CN100431752C - Method for preparing single dispersion triangular nano silver slice - Google Patents
Method for preparing single dispersion triangular nano silver slice Download PDFInfo
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- CN100431752C CN100431752C CNB200610096565XA CN200610096565A CN100431752C CN 100431752 C CN100431752 C CN 100431752C CN B200610096565X A CNB200610096565X A CN B200610096565XA CN 200610096565 A CN200610096565 A CN 200610096565A CN 100431752 C CN100431752 C CN 100431752C
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- nano silver
- silver slice
- triangular nano
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- single dispersion
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Abstract
The present invention discloses a preparation method of monodisperse trigonal nano silver sheet. Said method includes the following steps: (1), preparing three-component solution system formed from water, PVP and n-pentanol; (2), adding 0.1-0.6% of alcohol solution of AgNO3 into the above-mentioned system under the condition of continuous stirring, then placing the above-mentioned material into a constant temperature oven to make heat treatment at 60-100deg.C; and (3), centrifugalizing the above-mentioned reaction solution so as to obtain the invented high-purity trigonal nano silver sheet whose average side length can be regulated in the range of 24-120nm.
Description
One, technical field
The present invention relates to a kind of preparation method's of metal nano material, particularly a kind of single dispersion triangular nano silver slice preparation method.
Two, background technology
Triangular nano silver slice have a wide range of applications at aspects such as photonic propulsion, optical pickocff, optical lens technology, biology labels owing to have unique plasma resonance optical property [seeing document: 1-17].Up to the present, total in the world photoinduction transforms [seeing document: 3-8], and thermodynamics changes [seeing document: 9-12], micellar solution method [seeing document: 13-16], and four class methods such as solvent-induced pattern evolution method [see document: 17] are used for preparing triangular nano silver slice.In the preparation method who has reported, have only photoinduction conversion method [see document: 4] can realize the continuously adjustable production of size with high-purity single dispersion triangular nano silver slice of good pattern, yet the light that requires in the preparation process of this method to have CF in entire reaction shines, and relies on to change the size that the irradiation light frequency is regulated products obtained therefrom.This requirement to equipment is very high, and has increased the difficulty of production operation, is unfavorable for industrialized production.{ document: [1] J.J.Mock, M.Barbic, D.R.Smith, D.A.Schultz, S.Schultz, J Phys.Chem 2002.116,6755; [2] K.L.Kelly.E.Coronado.L.L.Zhao.G.C.Schatz, J Phys Chem.B2003,107,668; [3] R.Jin, Y.Cao, C.A.Mirkin, K.L.Kelly, G.C.Schatz, J G.Zheng, Science2001,294,1901; [4] R.Jin, Y.C.Cao, E.Hao, G.S.M é traux, G.C.Schatz, C.A.Mirkin, Nature2003,294,487; [5] Y.Sun, Y.Xia, Adv Mater.2003,15,695; [6] A.Callegari, D.Tonti, M Chergui, Nano Lett 2003,3,1565; [7] B.Rodr í guez-Gonz á lez, I.Pastoriza-Santos, L.M.Liz-Marz á n, JPhys Chem B 2006,110,11796; [18] G.S.M é traux, Y.C.Cao, R.J.C.A.Mirkin, Nano Lett.2003,4,519; [9] I.Washio, Y.Xiong, Y.Ym, Y.Xia, Adv Mater.2006,18,1745; [10] I Pastoiiza-Santos, L.M Liz-Marz á n, Nano Lett 2002,2,903; [11] Y.Sun, B.Mayers, Y.Xia, Nano Lett.2003,3,675; [12] N.Okada, Y.Hamanaka.A Nakamura, I Pastoriza-Santos, L.M.Liz-Marz á n, J PhysChem B 2004,108,8752, [13] S Chen, D L.Carroll.Nano Lett.2002.9.1003; [14] S Chen, Z.Fan, D L Canoh, J Phys Chem B 2004,108 5500; [15] M Maillaid, S Gioigio, M-P Pilem, Adv Mater.2002,14,1084, [16] D O Yenei, J Sindel, C A Randall, J H Adan Langmun200218,8692; [17] L C Deivaraj.N L Laia, J.Y Lee, J Colloid Interface Sci 2005,289,402}.
Three, summary of the invention
1, goal of the invention: the preparation method who the purpose of this invention is to provide the triangular nano silver slice of the highly purified size adjustable that a kind of technology is simple, cost is low.
2, technical scheme: the preparation method of single dispersion triangular nano silver slice of the present invention may further comprise the steps:
(1) allocates the ternary solution system of forming by the n-amyl alcohol of the water of 1-8wt%, the PVP of 1-29wt% (polyethylene pyrrole Lip river ketone) and 70-98wt%, wherein, the solubility of PVP can obtain the target triangular nano silver slice of arbitrary average length of side in the 24-120 nanometer range in the regulation system;
(2) with the AgNO of the 0.1-0.6wt% of ternary solution system
3In the alcoholic solution adding system under agitation, put into insulating box 60-100 ℃ heat treatment after continuing to stir;
(3) promptly get highly purified triangular nano silver slice with heat treated reaction solution is centrifugal.
