CN103978223B - A kind of method utilizing Cortex Eucommiae water extract green syt nanometer gold - Google Patents
A kind of method utilizing Cortex Eucommiae water extract green syt nanometer gold Download PDFInfo
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- CN103978223B CN103978223B CN201410198358.XA CN201410198358A CN103978223B CN 103978223 B CN103978223 B CN 103978223B CN 201410198358 A CN201410198358 A CN 201410198358A CN 103978223 B CN103978223 B CN 103978223B
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Abstract
The invention discloses a kind of method utilizing Cortex Eucommiae water extract green syt nanometer gold, carry out according to following steps: 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；Chlorauric acid solution is mixed homogeneously with Cortex Eucommiae water extract, is placed in thermostat water bath and reacts, obtain nano Au particle.The invention has the beneficial effects as follows and a kind of method utilizing vegetation water extract to prepare gold nano 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 a kind of method utilizing Cortex Eucommiae water extract green syt nanometer gold.
Background technology
Existing chemical method produces gold nano-material to be needed to add multiple chemical reagent, therefore in preparation process, environment and human body is produced harm and high cost.
Nanometer gold and complex thereof have because of it performances such as skin effect, quantum size effect, optical effect make it quickly detect in Industrial Catalysis, biological medicine, bioanalytical chemistry, food safety, optical probe, sensor etc. numerous in have extensively potential application prospect.The preparation method of current nanometer gold mainly has physical vapor evaporation agglutination, sputtering method, laser high-temperature 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 size is controlled etc. that feature becomes low cost prepares the main method of nanometer gold.But most chemical methods need to introduce more chemical reagent, there is production cost higher, and it would furthermore be possible to bring the problems such as certain environmental pollution.
The present invention utilizes hydro-thermal reaction system, gold ion is reduced under mild reaction conditions merely with Cortex Eucommiae water extract reproducible in nature, it is provided without other any reducing agents, pattern and the controlled nanometer gold of size are prepared, the method energy-saving and environment friendly, there is presently no the relevant report about this respect.
Summary of the invention
It is an object of the invention to provide a kind of method utilizing Cortex Eucommiae water extract green syt nanometer gold, solving existing chemical method production gold nano-material needs to add multiple chemical reagent, the problem therefore in preparation process, environment and human body being produced harm.
The technical solution adopted in the present invention is to carry out according to following steps:
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 chlorauric acid solution, is placed in thermostat water bath and reacts, obtain nano Au particle.
Further, the centrifugal 12000r/min of step 3 high speed；In described step 4, the gold chloride concentration in mixed liquor is 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 a kind of method utilizing vegetation water extract to prepare gold nano for reducing agent and protective agent in the liquid phase under temperate condition is provided, environment and human body will not be produced harm.
Accompanying drawing explanation
Fig. 1 is the nanometer gold for preparing of embodiment 1 and uv-visible absorption spectroscopy figure thereof；
Fig. 2 is the nano Au particle transmission electron microscope picture that embodiment 1 prepares；
Fig. 3 is the grain size distribution of the nano Au particle that embodiment 1 prepares.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Comprising the following steps: the preparation of (1) Cortex Eucommiae water extract: 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, available filter paper, gained solution high speed centrifugation (12000r/min) is separated, obtains Cortex Eucommiae water extract；(2) being mixed with Cortex Eucommiae water extract by chlorauric acid solution, the gold chloride concentration in mixed liquor is 10-2-10-4Mol/L, after mix homogeneously, it is placed in thermostat water bath, temperature controls at 20 DEG C-60 DEG C, and the response time controls at 5-30min, controlled synthesis, control different temperature and response time, change the concentration of gold chloride, it is possible to obtain the nano Au particle of different-grain diameter, the particle diameter of the nanometer gold that can prepare is 5-60nm.
Present invention solves the technical problem that and be in that to provide a kind of method utilizing vegetation water extract to prepare gold nano for reducing agent and protective agent under temperate condition in the liquid phase, 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, and environment and biology are not had toxic action, compensate for existing chemical method and produces the deficiency of gold nano-material, and gutta-percha is as protective agent, it is possible to effectively control the pattern of gold nano product.This reaction 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: a kind of method utilizing Cortex Eucommiae water extract green syt nanometer gold of the present embodiment, 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 80 DEG C of water-baths of constant temperature 30 minutes, filters；
Step 3: gained solution high speed centrifugation 12000r/min is separated, obtains Cortex Eucommiae water extract；
Step 4: mixed with Cortex Eucommiae water extract by chlorauric acid solution, the gold chloride concentration in mixed liquor is 10-3Mol/L, after mix homogeneously, is placed in thermostat water bath, and temperature controls at 40 DEG C, and the response time controls at 20min, and the particle diameter of the nanometer gold of preparation is 10-40nm.
It being illustrated in figure 1 nanometer gold and uv-visible absorption spectroscopy figure thereof that embodiment 1 prepares. its maximum absorption band is 521nm.
It is illustrated in figure 2 the nano Au particle transmission electron microscope picture that embodiment 1 prepares.In fig. 2, scale is 20nm.
