CN103949658B - A kind of method utilizing Cortex Eucommiae water extract green syt nanometer silver - Google Patents
A kind of method utilizing Cortex Eucommiae water extract green syt nanometer silver Download PDFInfo
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- CN103949658B CN103949658B CN201410195459.1A CN201410195459A CN103949658B CN 103949658 B CN103949658 B CN 103949658B CN 201410195459 A CN201410195459 A CN 201410195459A CN 103949658 B CN103949658 B CN 103949658B
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Abstract
The invention discloses a kind of method utilizing Cortex Eucommiae water extract green syt nanometer silver, follow the steps below: the Cortex Eucommiae cleaned, 60 DEG C dry, pulverize into powder；Weigh 20mg Eucommia Bark in beaker, add 100mg water, be placed in 80 DEG C of water-baths of constant temperature 30 minutes, filter；Gained solution high speed centrifugation is separated, obtains Cortex Eucommiae water extract；Silver nitrate solution is mixed homogeneously with Cortex Eucommiae water extract, is placed in thermostat water bath reaction, obtains nano silver particles.The invention has the beneficial effects as follows and a kind of method utilizing vegetation water extract to prepare silver nanoparticle for reducing agent and protective agent in the liquid phase under temperate condition is provided, environment and human body will not be produced harm.
Description
Technical field
The invention belongs to technical field of nanometer material preparation, relate to one and utilize Cortex Eucommiae water extract
The method of green syt nanometer silver.
Background technology
Existing chemical method produces silver nano material to be needed to add multiple chemical reagent, therefore prepares
Journey produces harm, and high cost to environment and human body.
Nanometer silver and complex thereof have skin effect, quantum size effect, optical effect because of it
It is made quickly to examine in Industrial Catalysis, biological medicine, bioanalytical chemistry, food safety etc. performance
Numerous aspects such as survey, optical probe, sensor have the most potential application prospect.Receive at present
The preparation method of meter Yin mainly has physical vapor to evaporate agglutination, sputtering method, laser high-temp combustion
Method, mechanical milling method, electrochemical process, solution phase chemical reduction and light inducible etc..Wherein,
Solution phase chemical reduction, because its equipment is simple, easy to operate, pattern and the feature such as size is controlled
Become low cost and prepare the main method of nanometer silver.But most chemical methods need to introduce relatively polyvoltine
Learn reagent, there is production cost higher, and the problems such as certain environmental pollution may be brought.
The present invention utilizes hydro-thermal reaction system, merely with Cortex Eucommiae water extraction reproducible in nature
Thing reduces silver ion under mild reaction conditions, is provided without other any reducing agents, prepares
Pattern and the controlled nanometer silver of size, the method energy-saving and environment friendly, there is presently no about this
The relevant report of aspect.
Summary of the invention
It is an object of the invention to provide one and utilize Cortex Eucommiae water extract green syt nanometer silver
Method, solve existing chemical method produce silver nano material need to add multiple chemical reagent,
Therefore the problem in preparation process, environment and human body being produced harm.
The technical solution adopted in the present invention is to follow the steps below:
Step 1: the Cortex Eucommiae cleaned, 60 DEG C dry, pulverize into powder；
Step 2: weigh 20mg Eucommia Bark in beaker, adds 100mg water, is placed in perseverance
Temperature 80 DEG C of water-baths in 30 minutes, filter；
Step 3: gained solution high speed centrifugation is separated, obtains Cortex Eucommiae water extract；
Step 4: silver nitrate solution is mixed homogeneously with Cortex Eucommiae water extract, is placed in water bath with thermostatic control
React in Guo, obtain nano silver particles.
Further, step 3 high speed is centrifuged 12000r/min；Mixed liquor in described step 4
In silver nitrate concentration be 10-2-10-4mol/L。
Further, in step 4, the temperature of isothermal reaction is 20～60 DEG C, and the response time is
5-30min。
Further, in step 1, the Cortex Eucommiae refers to Cortex Eucommiae and Folium Eucommiae.
The invention has the beneficial effects as follows and utilize vegetation water in the liquid phase under a kind of temperate condition of offer
The method that extract is reducing agent and silver nanoparticle prepared by protective agent, will not produce environment and human body
Harm.
Accompanying drawing explanation
Fig. 1 is embodiment 1 prepared nanometer silver and uv-visible absorption spectroscopy figure thereof；
Fig. 2 is the nano silver particles transmission electron microscope picture that embodiment 1 prepares.
Detailed description of the invention
The present invention is described in detail with detailed description of the invention below in conjunction with the accompanying drawings.