In step (2), the time of continuing to stir is 5-30 minute, and heat treatment period is 36-48.
This product can be dispersed in the different solvents standby according to different needs.
3, beneficial effect: the present invention compared with prior art has following remarkable advantage: the purity height of (1) prepared triangular nano silver slice, reach 90% approximately, and do not contain common impurity-spherical silver nano particle substantially.(2) prepared triangular nano silver slice surface carries the PVP protective agent, and stable performance is difficult for oxidative deformation in air He in the neutral flux.(3) can be according to practical requirement, prepared triangular nano silver slice can be adjusted to 120 nanometers with its average length of side from 24 nanometers continuously by the content that changes PVP simply.(4) can produce in a large number.(5) technology is simple, and very low to the equipment requirement, expense is cheap.
Four, description of drawings
Fig. 1 is the transmission electron microscope figure of the triangular nano silver slice of prepared six average length of sides of representativeness, wherein (a) 24 ± 4nm; (b) 36 ± 5nm; (c) 52 ± 5nm; (d) 72 ± 6nm; (e) 92 ± 9nm; (f) 120 ± 11nm.
Fig. 2 is the delustring spectrum of ethanolic solution of the triangular nano silver slice of eight average length of sides of representativeness, and wherein to point to the average length of side respectively be 24 ± 4nm to curve 1-8; 36 ± 5nm; 52 ± 5nm; 64 ± 6nm; 72 ± 6nm; 92 ± 9nm; The sample of 105 ± 10nm and 120 ± 11nm.
Fig. 3 is the photomacrograph of triangular nano silver slice ethanolic solution, wherein the triangular nano silver slice ethanolic solution of (a) representative visible light colors; (b) the triangular nano silver slice ethanolic solution of the Three Represents of a large amount of preparations.
Five, the specific embodiment
Embodiment 1: the average length of side is the preparation method of the triangular nano silver slice of 92 ± 9nm (Fig. 1 e), the steps include:
(1) in the reaction vessel of lid is arranged 480 milliliters of allotments contain water (6wt%)/PVP (K30,5wt%)/the ternary solution system of n-amyl alcohol (89wt%);
(2) with 24 milliliters of AgNO
3In (0.6wt% of ternary solution system) ethanolic solution adding system under agitation, continue to stir after 5 minutes and put into 95 ℃ of heat treatments of insulating box 48 hours;
(3) with the centrifugal high-purity triangular nano silver slice that promptly gets required size of heat treated reaction solution.
Embodiment 2: the average length of side is the preparation method of the triangular nano silver slice of 120 ± 11nm (Fig. 1 f), the steps include:
(1) in the reaction vessel of lid is arranged 480 milliliters of allotments contain (6wt%)/PVP (K30,7wt%)/the ternary solution system of n-amyl alcohol (87wt%);
(2) with 24 milliliters of AgNO
3(0.6wt%) in the ethanolic solution adding system under agitation, continue to stir after 5 minutes and put into 95 ℃ of heat treatments of insulating box 48 hours;
(3) with the centrifugal high-purity triangular nano silver slice that promptly gets required size of heat treated reaction solution.
Embodiment 3: the preparation method of triangular nano silver slice the steps include:
(1) in the reaction vessel of lid is arranged 480 milliliters of allotments contain water (1wt%)/PVP (K30,29wt%)/the ternary solution system of n-amyl alcohol (70wt%);
(2) with 24 milliliters of AgNO
3(0.1wt%) in the ethanolic solution adding system under agitation, continue to stir after 15 minutes and put into 60 ℃ of heat treatments of insulating box 30 hours;
(3) with the centrifugal high-purity triangular nano silver slice that promptly gets required size of heat treated reaction solution.
Embodiment 4: the preparation method of triangular nano silver slice the steps include:
(1) in the reaction vessel of lid is arranged 480 milliliters of allotments contain (8wt%)/PVP (K30,1wt%)/the ternary solution system of n-amyl alcohol (91wt%);
(2) with 24 milliliters of AgNO
3(0.4wt%) in the ethanolic solution adding system under agitation, continue to stir after 30 minutes and put into 100 ℃ of heat treatments of insulating box 36 hours;
(3) with the centrifugal high-purity triangular nano silver slice that promptly gets required size of heat treated reaction solution.
