CN1196554C - Preparation method of one-dimensional nano silver material - Google Patents
Preparation method of one-dimensional nano silver material Download PDFInfo
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- CN1196554C CN1196554C CN 02146181 CN02146181A CN1196554C CN 1196554 C CN1196554 C CN 1196554C CN 02146181 CN02146181 CN 02146181 CN 02146181 A CN02146181 A CN 02146181A CN 1196554 C CN1196554 C CN 1196554C
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- 239000000463 material Substances 0.000 title claims abstract description 34
- 238000002360 preparation method Methods 0.000 title claims abstract description 28
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title abstract description 8
- 108010010803 Gelatin Proteins 0.000 claims abstract description 38
- 229920000159 gelatin Polymers 0.000 claims abstract description 38
- 239000008273 gelatin Substances 0.000 claims abstract description 38
- 235000019322 gelatine Nutrition 0.000 claims abstract description 38
- 235000011852 gelatine desserts Nutrition 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 30
- 239000000243 solution Substances 0.000 claims description 59
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 claims description 30
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 18
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 16
- 229910001961 silver nitrate Inorganic materials 0.000 claims description 15
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 12
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 12
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 12
- 239000011259 mixed solution Substances 0.000 claims description 9
- CBCKQZAAMUWICA-UHFFFAOYSA-N 1,4-phenylenediamine Chemical compound NC1=CC=C(N)C=C1 CBCKQZAAMUWICA-UHFFFAOYSA-N 0.000 claims description 8
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical group NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 8
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 7
- 238000005119 centrifugation Methods 0.000 claims description 7
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 238000001035 drying Methods 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 150000007524 organic acids Chemical class 0.000 claims description 7
- 239000002244 precipitate Substances 0.000 claims description 7
- 238000001556 precipitation Methods 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 239000000725 suspension Substances 0.000 claims description 7
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- 239000004310 lactic acid Substances 0.000 claims description 6
- 235000014655 lactic acid Nutrition 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- NWZSZGALRFJKBT-KNIFDHDWSA-N (2s)-2,6-diaminohexanoic acid;(2s)-2-hydroxybutanedioic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O.NCCCC[C@H](N)C(O)=O NWZSZGALRFJKBT-KNIFDHDWSA-N 0.000 claims description 4
- 150000005208 1,4-dihydroxybenzenes Chemical class 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- IKDUDTNKRLTJSI-UHFFFAOYSA-N hydrazine monohydrate Substances O.NN IKDUDTNKRLTJSI-UHFFFAOYSA-N 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- 239000012279 sodium borohydride Substances 0.000 claims description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002070 nanowire Substances 0.000 abstract description 20
- 229910052751 metal Inorganic materials 0.000 abstract description 6
- 239000002184 metal Substances 0.000 abstract description 6
- 239000002086 nanomaterial Substances 0.000 abstract description 6
- 238000005354 coacervation Methods 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 239000002073 nanorod Substances 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000007787 solid Substances 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- 239000004065 semiconductor Substances 0.000 description 6
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000005291 magnetic effect Effects 0.000 description 3
- 239000006250 one-dimensional material Substances 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 229910000673 Indium arsenide Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- RPQDHPTXJYYUPQ-UHFFFAOYSA-N indium arsenide Chemical compound [In]#[As] RPQDHPTXJYYUPQ-UHFFFAOYSA-N 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 238000000608 laser ablation Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910005540 GaP Inorganic materials 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 239000002216 antistatic agent Substances 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 230000005292 diamagnetic effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002114 nanocomposite Substances 0.000 description 1
- 239000002159 nanocrystal Substances 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229920000620 organic polymer Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910000889 permalloy Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of preparation and application of metal photoelectric functional nano materials, and particularly relates to a preparation method of a one-dimensional nano silver material. Preparing a one-dimensional nano silver material by using the coacervation characteristic of gelatin and a metal salt reduction method, wherein the diameter of the obtained one-dimensional nano silver material is 10-300 nm; the length is 200 to 3000 nm. The method of the invention has the advantages of low energy consumption, high product purity and good dispersibility, and the sizes of the nano-wires and the nano-rods can be controlled by means of reaction conditions.
