CN105965029A - Method for synthesizing water-soluble monodisperse spherical-like gold-silver alloy nano-particles - Google Patents

Method for synthesizing water-soluble monodisperse spherical-like gold-silver alloy nano-particles Download PDF

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CN105965029A
CN105965029A CN201610387543.2A CN201610387543A CN105965029A CN 105965029 A CN105965029 A CN 105965029A CN 201610387543 A CN201610387543 A CN 201610387543A CN 105965029 A CN105965029 A CN 105965029A
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sodium citrate
water
gold
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CN105965029B (en
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夏海兵
夏侯玉娇
陶绪堂
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Shandong University
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/16—Making metallic powder or suspensions thereof using chemical processes
    • B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
    • B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • B22F1/054—Nanosized particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/06—Metallic powder characterised by the shape of the particles
    • B22F1/065—Spherical particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00—Manufacture or treatment of nanostructures

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Abstract

The invention relates to a method for synthesizing water-soluble monodisperse spherical-like gold-silver alloy nano-particles. The method comprises the following steps: firstly, preparing sodium citrate, chloroauric acid, silver nitrate and ferrous sulfate into various solution respectively by utilizing ultrapure water; secondly, weighing the obtained sodium citrate solution (2 parts), chloroauric acid solution, silver nitrate solution and ferrous sulfate solution according a volume ratio of 40:7:(1-20):(0.88-17.5), and adding the chloroauric acid solution into boiling water; thirdly, sequentially adding one part of the sodium citrate solution and the ferrous sulfate solution into the boiling water containing the chloroauric acid solution to obtain a boiling mixed solution, mixing the other part of the sodium citrate solution with the silver nitrate solution for 3-7 min to obtain a mixture, and rapidly adding the mixture into the boiling mixed solution; and finally, keeping boiling, performing heating reflux for 1 h, and then cooling to room temperature, thereby obtaining the water-soluble monodisperse spherical-like gold-silver alloy nano-particles. The method provided by the invention is simple to operate. By adoption of the method, the high-quality, component-sized-adjustable, water-soluble, monodisperse and spherical-like gold-silver alloy nano-particles can be obtained.

