CN103143722B - Method for preparing multipod-like gold nanoparticles by chemical method - Google Patents
Method for preparing multipod-like gold nanoparticles by chemical method Download PDFInfo
- Publication number
- CN103143722B CN103143722B CN201310091782.XA CN201310091782A CN103143722B CN 103143722 B CN103143722 B CN 103143722B CN 201310091782 A CN201310091782 A CN 201310091782A CN 103143722 B CN103143722 B CN 103143722B
- Authority
- CN
- China
- Prior art keywords
- nanometer particle
- golden nanometer
- soybean peptide
- dtac
- chemical method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Peptides Or Proteins (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention relates to the technical field of nanoparticles preparation, in particular to a method for preparing multipod-like gold nanoparticles by a chemical method. Soybean peptide is used as a reducing agent; the soybean peptide and dodecyl trimethyl ammonium chloride are used as a protective agent; chloroauric acid is used as a raw material; surfactant is a cationic surface active agent, i.e. the dodecyl trimethyl ammonium chloride; and the morphology of nanogold is regulated and controlled through control on the concentration of the soybean peptide and the dodecyl trimethyl ammonium chloride. The method for preparing multipod-like gold nanoparticles by the chemical method has the following beneficial effects that (1) the spherical/multipod-like/flake-like gold nanoparticles can be obtained conveniently; (2) the produced gold nanoparticles have the characteristics of simplicity in operation and easiness in product separation, and the cost is decreased; and (3) the protective agent used for the method for preparing multipod-like gold nanoparticles by the chemical method can be removed in a simple washing and centrifuging way after the completion of reaction; and therefore, a final product contains less impurities and is high in purity.
Description
Technical field
The present invention relates to nano particle preparing technical field, particularly relate to a kind of method that chemical method prepares polypody shape golden nanometer particle.
Background technology
Golden nanometer particle really has special physical and chemical performance, as having high electron density, dielectric property and catalytic action, can be combined, and do not affect its biologically active with multiple large biological molecule.Can be prepared the nm of gold of various different-shape easily by chemical method by gold chloride, its pattern has significant impact for the physical and chemical performance of gold nano.
The special shape of golden nanometer particle and optical property, make it in food safety detection, catalysis, and the application of photoelectron device and biomedical aspect is more and more extensive, has very large using value.The method of synthesizing spherical or polypody shape golden nanometer particle is mainly by adding chemical reducing agent reduction chlorauride both at home and abroad at present, and these chemical reagent are easy to produce toxic action to environment, and integrated artistic more complicated.
Summary of the invention
The present invention is in order to overcome above-mentioned defect, and object is that providing a kind of is reducing agent with Soybean Peptide, and Soybean Peptide and DTAC are protective agent, take gold chloride as raw material, adopt chemical method to prepare spherical and method that is polypody shape golden nanometer particle.
To achieve these goals, the present invention adopts following technical scheme:
A kind of chemical method prepares the method for polypody shape golden nanometer particle; take Soybean Peptide as reducing agent; Soybean Peptide and DTAC are as protective agent; take gold chloride as raw material; surfactant is cationic surfactant DTAC; by controlling the pattern of the concentration regulation and control nm of gold of Soybean Peptide and DTAC, the step of concrete preparation is as follows:
(1) Soybean Peptide and DTAC are added to the water, being heated to 70 DEG C-90 DEG C makes it fully dissolve the rear aqueous solution with containing gold chloride, each component ultimate density in solution is respectively: gold chloride 0.2-1mmol/L, Soybean Peptide 0.5-20g/L, DTAC 0-20mmol/L;
(2) heat above-mentioned mixed solution and carry out reduction reaction 18-22h to 70-80 DEG C;
(3) reaction solution is used supercentrifuge centrifugation product after terminating by reaction, washes precipitation with water 2-5 time and obtains product, show that product is golden nanometer particle.
The heating-up temperature of above-mentioned steps (1) is 80 DEG C.
The reduction reaction time of above-mentioned steps (2) is 20h.
Described golden nanometer particle form is polypody shape, and has the golden nanometer particle of narrow ditribution feature.
In above-mentioned steps (3) high speed centrifuge separated product, the rotating speed of centrifuge is 1000-12000 r/min.
DTAC has another name called DTAC, gold chloride chemical formula is HAuCl
4.
Its principle is: the reducing power utilizing Soybean Peptide, and Soybean Peptide and DTAC, to the protection suction-operated of golden nanometer particle, regulate and control golden nanometer particle pattern; Will containing gold chloride (HAuCl
4) the aqueous solution mix according to a certain percentage with the aqueous solution containing Soybean Peptide and DTAC, at 70-80 DEG C, control Soybean Peptide, DTAC and HAuCl
4concentration, gold chloride is reduced into the golden nanometer particle of specific morphology.Product washes with water after centrifugation, obtains golden nanometer particle.The golden nanometer particle of the direct step chemical synthesis polypody shape of the method.