It is the grain size distribution of the nano Au particle that embodiment 1 prepares as shown in Figure 3.
Embodiment 2: a kind of method utilizing Cortex Eucommiae water extract green syt nanometer gold of the present embodiment, 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 80 DEG C of water-baths of constant temperature 30 minutes, filters；
Step 3: gained solution high speed centrifugation 12000r/min is separated, obtains Cortex Eucommiae water extract；
Step 4: mixed with Cortex Eucommiae water extract by chlorauric acid solution, the gold chloride concentration in mixed liquor is 10-4Mol/L, after mix homogeneously, is placed in thermostat water bath, and temperature controls at 20 DEG C, and the response time controls at 30min, and the particle diameter of the nanometer gold of preparation is 5-20nm.
Embodiment 3: a kind of method utilizing Cortex Eucommiae water extract green syt nanometer gold of the present embodiment, 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 80 DEG C of water-baths of constant temperature 30 minutes, filters；
Step 3: gained solution high speed centrifugation 12000r/min is separated, obtains Cortex Eucommiae water extract；
Step 4: mixed with Cortex Eucommiae water extract by chlorauric acid solution, the gold chloride concentration in mixed liquor is 10-2Mol/L, after mix homogeneously, is placed in thermostat water bath, and temperature controls at 60 DEG C, and the response time controls at 5min, and the particle diameter of the nanometer gold of preparation is 30-60nm.
Claims (4)
1. the method utilizing Cortex Eucommiae water extract green syt nanometer gold, it is characterised in that carry out according to following steps:
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 chlorauric acid solution, is placed in thermostat water bath and reacts, obtain nano Au particle；
In described step 1, the Cortex Eucommiae refers to Cortex Eucommiae and Folium Eucommiae.
2. the method utilizing Cortex Eucommiae water extract green syt nanometer gold according to claim 1, it is characterised in that: described step 3 high speed is centrifuged 12000r/min；In described step 4, the gold chloride concentration in mixed liquor is 10-2～10-4mol/L。
3. the method utilizing Cortex Eucommiae water extract green syt nanometer gold 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.
4. the method utilizing Cortex Eucommiae water extract green syt nanometer gold according to claim 1 and 2, it is characterised in that: gold chloride concentration 10-3Mol/L, temperature controls at 40 DEG C, and the response time controls at 20min, and the particle diameter of the nanometer gold of preparation is 10-40nm；Gold chloride concentration 10-4Mol/L, temperature controls at 20 DEG C, and the response time controls at 30min, and the particle diameter of the nanometer gold of preparation is 5-20nm；Gold chloride concentration 10-2Mol/L, temperature controls at 60 DEG C, and the response time controls at 5min, and the particle diameter of the nanometer gold of preparation is 30-60nm.
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| CN105965031B (en) * | 2016-07-21 | 2017-11-14 | 上海理工大学 | A kind of method that nanogold particle is prepared using matrimony vine leaching liquor |
| CN107876798A (en) * | 2017-12-12 | 2018-04-06 | 上海理工大学 | A kind of method that gold nano grain is prepared using Sargent gloryvine extract solution |
| CN113020616A (en) * | 2021-03-22 | 2021-06-25 | 扬州大学 | Method for green synthesis of nanogold by using quercetin |
| CN114029501A (en) * | 2021-11-12 | 2022-02-11 | 中国科学院合肥物质科学研究院 | Green synthesis method of nano platinum and application of nano platinum in cosmetics |
| CN114406281A (en) * | 2022-01-28 | 2022-04-29 | 国科温州研究院(温州生物材料与工程研究所) | Method for preparing gold nanoparticles by reduction of plant polyphenol and application |
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| CN101214547A (en) * | 2008-01-07 | 2008-07-09 | 李伟强 | Micrometer silver-copper granule containing nano level surface structure and preparation and application thereof |
| CN102202815A (en) * | 2008-05-16 | 2011-09-28 | 维鲁泰克技术股份有限公司 | Green synthesis of nanometals using plant extracts and use thereof |
| CN103273079A (en) * | 2013-05-10 | 2013-09-04 | 安徽医科大学 | Gold nanoflower preparing method and application of gold nanoflowers |
| CN103302306A (en) * | 2013-06-19 | 2013-09-18 | 东南大学 | Method for reducing and preparing functionalized nano-silver based on polyphenol |
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| WO2011041458A1 (en) * | 2009-09-29 | 2011-04-07 | Varma Rajender S | Green synthesis of nanometals using fruit extracts and use thereof |
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| CN101214547A (en) * | 2008-01-07 | 2008-07-09 | 李伟强 | Micrometer silver-copper granule containing nano level surface structure and preparation and application thereof |
| CN102202815A (en) * | 2008-05-16 | 2011-09-28 | 维鲁泰克技术股份有限公司 | Green synthesis of nanometals using plant extracts and use thereof |
| CN103273079A (en) * | 2013-05-10 | 2013-09-04 | 安徽医科大学 | Gold nanoflower preparing method and application of gold nanoflowers |
| CN103302306A (en) * | 2013-06-19 | 2013-09-18 | 东南大学 | Method for reducing and preparing functionalized nano-silver based on polyphenol |
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