Description
Technical field
The invention belongs to the preparation and the applied technical field of metal photoelectric functional nano material, particularly relate to the preparation method of 1-dimention nano ag material.
Background technology
Silver has favorable conductive, heat conduction and reflecting properties in metal, and good chemical stability and ductility, thereby has extensive use in electronics industry.And nano silver particles is because surface-active and surface can be very high, and has special natures such as antistatic, diamagnetic, sterilization, catalysis, can be widely used in fields such as catalyst material, anti-static material, anti-biotic material, low temperature Heat Conduction Material and photon crystal material.
The nano material of one dimension is meant and is nanoscale that on two-dimensional direction length is more much bigger than the yardstick on the above-mentioned two-dimensional direction, even is the novel nano-material of maroscopic quantity.Aspect ratio (ratio of length and diameter) is little is nanometer rods, and aspect ratio is big is called nano wire.Semiconductor and metal nanometer line are commonly referred to quantum wire.
In recent years, the preparation research of monodimension nanometer material has been obtained remarkable progress.Be the synthetic method of some nano wires and nanometer rods below:
(1) CNT template.Because CNT is the one-dimensional material with hollow structure, available it do template and prepare the new class one-dimensional material, this is the advanced subject of present international research.For example utilize the capillarity of CNT some element can be inserted in the pipe, make the have special nature One-dimensional Quantum line of (as magnetic, superconductivity).See also article " CNT prepares nanostructured and nano combined metal oxide as removable template " (the Ajayan P.M. of nineteen ninety-five " nature " magazine 564-567 page or leaf, StephanO., Redlich Ph., Colllex C., Carbon nanotubes as removable templates for metaloxide nanocomposites and nanostructures, Nature, 1995,375:564-567).In recent years, successfully having adopted CNT is nano wire and the nanometer rods that template has been synthesized multiple carbide and nitride.
(2) the vapor-solid growth method of crystal.(Vapor-Solid, VS) method has prepared the MgO nano wire that aligns to the crystal vapor-solid growth of usefulness such as Harvard University poplars in 1997 modification.
(3) select electrodeposition process to prepare the magnetic metal nano wire.Usefulness selection electrodeposition processes such as Fasol had prepared magnetic permalloy nano wire in 1997.
(4) the gas-liquid-solid growth method IV family semiconductor nanowires of laser ablation and crystal.Morales of Harvard University in 1998 and Lieber have reported with laser ablation and have combined with gas-liquid-solid (VLS) method of crystal, the technology of growth Si and Ge nano wire.
(5) the metallo-organic compound vapour phase epitaxy combines with the gas-liquid-solid growth method of crystal and generates III-V compound semiconductor nano wire.HIT has reported with metallo-organic compound vapor phase epitaxial growth method (MOVPE) and has combined with gas-liquid-solid (VLS) growth method of crystal, growth GaAs and InAs nano wire.
(6) solution-liquid phase-solid state growth legal system is equipped with III-V family semiconductor nanowires.The Buhro of Washington, DC university etc. adopt solution-liquid phase-solid phase (SLS) method, and (165～203 ℃) have synthesized III-V compound semiconductor (InP, InAs, GaP, GaAs) nano wire at low temperatures.
(7) prepare silicon nanowires with the high-temperature laser evaporation.1998, Yu of Peking University roc etc. were adopted the synthetic Si nano wire of the method for excimer pulsed laser evaporation.
(8) simple physical evaporation preparation silicon nanowires.1998, Yu of Peking University roc etc. were successfully synthesized silicon nanowires with the simple physical evaporation.
(9) the synthetic GaN nano crystal silk of High Temperature Gas phase reaction.
(10) nanoscale drop epitaxy synthesizing silicon carbide nano wire.
Utilize that nano wire or nanometer rods and other materials are compound can prepare diversified nano complex, these artificial superstructure systems have good physical characteristic.For example: nano wire is put in the organic polymer (PCM-1), and the electricity of this system is led and can be improved two orders of magnitude.This has just opened up new situation for the application of nano material.
The preparation method of existing monodimension nanometer material mainly is the preparation semi-conducting material, and will use large-scale instrument mostly, at high temperature carry out, and complex process, cost is very high, is unfavorable for large-scale production.
