CN103302305A - Method for preparing silver nanowires by using biomolecular amino acid as reducing agent - Google Patents
Method for preparing silver nanowires by using biomolecular amino acid as reducing agent Download PDFInfo
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- CN103302305A CN103302305A CN2013102314827A CN201310231482A CN103302305A CN 103302305 A CN103302305 A CN 103302305A CN 2013102314827 A CN2013102314827 A CN 2013102314827A CN 201310231482 A CN201310231482 A CN 201310231482A CN 103302305 A CN103302305 A CN 103302305A
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- reducing agent
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- amino acid
- glycine
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Abstract
The invention discloses a method for preparing silver nanowires through reduction of silver nitrate by using a biomolecular amino acid as a reducing agent in a liquid phase under a mild condition. The method comprises the following steps: preparing a AgNO3 solution at a certain concentration; adding a certain amount of glycine biomolecules into the AgNO3 solution; uniformly mixing the mixture with a shaker; putting the mixture into an incubator; after reacting for a certain period of time, collecting the obtained product; and observing a bent linear structure of the obtained product through a transmission electron microscope, with the length of 50-400 nm and the diameter of 20-30 nm. Compared with the prior art, the method has the advantages as follows: the reaction system is simple and feasible, the reaction condition is mild, and the cost is saved; the product has the characteristics of controllable morphology and particle size, high yield, clear structure and the like; and the biomolecules are used as the reducing agent, so that the method is environment-friendly.
Description
Technical field
The present invention relates to the preparation field of nano material, exactly refer to a kind of method of utilizing biomolecule amino acid to prepare nano silver wire for reducing agent.
Background technology
Nano silver grain with anisotropic structure, for example one dimension nano silver wire, silver nanoparticle rod etc., because its unique pattern causes it to have character such as unique optics, electricity, can be widely used in a plurality of fields such as medicine, catalysis, antibiotic, biology sensor material.The Nano silver grain of now synthetic various patterns is used chemical method more, for example photoreduction method, electrochemical reducing and liquid phase chemical reduction method etc.Wherein the liquid phase reduction operation is comparatively convenient, and the cost low yield is big, thereby is subjected to people's attention.
But according to the requirement of present social sustainable development, environmental protection is the problem that all trades and professions all will be paid attention to.Therefore, use various biological methods and prepare the trend that nano material will become future, this type of nano material product has more environment friendly and biocompatibility, in pharmaceutical engineering, biomedical will have very vast potential for future development as aspects such as oncotherapy, medicament transport, antibiotic and sterilizations.Therefore, the method that adopts liquid phase biological reducing legal system to be equipped with nano silver wire or rod will be the research emphasis of utilizing biological method production nano material on a large scale at present in conjunction with the environmental friendliness feature of the easy to operate and bioanalysis of liquid phase method.Obtain nano silver wire and utilize biomolecule amino acid to reduce silver salt under the condition of gentleness in liquid phase, because its simple and effective is a kind of method of significant, this method is not also seen open at present.
Summary of the invention
At above-mentioned defective, the technical problem that the present invention solves is to provide the method for utilizing biomolecule amino acid to prepare nano silver wire for reducing agent reduction silver nitrate under a kind of temperate condition in liquid phase.
In order to solve above technical problem, the biomolecule amino acid that utilizes provided by the invention the steps include: to prepare certain density AgNO for reducing agent prepares the method for nano silver wire
3Solution to wherein adding a certain amount of glycine biomolecule, is used the vortex mixer mixing, put into insulating box, collect products therefrom behind the reaction certain hour, present crooked linear structure by the transmission electron microscope observing products therefrom, length is 50～400nm, and diameter is 20～30nm.Wherein the glycine biomolecule has played the effect of reducing agent.
Preferably, the mol ratio of described glycine biomolecule and described silver nitrate is 0.5-2:1.