Description

The synthetic method of the spherical gold-silver alloy nano particle of the scattered class of water-soluble mono
Technical field
The present invention relates to a kind of for synthesizing component size adjustable, water solublity, single dispersing, class spherical gold-silver alloy nano particle Method, the sodium citrate specifically utilizing ferrous ion to assist reduces gold chloride and silver nitrate to prepare homogeneous gold silver simultaneously The method of alloy nanoparticle, belongs to noble metal nano particles synthesis technical field.
Background technology
The noble metal granule sizes such as gold, silver are little to showing many special photoelectric properties during Nano grade, such as surface etc. from Sub-resonance effect etc..And these performances are strongly depend on the pattern of nano-particle, size and component.Gold silver nanometer particle is based on it Excellent surface plasma resonance effect, illustrates, in surface Raman enhancement is tested, the prospect of being widely applied, and improves detection spirit Sensitivity, achieve liquid detecting and Single Molecule Detection etc..For other metals, silver because of its prominent optical property and The Electromagnetic enhancement of visible region, is widely applied in the surface Raman enhancement test in the field such as chemistry and biology；But due to it Chemical stability is the best, and the detection in many adverse circumstances (such as strong acid, highly basic, oxide etc.) is considerably restricted.Phase Contrastingly, gold nano grain has excellent chemical stability, corrosion resistance and oxidation resistent susceptibility.Therefore design synthesis gold silver Alloy nanoparticle so that it is have the excellent optical property of silver nano-grain and the chemical stability of gold nano grain concurrently, to realize More it is widely applied.
In the more than ten years in past, the preparation about gold-silver alloy nano particle has many people to do substantial amounts of research, including ultrasonic Method, laser ablation method, photocatalytic method, chemical reduction method etc..But in the method for countless synthesis gold-silver alloy nano particle, The most only high temperature or multistep processes just can obtain the size adjustable gold-silver alloy nano particle of little scope, and is not suitable for large quantities of Amount produces.By the end of so far, by simple experiment condition and the step one-step synthesis the most adjustable gold silver of component size Alloy nanoparticle remains a great problem.Additionally, the part on gold-silver alloy nano particle surface is to its surface Raman enhancement performance Having a great impact, test can be caused powerful interference by poisonous organic ligand, and is unfavorable for that they are in the fields such as biomedicine Application.Sodium citrate is a kind of biocompatibility part, is easily replaced by other biomolecule, antibody etc., and will not be right Surface Raman enhancement test has any impact, so, the stable gold-silver alloy nano particle of sodium citrate part has vast Application prospect.
At present, in the various methods preparing gold-silver alloy nano particle with sodium citrate for part, due to the growth speed of Jin Heyin Rate is different, and the product obtained is often the mix products of the inhomogenous gold-silver alloy nano particle of component, pattern and size.Therefore, By the weak part of one-step synthesis method, component size is the most adjustable and the water-soluble mono of size uniformity scattered electrum nanometer Granule is a no small challenge.The solution of these problems certainly can significantly be widened gold-silver alloy nano particle and be cured at biology Learn the application of the aspects such as detection, sensor and surface Raman enhancement.
Summary of the invention
The present invention is directed to the deficiency that existing preparation gold-silver alloy nano particle technology exists, it is provided that one is simple to operate, synthesis is fast The synthetic method of the prompt water-soluble mono spherical gold-silver alloy nano particle of scattered class.
The synthetic method of the water-soluble mono spherical gold-silver alloy nano particle of scattered class of the present invention, comprises the following steps:
(1) use ultra-pure water by needed raw material sodium citrate (reducing agent, stabilizer), gold chloride (soluble precursor), nitre Acid silver (soluble silver salt) and ferrous sulfate (auxiliary additive) are configured to the sodium citrate that mass percent concentration is 1% respectively Silver nitrate solution and the molar concentration that chlorauric acid solution that solution, mass percent concentration are 1%, mass percent concentration are 1% It it is the copperas solution of 0.5 mM/l；
(2) ratio of 40:7:1-20:0.88-17.5 measures sodium citrate solution, chlorauric acid solution, nitric acid respectively by volume Silver solution and copperas solution, wherein sodium citrate solution weighs two parts by same ratio；
(3) by the volume ratio of chlorauric acid solution Yu ultra-pure water 1:537.14-560, chlorauric acid solution is joined in boiling water；
(4) a sodium citrate solution and copperas solution are sequentially added in the boiling water containing gold chloride, become boiling mixing Liquid；
(5) by after another part of sodium citrate solution and silver nitrate solution mixing 3-7 minute, it is rapidly added in boiling mixed liquor；
(6) keep boiling, after being heated to reflux 1 hour, be cooled to room temperature, i.e. obtain the water-soluble mono dispersion spherical electrum of class and receive Rice grain.
The present invention uses reduction of sodium citrate gold chloride that ferrous ion assists and silver nitrate to prepare component size adjustable, water-soluble Property, the spherical gold-silver alloy nano particle of single dispersing, class, compare other synthetic method, and the method is simple to operate, it is possible to obtain Other existing method cannot obtain high-quality, component size adjustable, water solublity, monodispersed class spherical electrum nanometer Granule.
Accompanying drawing explanation
Fig. 1 is the transmission electron microscope photo of the water-soluble mono spherical gold-silver alloy nano particle of scattered class that the present invention synthesizes.
Wherein: (a)-(h) be respectively embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5, embodiment 6, Particle diameter respectively 10 nanometer that embodiment 7 and embodiment 8 obtain, 11 nanometers, 16 nanometers, 25 nanometers, 30 nanometers, 46 receive The transmission electron microscope photo of the water-soluble mono spherical gold-silver alloy nano particle of scattered class of rice, 64 nanometers and 80 nanometers.