Comprise the following steps: the preparation of (1) Cortex Eucommiae water extract: the Cortex Eucommiae is cleaned, do for 60 DEG C
Dry, it is ground into powder.Weigh 20mg Eucommia Bark in beaker, add 100mg water, put
In 80 DEG C of water-baths of constant temperature 30 minutes, filter, available filter paper, by gained solution at a high speed from
The heart (12000r/min) separates, and obtains Cortex Eucommiae water extract；(2) by silver nitrate solution and Du
Secondary water extract mixes, and the silver nitrate concentration in mixed liquor is 10-2-10-4Mol/L, mixing is all
After even, being placed in thermostat water bath, temperature controls at 20 DEG C-60 DEG C, and the response time controls
5-30min, controlled preparation, control different temperature and response time, change the dense of silver nitrate
Degree, it is possible to obtain the nano silver particles of different-grain diameter, the particle diameter of the nanometer silver that can prepare is
5-60nm。
Present invention solves the technical problem that to be to provide under a kind of temperate condition and utilize in the liquid phase
The method that vegetation water extract is reducing agent and silver nanoparticle prepared by protective agent, the method is simple,
Mild condition, has environmental friendliness, the feature such as yield is big and structure is distinct.
In Cortex Eucommiae water extract, polyphenol is as reducing agent, it is not necessary to add other chemical reagent, right
Environment and biology do not have toxic action, compensate for existing chemical method and produce silver nano material not
Foot, gutta-percha, as protective agent, can effectively control the pattern of silver nanoparticle product.This reactant
System is simple, and preparation is convenient, and mild condition, as being used for producing, can be greatly saved cost.
Specific embodiment is set forth below, and the present invention will be described:
Embodiment 1: the present embodiment a kind of utilizes Cortex Eucommiae water extract green syt nanometer silver
Method, it specifically comprises the following steps that
Step 1: the Cortex Eucommiae cleaned, 60 DEG C dry, pulverize into powder；
Step 2: weigh 20mg Eucommia Bark in beaker, adds 100mg water, is placed in perseverance
Temperature 80 DEG C of water-baths in 30 minutes, filter；
Step 3: gained solution high speed centrifugation 12000r/min is separated, obtains Cortex Eucommiae water and carry
Take thing；
Step 4: silver nitrate solution is mixed with Cortex Eucommiae water extract, the silver nitrate in mixed liquor
Concentration is 10-3Mol/L, after mix homogeneously, is placed in thermostat water bath, and temperature controls 40
DEG C, the response time controls at 20 minutes, and the particle diameter of the nanometer silver of preparation is 10-40nm.
It is illustrated in figure 1 nanometer silver and uv-visible absorption spectroscopy thereof that embodiment 1 prepares
Figure, its maximum absorption band is 521nm.
It is illustrated in figure 2 the nano silver particles transmission electron microscope picture that embodiment 1 prepares.At Fig. 2
In, scale is 20nm.
Embodiment 2: the present embodiment a kind of utilizes Cortex Eucommiae water extract green syt nanometer silver
Method, it specifically comprises the following steps that
Step 1: the Cortex Eucommiae cleaned, 60 DEG C dry, pulverize into powder；
Step 2: weigh 20mg Eucommia Bark in beaker, adds 100mg water, is placed in perseverance
Temperature 80 DEG C of water-baths in 30 minutes, filter；
Step 3: gained solution high speed centrifugation 12000r/min is separated, obtains Cortex Eucommiae water and carry
Take thing；
Step 4: silver nitrate solution is mixed with Cortex Eucommiae water extract, the silver nitrate in mixed liquor
Concentration is 10-4Mol/L, after mix homogeneously, is placed in thermostat water bath, and temperature controls 20
DEG C, the response time controls at 30min, and the particle diameter of the nanometer silver of preparation is 5-20nm.
Embodiment 3: the present embodiment a kind of utilizes Cortex Eucommiae water extract green syt nanometer silver
Method, it specifically comprises the following steps that
Step 1: the Cortex Eucommiae cleaned, 60 DEG C dry, pulverize into powder；
Step 2: weigh 20mg Eucommia Bark in beaker, adds 100mg water, is placed in perseverance
Temperature 80 DEG C of water-baths in 30 minutes, filter；
Step 3: gained solution high speed centrifugation 12000r/min is separated, obtains Cortex Eucommiae water and carry
Take thing；
Step 4: silver nitrate solution is mixed with Cortex Eucommiae water extract, the silver nitrate in mixed liquor
Concentration is 10-2Mol/L, after mix homogeneously, is placed in thermostat water bath, and temperature controls 60
DEG C, the response time controls at 5min, and the particle diameter of the nanometer silver of preparation is 30-60nm.