Summary of the invention
The object of the present invention is to provide the method for the controlled 1-dimention nano ag material of a kind of preparation size at low temperatures.Adopt this method to boost productivity, reduce production costs, the 1-dimention nano silver diameter of preparing is 10～300nm, and length is 200～3000nm.
The objective of the invention is to be achieved through the following technical solutions:
Utilize the cohesion characteristic of gelatin, prepare the 1-dimention nano ag material with the slaine reducing process.
The step of concrete grammar is as follows:
(1). the preparation aqueous gelatin solution, the concentration of gelatin is 0.001～10 grams per liter, is preferably 0.01～10 grams per liter.
(2). the preparation silver nitrate aqueous solution, add ammoniacal liquor and make it become complex solution, the concentration of silver nitrate is 0.001～10 mol in the complex solution, is preferably 0.01～10 mol; The concentration of ammonia is 0.002～20 mol, is preferably 0.02～20 mol, this complex solution is joined in the gelatin solution of step (1), obtains mixed solution, and the volume ratio of gelatin solution and complex solution is 1: 0.1～1: 5.
(3). organic acid and reducing agent are added in the mixed solution that step (2) obtains, and making the organic acid concentration of mixing in the solution of back is 0.005～5 mol, is preferably 0.005～1 mol; The concentration of reducing agent is 0.1 * 10
-6～1 * 10
-2Mol is preferably 0.1 * 10
-5～1 * 10
-3Mol continues under the room temperature to stir 0.5～4 hour, obtains white suspension, and centrifugation again obtains white precipitate, after the gained precipitation drying, obtains the 1-dimention nano ag material, and diameter is 10～300nm, is preferably 20～260nm; Length is 200～3000nm, is preferably 300～2000nm.
Described organic acid comprises citric acid, lactic acid or acetic acid etc.
Described reducing agent comprises organic amine, polyol, hydrazine hydrate, sodium borohydride, hydroquinones, formaldehyde or they two or more mixture arbitrarily.
Described organic amine is formamide, p-phenylenediamine (PPD), 4-amino-N-ethyl-N-(Beta-methyl sulfonamide ethyl) meta-aminotoluene list water sulfate, triethanolamine or their any mixture.
Described polyol is isopropyl alcohol, ethylene glycol or their any mixture.
Purposes of the present invention: product purpose of the present invention is extensive, is high functional conductive, heat conduction and catalysis material, is widely used in fields such as catalyst material, battery electrode material, nanoelectronic circuits, sensor, nanometer robot and low temperature Heat Conduction Material.
Adopt 1-dimention nano ag material that method of the present invention obtains shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3.
Method of the present invention not only energy consumption is low, the product purity height, and good dispersion, and the size of nano wire and nanometer rods can be controlled by reaction condition.
The present invention mainly utilizes the coacervation of gelatin.The coacervation of gelatin is in room temperature or is lower than under the condition of room temperature that gelatin molecule produces to be assembled, and forms aggregation.The concentration that changes gelatin can be controlled the degree of cohesion.In addition, add special ion can promote cohesion in gelatin solution generation, as organic hydrochlorate.Utilize this phenomenon, the cohesion by gelatin gathers together Nano Silver, forms one-dimensional material.And by controlling the cohesion degree of gelatin, the size of control 1-dimention nano ag material.It is simple that the present invention prepares the method for 1-dimention nano ag material, is easy to apply.
What method of the present invention was significantly different with preparation method in the past is, in the present invention, the preparation of 1-dimention nano ag material is to carry out at low temperatures, and without large-scale instrument, thereby cost is very low, is fit to large-scale production.
Description of drawings
Fig. 1. the 1-dimention nano ag material electromicroscopic photograph of embodiments of the invention 1;
Fig. 2. the 1-dimention nano ag material electromicroscopic photograph of embodiments of the invention 2;
Fig. 3. the 1-dimention nano ag material electromicroscopic photograph of embodiments of the invention 3.
Specific embodiments
Embodiment 1
(1). the preparation aqueous gelatin solution, the concentration of gelatin is 0.05 grams per liter.