Detailed description of the invention
Embodiment 1
First glass drying oven used (twoport flask and the serum bottle of 5 milliliters) is put into after newly configured chloroazotic acid soaks 2 hours, Clean with sodium nitrate saturated solution and ultra-pure water, dry for standby.
Ultra-pure water is used needed raw material sodium citrate, gold chloride, silver nitrate and ferrous sulfate to be each configured to solution, wherein The mass percent concentration of sodium citrate solution is 1%, and the mass percent concentration of chlorauric acid solution is 1%, silver nitrate solution Mass percent concentration is 1%, and the molar concentration of copperas solution is 0.5 mM/l.
The ratio of 40:7:1:17.5 weighs sodium citrate solution 0.5 milliliter (two parts), chlorauric acid solution 87.5 respectively by volume Microlitre, silver nitrate solution 12.5 microlitre and copperas solution 218.8 microlitre.
Twoport flask is fixed on warm table and adds the ultra-pure water of 47-49 milliliter, and (chlorauric acid solution with ultra-pure water volume ratio is 1:537.14-560), it is heated rapidly to 100 degrees Celsius of backflows；The chlorauric acid solution of 87.5 microlitres is added in boiling water；Then Successively 0.5 milliliter of sodium citrate solution and 218.8 microlitre copperas solutions are added in the boiling water containing gold chloride；By 0.5 milli After rising sodium citrate solution and 12.5 microlitre silver nitrate solution mixing 3-7 minute, it is rapidly added in the mixed liquor of boiling；Ensure anti- Answering cumulative volume is 50 milliliters, keeps boiling, after being heated to reflux 1 hour, is cooled to room temperature, and can obtain particle diameter is 10 nanometers The spherical gold-silver alloy nano particle of the scattered class of water-soluble mono.
In the transmission electron microscope photo such as Fig. 1 of the water-soluble mono spherical gold-silver alloy nano particle of scattered class that the present embodiment obtains (a) Shown in.
Embodiment 2
The present embodiment difference from Example 1 be the consumption of silver nitrate solution be 25 microlitres, make sodium citrate solution, gold chloride The volume ratio of solution, silver nitrate solution and copperas solution be 40:7:2:17.5 (0.5 milliliter, 87.5 microlitres, 25 microlitres and 218.8 microlitres).
Remaining condition is the most same as in Example 1, can obtain the monodispersed class of particle diameter 11 nano-water soluble spherical electrum nanometer Granule, in its transmission electron microscope photo such as Fig. 1 shown in (b).
Embodiment 3
The present embodiment difference from Example 1 be the consumption of silver nitrate be 50 microlitres, make sodium citrate solution, gold chloride molten The volume ratio of liquid, silver nitrate solution and copperas solution be 40:7:4:17.5 (0.5 milliliter, 87.5 microlitres, 50 microlitres and 218.8 microlitres).
Remaining condition is the most same as in Example 1, can obtain the scattered class of the water-soluble mono spherical electrum nanometer of particle diameter 16 nanometer Granule, shown in its transmission electron microscope photo such as Fig. 1 (c).
Embodiment 4
The present embodiment difference from Example 1 one be the consumption of silver nitrate be 50 microlitres, two is that the consumption of copperas solution is 65.7 microlitres, the volume ratio making sodium citrate solution, chlorauric acid solution, silver nitrate solution and copperas solution is 40:7:4:5.26 (0.5 milliliter, 87.5 microlitres, 50 microlitres and 65.7 microlitres).
Remaining condition is the most same as in Example 1, can obtain the scattered class of the water-soluble mono spherical electrum nanometer of particle diameter 25 nanometer Granule, shown in its transmission electron microscope photo such as Fig. 1 (d).
Embodiment 5
The present embodiment difference from Example 1 one be the consumption of silver nitrate be 50 microlitres, two is that the consumption of copperas solution is 43.8 microlitres, the volume ratio making sodium citrate solution, chlorauric acid solution, silver nitrate solution and copperas solution is 40:7:4:3.5 (0.5 milliliter, 87.5 microlitres, 50 microlitres and 43.8 microlitres).
Remaining condition is the most same as in Example 1, can obtain the scattered class of the water-soluble mono spherical electrum nanometer of particle diameter 30 nanometer Granule, shown in its transmission electron microscope photo such as Fig. 1 (e).
Embodiment 6
The present embodiment difference from Example 1 one be the consumption of silver nitrate be 250 microlitres, two is the consumption of copperas solution Being 43.8 microlitres, the volume ratio making sodium citrate solution, chlorauric acid solution, silver nitrate solution and copperas solution is 40:7:20:3.5 (0.5 milliliter, 87.5 microlitres, 250 microlitres and 43.8 microlitres).
Remaining condition is the most same as in Example 1, can obtain the scattered class of the water-soluble mono spherical electrum nanometer of particle diameter 46 nanometer Granule, shown in its transmission electron microscope photo such as Fig. 1 (f).
Embodiment 7
The present embodiment difference from Example 1 one be the consumption of silver nitrate be 250 microlitres, two is the consumption of copperas solution Being 21.9 microlitres, the volume ratio making sodium citrate solution, chlorauric acid solution, silver nitrate solution and copperas solution is 40:7:20:1.75 (0.5 milliliter, 87.5 microlitres, 250 microlitres and 21.9 microlitres).
Remaining condition is the most same as in Example 1, can obtain the scattered class of the water-soluble mono spherical electrum nanometer of particle diameter 64 nanometer Granule, shown in its transmission electron microscope photo such as Fig. 1 (g).
Embodiment 8
The present embodiment difference from Example 1 one be the consumption of silver nitrate be 250 microlitres, two is the consumption of copperas solution Being 10.9 microlitres, the volume ratio making sodium citrate solution, chlorauric acid solution, silver nitrate solution and copperas solution is 40:7: 20:0.88 (0.5 milliliter, 87.5 microlitres, 250 microlitres and 10.9 microlitres).
Remaining condition is the most same as in Example 1, and the water-soluble mono spherical electrum of scattered class that can obtain particle diameter 80 nanometer is received Rice grain, shown in its transmission electron microscope photo such as Fig. 1 (h).

