CN101195172A - Method for simply and rapidly producing (Au) nucleus and (Ag) shell nanoparticle - Google Patents
Method for simply and rapidly producing (Au) nucleus and (Ag) shell nanoparticle Download PDFInfo
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- CN101195172A CN101195172A CNA2007100487027A CN200710048702A CN101195172A CN 101195172 A CN101195172 A CN 101195172A CN A2007100487027 A CNA2007100487027 A CN A2007100487027A CN 200710048702 A CN200710048702 A CN 200710048702A CN 101195172 A CN101195172 A CN 101195172A
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Abstract
The invention discloses a process for rapidly and conveniently preparing (Au) nuclear (Ag) shell nanometer particles, which comprises adding gold nanometer sol into quantitative mixed solution of sodium citrate and silver nitrate, adding additionally distilled water and shakening up, reacting in constant temperature water bath for a certain time, taking out, and cooling, and thereby brown red (Au) nuclear (Ag) shell composite nanometer particles are prepared. The invention has the advantages that the process for preparation is simple and rapid, reaction conditions are temperate, agents are easy to be obtained, cost is low, and composite nanometer particles which are prepared has both good monodispersity of gold nanometers and high SERS effects of silver nanometer sol.
Description
Technical field:
The present invention relates to the preparation method of nanoparticle, specifically a kind of easy quick preparation (Au)
Nuclear(Ag)
ShellThe method of nanoparticle.
Background technology:
Composite nano materials with nucleocapsid structure is a research field that becomes more and more important in material science forward position recent years.This class material has the character of many uniquenesses, and for example: monodispersity, the operability of nucleocapsid, stability, Modulatory character, self assembly and relate to light, electricity, magnetic, catalysis, chemistry and biological respinse ability have broad application prospects.At present, the method for preparing the Au-Ag composite nano particle is a lot, is template with the colloidal particle mainly, and electronation prepares core-shell nano.In these methods, have plenty of the method step complexity, it is strict to have plenty of reaction condition, has strengthened the difficulty of promoting.
Summary of the invention:
The objective of the invention is to disclose a kind of easy quick preparation (Au)
Nuclear(Ag)
ShellThe method of nanoparticle.
The easy quick preparation of the present invention (Au)
Nuclear(Ag)
ShellThe method of nanoparticle comprises the steps:
In trisodium citrate and silver nitrate mixed liquor, add gold nano colloidal sol, add distilled water again and shake up, after the water bath with thermostatic control reaction, take out cooling, promptly make brownish red (Au)
Nuclear(Ag)
ShellThe particle nanoparticle.
The ratio of the trisodium citrate of described adding and liquor argenti nitratis ophthalmicus and gold nano colloidal sol is:
0.1-2.0∶0.1-2.0∶1-6。
Described thermostat temperature is 60-100 ℃.
The described reaction time is 5-50min.
The ultraviolet-visible absorption spectroscopy of the Au-Ag composite nano particle that makes has stronger absworption peak about wavelength 400nm; Its resonance scattering spectroscopy has stronger scattering peak at 580-600nm wavelength place.
Advantage of the present invention is: the preparation method is easy fast, the reaction condition gentleness, and reagent is easy to get, and is with low cost, and the composite nano particle that makes had both had the extraordinary monodispersity of golden nanometer particle, and the high SERS effect of silver-colored Nano sol is arranged again.
Description of drawings:
Fig. 1 is (Au)
Nuclear(Ag)
ShellThe ultraviolet-visible absorption spectroscopy figure of composite nano particle;
Fig. 2 is (Au)
Nuclear(Ag)
ShellThe resonance light scattering spectrogram of composite nano particle.
The specific embodiment:
The invention will be further elaborated below in conjunction with drawings and Examples:
A kind of easy quick preparation (Au)
Nuclear(Ag)
ShellThe method of nanoparticle comprises the steps:
(1) makes gold nano solution with the Frens method: accurately pipette 1ml 1% chlorauric acid solution in the 250ml conical flask, add redistilled water to the about 100ml of volume, be heated to and boil, the citric acid three sodium solution that adds 6ml 1%, after boiling 15min, the running water cooling changes constant volume in the 100ml volumetric flask over to, makes the gold nano particulate that particle diameter is 9nm;
(2) in the 10ml colorimetric cylinder, add 2 * 10
-3Mol/LAgNO
3Solution 0.1-2.0ml, 1% citric acid three sodium solution 0.1-2.0ml and above-mentioned gold nano colloidal sol 1-6ml add first water and are settled to 10ml, and 60-100 ℃ of water-bath 5min takes out cooling, promptly makes brownish red (Au)
Nuclear(Ag)
ShellNanoparticle.