(2). the preparation silver nitrate aqueous solution, add ammoniacal liquor and make it become complex solution, the concentration of silver nitrate is 0.4 mol in the complex solution; The concentration of ammonia is 0.8 mol, this complex solution is joined in the gelatin solution of step (1), and the volume ratio of gelatin solution and complex solution is 1: 1.
(3). lactic acid and hydrazine hydrate are added in the mixed solution that step (2) obtains, and making the concentration of lactic acid of mixing in the solution of back is 0.1 mol; The concentration of hydrazine hydrate is 3.5 * 10
-5Mol continues under the room temperature to stir 1 hour, obtains white suspension, and centrifugation again obtains white precipitate, after the gained precipitation drying, obtains the 1-dimention nano ag material, and diameter is 70nm; Length is 1200nm.See accompanying drawing 1.
Embodiment 2
(1). the preparation aqueous gelatin solution, the concentration of gelatin is 0.1 grams per liter.
(2). the preparation silver nitrate aqueous solution, add ammoniacal liquor and make it become complex solution, the concentration of silver nitrate is 0.03 mol in the complex solution; The concentration of ammonia is 0.06 mol, this complex solution is joined in the gelatin solution of step (1), and the volume ratio of gelatin solution and complex solution is 1: 5.
(3). acetic acid and formaldehyde are added in the mixed solution that step (2) obtains, and making the concentration of mixing the acetic acid in the solution of back is 0.08 mol; The concentration of formaldehyde is 2.5 * 10
-4Mol continues under the room temperature to stir 2 hours, obtains white suspension, and centrifugation again obtains white precipitate, after the gained precipitation drying, obtains the 1-dimention nano ag material, and diameter is 30nm; Length is 436nm.See accompanying drawing 2.
Embodiment 3
(1). the preparation aqueous gelatin solution, the concentration of gelatin is 0.8 grams per liter.
(2). the preparation silver nitrate aqueous solution, add ammoniacal liquor and make it become complex solution, the concentration of silver nitrate is 3.5 mol in the complex solution; The concentration of ammonia is 7.0 mol, this complex solution is joined in the gelatin solution of step (1), and the volume ratio of gelatin solution and complex solution is 1: 0.5.
(3). lactic acid and formamide are added in the mixed solution that step (2) obtains, and making the concentration of lactic acid of mixing in the solution of back is 0.7 mol; The concentration of formamide is 0.6 * 10
-4Mol continues under the room temperature to stir 2.5 hours, obtains white suspension, and centrifugation again obtains white precipitate, after the gained precipitation drying, obtains the 1-dimention nano ag material, and diameter is 180nm; Length is 667nm.See accompanying drawing 3.
Embodiment 4
(1). the preparation aqueous gelatin solution, the concentration of gelatin is 2 grams per liters.
(2). the preparation silver nitrate aqueous solution, add ammoniacal liquor and make it become complex solution, the concentration of silver nitrate is 0.7 mol in the complex solution; The concentration of ammonia is 1.4 mol, this complex solution is joined in the gelatin solution of step (1), and the volume ratio of gelatin solution and complex solution is 1: 1.5.
(3). citric acid and hydroquinones are added in the mixed solution that step (2) obtains, and making the concentration of mixing the citric acid in the solution of back is 0.03 mol; The concentration of hydroquinones is 7.4 * 10
-5Mol continues under the room temperature to stir 4 hours, obtains white suspension, and centrifugation again obtains white precipitate, after the gained precipitation drying, obtains the 1-dimention nano ag material, and diameter is 90nm; Length is 850nm.
Embodiment 5
(1). the preparation aqueous gelatin solution, the concentration of gelatin is 0.35 grams per liter.
(2). the preparation silver nitrate aqueous solution, add ammoniacal liquor and make it become complex solution, the concentration of silver nitrate is 1.2 mol in the complex solution; The concentration of ammonia is 2.4 mol, this complex solution is joined in the gelatin solution of step (1), and the volume ratio of gelatin solution and complex solution is 1: 0.7.
(3). acetic acid and p-phenylenediamine (PPD) are added in the mixed solution that step (2) obtains, and making the concentration of mixing the acetic acid in the solution of back is 0.56 mol; The concentration of p-phenylenediamine (PPD) is 0.4 * 10
-3Mol continues under the room temperature to stir 0.5 hour, obtains white suspension, and centrifugation again obtains white precipitate, after the gained precipitation drying, obtains the 1-dimention nano ag material, and diameter is 62nm; Length is 1800nm.