Claims (1)

1. a synthetic method for the spherical gold-silver alloy nano particle of the scattered class of water-soluble mono, is characterized in that: comprise the following steps:
(1) use ultra-pure water that needed raw material sodium citrate, gold chloride, silver nitrate and ferrous sulfate are configured to percent mass respectively Chlorauric acid solution, mass percent concentration that sodium citrate solution that specific concentration is 1%, mass percent concentration are 1% are 1% Silver nitrate solution and the copperas solution that molar concentration is 0.5 mM/l；
(2) ratio of 40:7:1-20:0.88-17.5 measures sodium citrate solution, chlorauric acid solution, nitric acid respectively by volume Silver solution and copperas solution, wherein sodium citrate solution weighs two parts by same ratio；
(3) by the volume ratio of chlorauric acid solution Yu ultra-pure water 1:537.14-560, chlorauric acid solution is joined in boiling water；
(4) a sodium citrate solution and copperas solution are sequentially added in the boiling water containing gold chloride, become boiling mixing Liquid；
(5) by after another part of sodium citrate solution and silver nitrate solution mixing 3-7 minute, it is rapidly added in boiling mixed liquor；
(6) keep boiling, after being heated to reflux 1 hour, be cooled to room temperature, i.e. obtain the water-soluble mono dispersion spherical electrum of class and receive Rice grain.
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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106694901A (en) * 2016-12-27 2017-05-24 燕山大学 Preparation of silver-gold alloy nanometer spherical shell based on vapreotide acetate
CN106784880A (en) * 2017-01-19 2017-05-31 山东大学 The synthetic method of water-soluble one-dimensional rhotanium nano wire
CN108213460A (en) * 2018-03-16 2018-06-29 西北大学 A kind of microwave preparation of monodispersed gold-silver alloy nano particle
CN109060768A (en) * 2018-10-23 2018-12-21 江南大学 A method of based on Surface enhanced Raman spectroscopy trace detection erythrosine concentration
CN113084187A (en) * 2021-04-01 2021-07-09 合肥工业大学 Preparation method and application of gold, silver and palladium three-metal peroxide mimic enzyme
CN114523120A (en) * 2021-12-31 2022-05-24 华东理工大学 Preparation method of metal alloy nano-cluster particles