Claims (5)
1. easy quick preparation (Au)
Nuclear(Ag)
ShellThe method of nanoparticle is characterized in that comprising the steps:
In the mixed solution of trisodium citrate and silver nitrate, add gold nano colloidal sol, add distilled water again and shake up, behind the water bath with thermostatic control reaction certain hour, take out cooling, promptly make henna (Au)
Nuclear(Ag)
ShellComposite nano particle.
2. easy quick preparation according to claim 1 (Au)
Nuclear(Ag)
ShellThe method of nanoparticle is characterized in that: gold nano colloidal sol is made by the Frens method.
3. easy quick preparation according to claim 1 (Au)
Nuclear(Ag)
ShellThe method of nanoparticle is characterized in that: the additional proportion of trisodium citrate, silver nitrate, gold nano colloidal sol is 0.1-2.0: 0.1-2.0: 1-6.
4. easy quick preparation according to claim 1 (Au)
Nuclear(Ag)
ShellThe method of nanoparticle is characterized in that: the temperature of water bath with thermostatic control is 60-100 ℃.
5. easy quick preparation according to claim 1 (Au)
Nuclear(Ag)
ShellThe method of nanoparticle is characterized in that: the water bath with thermostatic control reaction time is 5-50 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100487027A CN101195172A (en) | 2007-03-17 | 2007-03-17 | Method for simply and rapidly producing (Au) nucleus and (Ag) shell nanoparticle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100487027A CN101195172A (en) | 2007-03-17 | 2007-03-17 | Method for simply and rapidly producing (Au) nucleus and (Ag) shell nanoparticle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101195172A true CN101195172A (en) | 2008-06-11 |
Family
ID=39545903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100487027A Pending CN101195172A (en) | 2007-03-17 | 2007-03-17 | Method for simply and rapidly producing (Au) nucleus and (Ag) shell nanoparticle |
Country Status (1)
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| CN (1) | CN101195172A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010016798A1 (en) * | 2008-08-06 | 2010-02-11 | Agency For Science, Technology And Research | Nanocomposites |
| CN102059346A (en) * | 2010-12-08 | 2011-05-18 | 厦门大学 | Method for preparing aurum-manganese dioxide nuclear shell structure nano particle |
| CN104128615A (en) * | 2014-08-01 | 2014-11-05 | 武汉大学 | Method for preparing substrate material with high-activity surface-enhanced Raman scattering and silk-screen printing method |
| CN104308184A (en) * | 2014-10-24 | 2015-01-28 | 武汉理工大学 | Method for preparing Au-Ag (gold-silver) nuclear shell nano particles by visible light |
| CN107225235A (en) * | 2017-06-02 | 2017-10-03 | 宁波大学 | A kind of gold/silver/polymer/silver core-shell nano mushroom material with SERS activity and its preparation method and application |
-
2007
- 2007-03-17 CN CNA2007100487027A patent/CN101195172A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010016798A1 (en) * | 2008-08-06 | 2010-02-11 | Agency For Science, Technology And Research | Nanocomposites |
| US20110287259A1 (en) * | 2008-08-06 | 2011-11-24 | Agency For Science Technology And Research | Nanocomposites |
| US8632884B2 (en) | 2008-08-06 | 2014-01-21 | Agency For Science, Technology And Research | Nanocomposites |
| CN102059346A (en) * | 2010-12-08 | 2011-05-18 | 厦门大学 | Method for preparing aurum-manganese dioxide nuclear shell structure nano particle |
| CN102059346B (en) * | 2010-12-08 | 2012-10-03 | 厦门大学 | Method for preparing aurum-manganese dioxide nuclear shell structure nano particle |
| CN104128615A (en) * | 2014-08-01 | 2014-11-05 | 武汉大学 | Method for preparing substrate material with high-activity surface-enhanced Raman scattering and silk-screen printing method |
| CN104128615B (en) * | 2014-08-01 | 2016-04-13 | 武汉大学 | A kind of have preparation and the method for printing screen that high activity surface strengthens the base material of Ramam effect |
| CN104308184A (en) * | 2014-10-24 | 2015-01-28 | 武汉理工大学 | Method for preparing Au-Ag (gold-silver) nuclear shell nano particles by visible light |
| CN104308184B (en) * | 2014-10-24 | 2016-08-24 | 武汉理工大学 | A kind of visible ray prepares the method for Au-Ag core-shell nano |
| CN107225235A (en) * | 2017-06-02 | 2017-10-03 | 宁波大学 | A kind of gold/silver/polymer/silver core-shell nano mushroom material with SERS activity and its preparation method and application |
| CN107225235B (en) * | 2017-06-02 | 2019-03-12 | 宁波大学 | One kind having the active gold/silver of SERS/polymer/silver core-shell nano mushroom material and its preparation method and application |
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Open date: 20080611 |