mechanical grinding method, electrochemical method, liquid phase ...

Claims

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Application Information

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IPC IPC(8): B22F9/24B82Y40/00
Inventor 李伟杨锋刘慧宏
Owner 湖北吉盛纺织科技股份有限公司
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