Preferably, the concentration of described liquor argenti nitratis ophthalmicus is 0.02mol/L-0.04mol/L.
Preferably, the concentration of glycine biomolecule is 0.01mol/L-0.08mol/L in the described reaction solution.
Preferably, the temperature in the described insulating box is 25 ℃, and the time is 20-24 hour.
Preferably, certain density AgNO3 solution to wherein adding a certain amount of glycine biomolecule, is used vortex mixer mixing 1 minute.
The used biomolecule of the present invention is glycine.Glycine is a kind of common natural biological molecule, to ecological nonhazardous, environmental protection, as reducing agent, glycine is not seen open in the application of silver nano material preparation field, through a large amount of experimental study of applicant, the present invention draws the glycine biomolecule and can be used as reducing agent reduction silver nitrate and prepare silver nano material, and can obtain having the linear structure of anisotropy pattern, respond well.
Beneficial effect of the present invention: the glycine biomolecule is as reducing agent, and common solution during very easily water-soluble grade is produced is conducive to infiltration in use; Environment and biology are not had toxic action, remedied the deficiency that existing chemical method is produced silver nano material; The glycine biomolecule also is simultaneously the template agent in this reaction system as reducing agent, can effectively control the pattern of silver nanoparticle product, obtains the one dimension nano silver wire; In addition, this reaction system is simple, and preparation is convenient, mild condition, as for the production of, can save cost greatly.
Description of drawings
Fig. 1 is glycine-AgNO in the embodiment of the invention 1
3The silver nanoparticle product transmission electron microscope photo of differential responses system;
Fig. 2 is glycine-AgNO in the embodiment of the invention 2
3The silver nanoparticle product transmission electron microscope photo of differential responses system;
Fig. 3 is glycine-AgNO in the embodiment of the invention 3
3The silver nanoparticle product transmission electron microscope photo of differential responses system.
The specific embodiment
For those skilled in the art can understand technical scheme provided by the present invention better, set forth below in conjunction with specific embodiment.
Embodiment 1
See also Fig. 1, this figure is the silver nanoparticle product transmission electron microscope photo of glycine in the embodiment of the invention 1-silver nitrate differential responses system.Glycine and silver nitrate mol ratio are respectively 2:1, AgNO
3Concentration is 0.03mol/L, and reaction temperature is 25 ° of C, and the reaction time is 24h.
The embodiment of the invention provides utilizes biomolecule amino acid to prepare the method for nano silver wire for reducing agent, and step is as follows:
(1) compound concentration is the AgNO of 0.03mol/L
3Solution, to wherein adding quantitative glycine biomolecule, making its concentration is 0.06mol/L, and with vortex mixer mixing 1min, putting into insulating box maintenance thermostat temperature is 25 ° of C, and the reaction time is 24h;
(2) collecting products therefrom, is crooked linear structure by transmission electron microscope observing gained primary product.The silver nanoparticle line length is 50～100nm, and diameter is about 20nm.
Embodiment 2
See also Fig. 2, this figure is the silver nanoparticle product transmission electron microscope photo of glycine in the embodiment of the invention 2-silver nitrate differential responses system.Glycine and silver nitrate mol ratio are respectively 1:1, AgNO
3Concentration is 0.03mol/L, and reaction temperature is 25 ° of C, and the reaction time is 20h.
The embodiment of the invention provides utilizes biomolecule amino acid to prepare the method for nano silver wire for reducing agent, and step is as follows:
(1) compound concentration is the AgNO of 0.03mol/L
3Solution, to wherein adding quantitative glycine biomolecule, making its concentration is 0.03mol/L, and with vortex mixer mixing 1min, putting into insulating box maintenance thermostat temperature is 25 ° of C, and the reaction time is 24h;
(2) collecting products therefrom, is crooked linear structure by transmission electron microscope observing gained primary product.The silver nanoparticle line length is 100～300nm, and diameter is about 30nm.