Embodiment 5: the preparation method of triangular nano silver slice the steps include:
(1) in the reaction vessel of lid is arranged 480 milliliters of allotments contain (1wt%)/PVP (K30,1wt%)/the ternary solution system of n-amyl alcohol (98wt%);
(2) with 24 milliliters of AgNO
3(0.5wt%) in the ethanolic solution adding system under agitation, continue to stir after 20 minutes and put into 80 ℃ of heat treatments of insulating box 45 hours;
(3) with the centrifugal high-purity triangular nano silver slice that promptly gets required size of heat treated reaction solution.
Claims (4)
1, a kind of preparation method of single dispersion triangular nano silver slice is characterized in that this method may further comprise the steps:
(1) allotment is formed the ternary solution system by water, PVP and n-amyl alcohol, and wherein the weight ratio of water is 1-8%, and the PVP weight ratio is 1-29%, and the n-amyl alcohol weight ratio is 70-98%;
(2) with the AgNO of the 0.1-0.6% of ternary solution system weight
3In the alcoholic solution adding system under agitation, put into insulating box 60-100 ℃ heat treatment after continuing to stir;
(3) promptly get highly purified triangular nano silver slice with heat treated reaction solution is centrifugal.
2, the preparation method of single dispersion triangular nano silver slice according to claim 1 is characterized in that in step (1), the solubility of PVP can obtain the target triangular nano silver slice of arbitrary average length of side in the 24-120 nanometer range in the regulation system.
3, the preparation method of single dispersion triangular nano silver slice according to claim 1 is characterized in that in step (2), described continuation mixing time is 5-30 minute.
4, the preparation method of single dispersion triangular nano silver slice according to claim 1 is characterized in that in step (2), heat treatment time is 36-48 hour.
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101249566B (en) * | 2008-03-31 | 2010-06-02 | 中国科学院物理研究所 | Preparation method of monodisperse silver nano |
| CN101947655B (en) * | 2010-10-25 | 2012-07-25 | 江苏技术师范学院 | Preparation method of triangular silver nanosheet |
| GB2486190A (en) * | 2010-12-06 | 2012-06-13 | P V Nano Cell Ltd | Concentrated dispersion of nanometric silver particles |
| CN103769601B (en) * | 2014-01-22 | 2016-04-27 | 清华大学 | The preparation method of triangle sheet nano-Ag particles |
| CN103909273B (en) * | 2014-03-12 | 2019-05-24 | 广州北峻工业材料有限公司 | A method of preparing the micro-nano silver powder of triangular shape |
| CN104841945B (en) * | 2015-04-17 | 2017-03-01 | 济南大学 | A kind of large scale silver thin slice and preparation method thereof |
| CN107414069B (en) * | 2017-08-07 | 2019-03-12 | 国家纳米科学中心 | Silver nanoparticle disk, preparation method and Gin Nanometer globoid and assembly using its preparation |
| CN109290588B (en) * | 2018-11-08 | 2021-11-16 | 南京大学 | Preparation method of monodisperse triangular nano silver |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174827C (en) * | 2001-08-17 | 2004-11-10 | 中国科学院过程工程研究所 | Preparation of hexagonal plate silver powder by chemical reduction process |
| WO2005042794A2 (en) * | 2003-03-14 | 2005-05-12 | Northwestern University | Triangular nanoframes and methods of making same |
| CN1709618A (en) * | 2005-07-08 | 2005-12-21 | 昆明理工大学 | Method for preparing nano or submicron silver powder |
| CN1263573C (en) * | 2003-09-28 | 2006-07-12 | 中国印钞造币总公司 | Method for preparing nano silver powder |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1174827C (en) * | 2001-08-17 | 2004-11-10 | 中国科学院过程工程研究所 | Preparation of hexagonal plate silver powder by chemical reduction process |
| WO2005042794A2 (en) * | 2003-03-14 | 2005-05-12 | Northwestern University | Triangular nanoframes and methods of making same |
| CN1263573C (en) * | 2003-09-28 | 2006-07-12 | 中国印钞造币总公司 | Method for preparing nano silver powder |
| CN1709618A (en) * | 2005-07-08 | 2005-12-21 | 昆明理工大学 | Method for preparing nano or submicron silver powder |
Non-Patent Citations (4)
| Title |
|---|
| Shape-Controlled Synthesis of Metal Nanostructures: TheCase of Silver. Benjamin Wiley, Yugang Sun, Brian Mayers, and YounanXia.Chem. Eur. J.,No.11. 2005 |
| Shape-Controlled Synthesis of Metal Nanostructures: TheCase of Silver. Benjamin Wiley, Yugang Sun, Brian Mayers, and YounanXia.Chem. Eur. J.,No.11. 2005 * |
| 三角形银纳米片的合成及其影响因素. 吴青松，赵岩，张彩碚.高等学校化学学报，第26卷第3期. 2005 |
| 三角形银纳米片的合成及其影响因素. 吴青松，赵岩，张彩碚.高等学校化学学报，第26卷第3期. 2005 * |
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