Claims (9)
1. the preparation method of a 1-dimention nano ag material, it is characterized in that: the step of this method is as follows:
(1). the preparation aqueous gelatin solution, the concentration of gelatin is 0.001～10 grams per liter;
(2). the preparation silver nitrate aqueous solution, add ammoniacal liquor and make it become complex solution, the concentration of silver nitrate is 0.001～10 mol in the complex solution; The concentration of ammonia is 0.002～20 mol, this complex solution is joined in the gelatin solution of step (1), obtains mixed solution, and the volume ratio of gelatin solution and complex solution is 1: 0.1～1: 5;
(3). organic acid and reducing agent are added in the mixed solution that step (2) obtains, and making the organic acid concentration of mixing in the solution of back is 0.005～5 mol; The concentration of reducing agent is 0.1 * 10
-6～1 * 10
-2Mol continues under the room temperature to stir, and obtains white suspension, and centrifugation again obtains white precipitate, after the gained precipitation drying, obtains the 1-dimention nano ag material.
2. the method for claim 1 is characterized in that: the concentration of gelatin is 0.01～10 grams per liter in the described step (1).
3. the method for claim 1, it is characterized in that: the concentration of silver nitrate is 0.01～10 mol in described step (2) complex solution, and the concentration of ammonia is 0.02～20 mol.
4. the method for claim 1, it is characterized in that: described step (3) organic acid concentration is 0.005～1 mol; The concentration of reducing agent is 0.1 * 10
-5～1 * 10
-3Mol.
5. as claim 1 or 4 described methods, it is characterized in that: described organic acid comprises citric acid, lactic acid or acetic acid.
6. as claim 1 or 4 described methods, it is characterized in that: described reducing agent comprises organic amine, polyol, hydrazine hydrate, sodium borohydride, hydroquinones, formaldehyde or they two or more mixture arbitrarily.
7. method as claimed in claim 6 is characterized in that: described organic amine is formamide, p-phenylenediamine (PPD), 4-amino-N-ethyl-N-(Beta-methyl sulfonamide ethyl) meta-aminotoluene list water sulfate, triethanolamine or their any mixture.
8. method as claimed in claim 6 is characterized in that: described polyol is isopropyl alcohol, ethylene glycol or their any mixture.
9. the method for claim 1, it is characterized in that: the diameter of described 1-dimention nano ag material is 10～300mm; Length is 200～3000mm.
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| CN 02146181 CN1196554C (en) | 2002-11-01 | 2002-11-01 | Preparation method of one-dimensional nano silver material |
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|---|---|---|---|
| CN 02146181 CN1196554C (en) | 2002-11-01 | 2002-11-01 | Preparation method of one-dimensional nano silver material |
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| CN1196554C true CN1196554C (en) | 2005-04-13 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4636454B2 (en) * | 2003-05-13 | 2011-02-23 | 三菱マテリアル株式会社 | Manufacturing method and use of metal nanorods |
| CN101073830B (en) * | 2007-06-15 | 2010-05-19 | 东华大学 | Gelatin-silver nano-material production method |
| CN101161728B (en) * | 2007-09-21 | 2010-11-17 | 东华大学 | Gelatin-Ag nano compound having bacteriostasis efficacy and preparation method thereof |
| US8834965B2 (en) * | 2009-02-12 | 2014-09-16 | Xerox Corporation | Organoamine stabilized silver nanoparticles and process for producing same |
| RU2542238C2 (en) * | 2009-03-24 | 2015-02-20 | Басф Се | Producing moulded metal particles and use thereof |
| CN102327284B (en) * | 2009-08-11 | 2012-09-19 | 聊城大学 | Liquid-phase synthesis method of silver-chitosan and/or chitosan derivative nanocomposite |
| CN102019432A (en) * | 2010-10-15 | 2011-04-20 | 安徽师范大学 | Preparation method of metal icosahedral nanoparticles |
| CN103273078B (en) * | 2013-05-12 | 2015-01-07 | 山东理工大学 | Preparation method of anisotropy silver nanorod |
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