Embodiment 3
See also Fig. 3, this figure is the silver nanoparticle product transmission electron microscope photo of glycine in the embodiment of the invention 3-silver nitrate differential responses system.Glycine and silver nitrate mol ratio are respectively 1:2, AgNO
3Concentration is 0.03mol/L, and reaction temperature is 25 ° of C, and the reaction time is 22h.
The embodiment of the invention provides utilizes biomolecule amino acid to prepare the method for nano silver wire for reducing agent, and step is as follows:
(1) compound concentration is the AgNO of 0.03mol/L
3Solution, to wherein adding quantitative biomolecule amino acid A (being glycine), making its concentration is 0.015mol/L, and with vortex mixer mixing 1min, putting into insulating box maintenance thermostat temperature is 25 ° of C, and the reaction time is 24h;
(2) collecting products therefrom, is the mixture of the linear structure of spheroidal particle and bending by the transmission electron microscope observing products therefrom.The silver nanoparticle line length is 200～400nm, and diameter is about 30nm.
Embodiment 4
The embodiment of the invention provides utilizes biomolecule amino acid to prepare the method for nano silver wire for reducing agent, and step is as follows:
(1) compound concentration is the AgNO of 0.02mol/L
3Solution, to wherein adding quantitative biomolecule amino acid A (being glycine), making its concentration is 0.01mol/L, and with vortex mixer mixing 1min, putting into insulating box maintenance thermostat temperature is 25 ° of C, and the reaction time is 20h;
(2) collect products therefrom, be mainly spheroidal particle by the transmission electron microscope observing products therefrom.
Embodiment 5
The embodiment of the invention provides utilizes biomolecule amino acid to prepare the method for nano silver wire for reducing agent, and step is as follows:
(1) compound concentration is the AgNO of 0.04mol/L
3Solution, to wherein adding quantitative biomolecule amino acid A (being glycine), making its concentration is 0.08mol/L, and with vortex mixer mixing 1min, putting into insulating box maintenance thermostat temperature is 25 ° of C, and the reaction time is 22h;
(2) collecting products therefrom, is spheroidal particle by transmission electron microscope observing gained primary product.
Embodiment 6
The embodiment of the invention provides utilizes biomolecule amino acid to prepare the method for nano silver wire for reducing agent, and step is as follows:
(1) compound concentration is the AgNO of 0.02mol/L
3Solution, to wherein adding quantitative biomolecule amino acid A (being glycine), making its concentration is 0.08mol/L, and with vortex mixer mixing 1min, putting into insulating box maintenance thermostat temperature is 25 ° of C, and the reaction time is 24h;
(2) collecting products therefrom, is spheroidal particle by the transmission electron microscope observing products therefrom.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments herein.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (3)
1. one kind is utilized biomolecule amino acid for reducing agent prepares the method for nano silver wire, it is characterized in that, the steps include: to prepare certain density AgNO
3Solution to wherein adding a certain amount of glycine biomolecule, is used the vortex mixer mixing, put into insulating box, collect products therefrom behind the reaction certain hour, present crooked linear structure by the transmission electron microscope observing products therefrom, length is 50～400nm, and diameter is 20～30nm.
2. the biomolecule amino acid that utilizes according to claim 1 is characterized in that for reducing agent prepares the method for nano silver wire the mol ratio of described glycine biomolecule and described silver nitrate is 0.5-2:1.