The present invention possesses following beneficial effect:
(1) golden nanometer particle of spherical, polypody shape and sheet can be obtained easily.
(2) golden nanometer particle produced has easy and simple to handle, separation of products and is easy to feature, reduces cost.
(3) protective agent used in the present invention after completion of the reaction can through simply washing and centrifugal removing, and therefore end-product impurities is few, purity is high.
Accompanying drawing explanation
Fig. 1 is polypody shape golden nanometer particle form 1;
Fig. 2 is the partial enlarged drawing of Fig. 1;
Fig. 3 is polypody shape golden nanometer particle form 2;
Fig. 4 is class color of spherical gold form 1;
Fig. 5 is polypody shape golden nanometer particle form 3.
Detailed description of the invention
Below in conjunction with accompanying drawing 1,2,3,4,5 specific embodiment, the invention will be further described, but the present invention is not limited to following examples.
Embodiment 1 prepares polypody shape golden nanometer particle
A certain amount of Soybean Peptide and DTAC are added to the water, are heated to 80 DEG C and make it fully dissolve the rear aqueous solution with containing gold chloride, each component ultimate density in solution is respectively: gold chloride 0.5mmol/L, Soybean Peptide 4g/L, DTAC 2mmol/L.Heating said solution to 70 DEG C carries out reduction reaction 18h.After reaction terminates, reaction solution is used supercentrifuge centrifugal (10,000 r/min) separated product, precipitation washes with water and obtains polypody shape golden nanometer particle for three times, and its average grain diameter is about 50nm.
Embodiment 2 prepares sea urchin shape golden nanometer particle
A certain amount of Soybean Peptide and DTAC are added to the water, are heated to 80 DEG C and make it fully dissolve the rear aqueous solution with containing gold chloride, each component ultimate density in solution is respectively: gold chloride 0.2mmol/L, Soybean Peptide 5g/L, DTAC 10mmol/L.Heating said solution to 70 DEG C carries out reduction reaction 20h.After reaction terminates, reaction solution is used supercentrifuge centrifugal (10,000 r/min) separated product, precipitation washes with water and obtains sea urchin shape golden nanometer particle for three times, and its average grain diameter is about 50nm.
Embodiment 3 prepares class color of spherical gold
A certain amount of Soybean Peptide and DTAC are added to the water, are heated to 80 DEG C and make it fully dissolve the rear aqueous solution with containing gold chloride, each component ultimate density in solution is respectively: gold chloride 0.4mmol/L, Soybean Peptide 10g/L.Heating said solution to 80 DEG C carries out reduction reaction 22h.After reaction terminates, reaction solution is used supercentrifuge centrifugal (12,000 r/min) separated product, precipitation washes three times with water and obtains color of spherical gold, and its average grain diameter is about 35nm.
Embodiment 4 prepares polypody shape golden nanometer particle
A certain amount of Soybean Peptide and DTAC are added to the water, are heated to 80 DEG C and make it fully dissolve the rear aqueous solution with containing gold chloride, each component ultimate density in solution is respectively: gold chloride 1 mmol/L, Soybean Peptide 2g/L, DTAC 20mmol/L.Heating said solution to 70 DEG C carries out reduction reaction 20h.After reaction terminates, reaction solution is used supercentrifuge centrifugal (12,000 r/min) separated product, precipitation washes with water and obtains polypody shape golden nanometer particle for three times, and its average grain diameter is about 40nm.
More than show and describe general principle of the present invention, principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (5)
1. prepare the method for polypody shape golden nanometer particle with chemical method for one kind; it is characterized in that: take Soybean Peptide as reducing agent; Soybean Peptide and DTAC are as protective agent; take gold chloride as raw material; surfactant is cationic surfactant DTAC; by controlling the pattern of the concentration regulation and control nm of gold of Soybean Peptide and DTAC, the step of concrete preparation is as follows:
(1) Soybean Peptide and DTAC are added to the water, being heated to 70 DEG C-90 DEG C makes it fully dissolve the rear aqueous solution with containing gold chloride, each component ultimate density in solution is respectively: gold chloride 0.2-1mmol/L, Soybean Peptide 0.5-20g/L, DTAC 2-20mmol/L;
(2) heat above-mentioned mixed solution and carry out reduction reaction 18-22h to 70-80 DEG C;
(3) reaction solution is used supercentrifuge centrifugation product after terminating by reaction, washes precipitation with water 2-5 time and obtains product, show that product is golden nanometer particle.
2. chemical method according to claim 1 prepares the method for polypody shape golden nanometer particle, it is characterized in that: the heating-up temperature of above-mentioned steps (1) is 80 DEG C.