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006045655A (en) * 2004-08-09 2006-02-16 Mitsubishi Materials Corp Silver nanoparticle and production method therefor
CN101312800A (en) * 2005-12-08 2008-11-26 住友金属矿山株式会社 Liquid colloidal dispersion of silver particles, coating liquid for forming silver film, manufacturing method and silver film
CN101844231A (en) * 2010-06-23 2010-09-29 黑龙江大学 Method for preparing noble metal self-organized colloidal crystal
CN102806358A (en) * 2012-08-30 2012-12-05 山东大学 Synthesis method of water-soluble monodisperse spherical silver nanocrystals
CN103128309A (en) * 2013-03-14 2013-06-05 山东大学 Synthetic method of water-solubility biocompatibility monodisperse spherical gold nanometer crystals
CN104942302A (en) * 2015-05-25 2015-09-30 贵研铂业股份有限公司 Preparing method for silver nano-wire with adjustable diameter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006045655A (en) * 2004-08-09 2006-02-16 Mitsubishi Materials Corp Silver nanoparticle and production method therefor
CN101312800A (en) * 2005-12-08 2008-11-26 住友金属矿山株式会社 Liquid colloidal dispersion of silver particles, coating liquid for forming silver film, manufacturing method and silver film
CN101844231A (en) * 2010-06-23 2010-09-29 黑龙江大学 Method for preparing noble metal self-organized colloidal crystal
CN102806358A (en) * 2012-08-30 2012-12-05 山东大学 Synthesis method of water-soluble monodisperse spherical silver nanocrystals
CN103128309A (en) * 2013-03-14 2013-06-05 山东大学 Synthetic method of water-solubility biocompatibility monodisperse spherical gold nanometer crystals
CN104942302A (en) * 2015-05-25 2015-09-30 贵研铂业股份有限公司 Preparing method for silver nano-wire with adjustable diameter

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106694901A (en) * 2016-12-27 2017-05-24 燕山大学 Preparation of silver-gold alloy nanometer spherical shell based on vapreotide acetate
CN106694901B (en) * 2016-12-27 2018-12-28 燕山大学 One kind preparing silver-colored billon nano ball shell based on acetic acid Vapreotide
CN106784880A (en) * 2017-01-19 2017-05-31 山东大学 The synthetic method of water-soluble one-dimensional rhotanium nano wire
CN106784880B (en) * 2017-01-19 2019-06-28 山东大学 The synthetic method of water-soluble one-dimensional rhotanium nano wire
CN108213460A (en) * 2018-03-16 2018-06-29 西北大学 A kind of microwave preparation of monodispersed gold-silver alloy nano particle
CN109060768A (en) * 2018-10-23 2018-12-21 江南大学 A method of based on Surface enhanced Raman spectroscopy trace detection erythrosine concentration
CN113084187A (en) * 2021-04-01 2021-07-09 合肥工业大学 Preparation method and application of gold, silver and palladium three-metal peroxide mimic enzyme
CN114523120A (en) * 2021-12-31 2022-05-24 华东理工大学 Preparation method of metal alloy nano-cluster particles
CN114523120B (en) * 2021-12-31 2024-03-26 华东理工大学 Preparation method of metal alloy nano cluster particles

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