3. the biomolecule amino acid that utilizes according to claim 2 is characterized in that for reducing agent prepares the method for nano silver wire the concentration of glycine biomolecule is 0.01mol/L-0.08mol/L in the described reaction solution; Temperature in the described insulating box is 25 ℃, and the time is 20-24 hour.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820066A (en) * | 2014-03-24 | 2014-05-28 | 安徽工业大学 | Method for preparing silver-based conductive adhesive |
| CN104562658A (en) * | 2015-01-21 | 2015-04-29 | 辽东学院 | Amino acid nano-silver modified finishing agent as well as preparation method of finishing agent and modified fishing shell fabric |
| CN113275584A (en) * | 2021-05-20 | 2021-08-20 | 苏州星翰新材料科技有限公司 | Micro-nano silver powder and preparation method and application thereof |
| CN113798505A (en) * | 2021-08-31 | 2021-12-17 | 中硕实业(上海)有限公司 | Silver nanowire containing lavender extract and preparation method and application thereof |
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| CN1341358A (en) * | 2000-09-07 | 2002-03-27 | 刘建忠 | Silver zinc combined antimicrobial agent |
| JP2002245854A (en) * | 2001-02-20 | 2002-08-30 | Bando Chem Ind Ltd | Colloidal solution of metal, and manufacturing method of the same |
| CN1871087A (en) * | 2003-08-28 | 2006-11-29 | 多摩-技术转让机关株式会社 | Precious metal colloid, precious metal microparticle, composition and process for producing the precious metal microparticle |
| US20090242231A1 (en) * | 2008-03-31 | 2009-10-01 | Fujifilm Corporation | Silver nanowire, production method thereof, and aqueous dispersion |
| CN102860325A (en) * | 2012-09-12 | 2013-01-09 | 江南大学 | Bactericidal nano-silver water gel and preparation method thereof |
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2013
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1341358A (en) * | 2000-09-07 | 2002-03-27 | 刘建忠 | Silver zinc combined antimicrobial agent |
| JP2002245854A (en) * | 2001-02-20 | 2002-08-30 | Bando Chem Ind Ltd | Colloidal solution of metal, and manufacturing method of the same |
| CN1871087A (en) * | 2003-08-28 | 2006-11-29 | 多摩-技术转让机关株式会社 | Precious metal colloid, precious metal microparticle, composition and process for producing the precious metal microparticle |
| US20090242231A1 (en) * | 2008-03-31 | 2009-10-01 | Fujifilm Corporation | Silver nanowire, production method thereof, and aqueous dispersion |
| CN102860325A (en) * | 2012-09-12 | 2013-01-09 | 江南大学 | Bactericidal nano-silver water gel and preparation method thereof |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103820066A (en) * | 2014-03-24 | 2014-05-28 | 安徽工业大学 | Method for preparing silver-based conductive adhesive |
| CN103820066B (en) * | 2014-03-24 | 2015-04-01 | 安徽工业大学 | Method for preparing silver-based conductive adhesive |
| CN104562658A (en) * | 2015-01-21 | 2015-04-29 | 辽东学院 | Amino acid nano-silver modified finishing agent as well as preparation method of finishing agent and modified fishing shell fabric |
| CN104562658B (en) * | 2015-01-21 | 2017-01-11 | 辽东学院 | Amino acid nano-silver modified finishing agent as well as preparation method of finishing agent and modified fishing shell fabric |
| CN113275584A (en) * | 2021-05-20 | 2021-08-20 | 苏州星翰新材料科技有限公司 | Micro-nano silver powder and preparation method and application thereof |
| CN113275584B (en) * | 2021-05-20 | 2023-11-14 | 苏州星翰新材料科技有限公司 | Micro-nano silver powder and preparation method and application thereof |
| CN113798505A (en) * | 2021-08-31 | 2021-12-17 | 中硕实业(上海)有限公司 | Silver nanowire containing lavender extract and preparation method and application thereof |
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| CN103302305B (en) | 2016-01-27 |
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Address after: 528100, No. 8 Le Qiang Road, Leping Town, Sanshui District, Guangdong, Foshan Applicant after: Foshan Tianbaoli Silicon Engineering Technology Co., Ltd. Address before: 528100, No. 37, D District, Sanshui Industrial Zone, Sanshui District, Guangdong, Foshan Applicant before: Foshan Tianbaoli Solar Energy Technology Co., Ltd. |
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