3. chemical method according to claim 1 prepares the method for polypody shape golden nanometer particle, it is characterized in that: the reduction reaction time of above-mentioned steps (2) is 20h.
4. the method preparing polypody shape golden nanometer particle with chemical method according to claim 1 or 2 or 3, is characterized in that: described golden nanometer particle form is polypody shape, and has the golden nanometer particle of narrow ditribution feature.
5. chemical method according to claim 1 prepares the method for polypody shape golden nanometer particle, it is characterized in that: in above-mentioned steps (3) high speed centrifuge separated product, the rotating speed of centrifuge is 10000-12000 r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310091782.XA CN103143722B (en) | 2013-03-21 | 2013-03-21 | Method for preparing multipod-like gold nanoparticles by chemical method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310091782.XA CN103143722B (en) | 2013-03-21 | 2013-03-21 | Method for preparing multipod-like gold nanoparticles by chemical method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103143722A CN103143722A (en) | 2013-06-12 |
| CN103143722B true CN103143722B (en) | 2014-12-17 |
Family
ID=48542192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310091782.XA Expired - Fee Related CN103143722B (en) | 2013-03-21 | 2013-03-21 | Method for preparing multipod-like gold nanoparticles by chemical method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103143722B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104874812A (en) * | 2015-05-26 | 2015-09-02 | 成都易创思生物科技有限公司 | Preparation method of gold nanoparticles |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1332775C (en) * | 2005-07-07 | 2007-08-22 | 上海交通大学 | Gold nanometer particle grain size control method based on glutathione |
| US7905943B1 (en) * | 2008-01-08 | 2011-03-15 | The United States Of America As Represented By The Secretary Of The Air Force | Synthesis of hybrid inorganic nanoparticle structures using peptides |
| CN101875133B (en) * | 2010-05-31 | 2012-01-18 | 武汉大学 | Method for bionically preparing water-soluble gold nanoparticles |
| CN101875132B (en) * | 2010-05-31 | 2012-01-11 | 武汉大学 | Method for bionically preparing water-soluble gold nanoclusters |
| CN102211204B (en) * | 2011-05-06 | 2013-03-27 | 中国科学院化学研究所 | Method for preparing nano-gold |
-
2013
- 2013-03-21 CN CN201310091782.XA patent/CN103143722B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103143722A (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104070177B (en) | Preparation method for silver and gold nano-particles | |
| CN102225470A (en) | Method for preparing gold nanoparticles based on environmentally-friendly chemical method | |
| CN105502373B (en) | A kind of environment-friendly preparation method thereof of graphene | |
| CN103406546B (en) | The method of the flower-shaped golden nanometer particle of a kind of controlled synthesis | |
| CN103787344B (en) | A kind of water solublity mesoporous monox nanometer granule and its production and use | |
| CN105347401B (en) | A kind of method of the monodisperse mesoporous molybdenum disulfide nano ball of controllable standby | |
| CN103990814A (en) | Preparing method of gold nanoparticles | |
| CN105036178B (en) | A kind of preparation method of modified nano zinc oxide | |
| CN104307515A (en) | Au-Pd/graphene catalyst and preparation method and application thereof | |
| CN104028775A (en) | Preparation method for monodisperse uniform-particle-size silver nanoparticles | |
| CN105215347B (en) | A kind of Zinc Oxide and gold nano grain composite and preparation method thereof | |
| Le et al. | Controllable synthesis and visible-active photocatalytic properties of Au nanoparticles decorated urchin-like ZnO nanostructures | |
| CN105689701A (en) | Rapid preparation method of AU@Cu2O nanocomposite in yolk-shell structure | |
| CN104724756B (en) | A kind of one-step method prepares that size is controlled, the method for ad hoc structure barium oxide | |
| CN104625087A (en) | Method for hydrothermally manufacturing silver nanowires | |
| CN105834448B (en) | One-step method prepares Ag@TiO2Nanocomposite | |
| CN104439276A (en) | Method for fast preparing hollow porous silicon dioxide/silver nanoparticle composite and product | |
| CN103143722B (en) | Method for preparing multipod-like gold nanoparticles by chemical method | |
| CN106006656A (en) | Modified attapulgite nano particles and preparation method thereof | |
| CN105967241B (en) | One kind prepares Fe3O4The method of nanoscale magnetic bead | |
| CN103785851A (en) | Nanocrystalline metal elementary substance separation and redispersion method | |
| CN104551008A (en) | Adjustable spectrum gold nanoshell preparation method | |
| CN104259471A (en) | Method for preparing spherical silver nanoparticles uniform in particle size rapidly | |
| Wang et al. | Heterogeneous Ag-TiO2-SiO2 composite materials as novel catalytic systems for selective epoxidation of cyclohexene by H2O2 | |
| CN103601194B (en) | A method of regulation nano-silicon pattern and structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20150321 |
|
| EXPY | Termination of patent right or utility model |