Claims (4)
1. the method utilizing Cortex Eucommiae water extract green syt nanometer silver, it is characterised in that follow the steps below:
Step 1: the Cortex Eucommiae cleaned, 60 DEG C dry, pulverize into powder；
Step 2: weigh 20mg Eucommia Bark in beaker, adds 100mg water, is placed in 80 DEG C of water-baths of constant temperature 30 minutes, filters；
Step 3: gained solution high speed centrifugation is separated, obtains Cortex Eucommiae water extract；
Step 4: mixed homogeneously with Cortex Eucommiae water extract by silver nitrate solution, is placed in thermostat water bath reaction, obtains nano silver particles；
In described step 1, the Cortex Eucommiae refers to Cortex Eucommiae and Folium Eucommiae.
The method utilizing Cortex Eucommiae water extract green syt nanometer silver the most according to claim 1, it is characterised in that: described step 3 high speed centrifugal rotational speed is 12000r/min；In described step 4, the silver nitrate concentration in mixed liquor is 10-2～10-4mol/L。
The method utilizing Cortex Eucommiae water extract green syt nanometer silver the most according to claim 1 and 2, it is characterised in that: in described step 4, the temperature of isothermal reaction is 20～60 DEG C, and the response time is 5～30min.
The method utilizing Cortex Eucommiae water extract green syt nanometer silver the most according to claim 1 and 2, it is characterised in that: silver nitrate concentration 10-3Mol/L, temperature controls at 40 DEG C, and the response time controls at 20min, and the particle diameter of the nanometer silver of preparation is 10-40nm；Silver nitrate concentration 10-4Mol/L, temperature controls at 20 DEG C, and the response time controls at 30min, and the particle diameter of the nanometer silver of preparation is 5-20nm；Silver nitrate concentration 10-2Mol/L, temperature controls at 60 DEG C, and the response time controls at 5min, and the particle diameter of the nanometer silver of preparation is 30-60nm.
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| CN105040414B (en) * | 2015-05-25 | 2017-05-03 | 厦门大学 | Preparation method of sliver supporting fabric based on plant material and nanometer sliver synergetic antibacterial |
| CN106112008B (en) * | 2016-08-18 | 2019-04-05 | 安徽科技学院 | The method for preparing nano silver using sweet osmanthus blade |
| CN106827142B (en) * | 2017-01-03 | 2019-08-27 | 浙江省林业科学研究院 | A kind of antibacterial, anti-mite, except aldehyde bamboo mat manufacturing method |
| CN107598153A (en) * | 2017-08-30 | 2018-01-19 | 西安理工大学 | A kind of preparation method of the Silver Nanoparticles of anti-pancreatic cancer and lung cancer |
| CN109909512A (en) * | 2017-12-12 | 2019-06-21 | 中国科学院深圳先进技术研究院 | A kind of silver nanowires and its green magnanimity preparation method |
| CN108097980A (en) * | 2017-12-18 | 2018-06-01 | 上海理工大学 | A kind of method that silver nano-grain is prepared using rhizoma atractylodis leaching liquor |
| CN109550974B (en) * | 2018-12-13 | 2021-03-30 | 华南理工大学 | Preparation method for green synthesis of nano-silver by using carnosic acid |
| CN109702218B (en) * | 2018-12-25 | 2020-09-29 | 浙江大学 | Method for preparing nano-silver particles by using phyllanthus emblica extract, product and application |
| CN109909513B (en) * | 2019-04-26 | 2022-03-04 | 中国科学院西双版纳热带植物园 | Method for biologically synthesizing nano silver particles by using glochidion pubescens and application |
| CN110405225A (en) * | 2019-08-14 | 2019-11-05 | 昆山菲骐环保科技有限公司 | The preparation method of one Plant Extracts nano materials |
| CN113527769B (en) * | 2021-06-28 | 2022-08-12 | 中国科学院合肥物质科学研究院 | Synthesis method of eucommia polysaccharide nano silver, synthesized eucommia polysaccharide nano silver and application thereof |
| CN113828791A (en) * | 2021-08-26 | 2021-12-24 | 桂林理工大学 | Method for green preparation of silver nanoparticles from passion fruit peel extract and application of silver nanoparticles |
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| CN102240815A (en) * | 2011-06-16 | 2011-11-16 | 广东工业大学 | Method for preparing nano silver particles by using plant extract for reduction, and application of method |
| CN102941348A (en) * | 2012-12-05 | 2013-02-27 | 苏州大学 | Method for preparing nano-silver hydrosol by using plant extract |
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| CN101912976A (en) * | 2010-08-24 | 2010-12-15 | 厦门大学 | Method for preparing silver nano granules by reducing plant extract |
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Effective date of registration: 20191023 Address after: No. 228, Jian Dong Boulevard, Maping Town, Zigui County, Yichang, Hubei Patentee after: Hubei Jisheng textile Polytron Technologies Inc Address before: 430073 No. 1 Textile Road, Hongshan District, Hubei, Wuhan Patentee before: Wuhan Textile University |
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