CN104275492A - Sugarcoated-haws-on-stick shaped one-dimensional gold nano-particle preparation method - Google Patents
Sugarcoated-haws-on-stick shaped one-dimensional gold nano-particle preparation method Download PDFInfo
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- CN104275492A CN104275492A CN201310272605.1A CN201310272605A CN104275492A CN 104275492 A CN104275492 A CN 104275492A CN 201310272605 A CN201310272605 A CN 201310272605A CN 104275492 A CN104275492 A CN 104275492A
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Abstract
The invention discloses a sugarcoated-haws-on-stick shaped one-dimensional gold nano-particle preparation method. The preparation method comprises the steps of using an anionic surfactant-biomolecule A-HAuC14 mixed system as a reaction system, performing reaction at room temperature to produce one-dimensional sugarcoated-haws-on-stick shaped gold nano-particles. The sugarcoated-haws-on-stick shaped one-dimensional gold nano-particle preparation method has the advantages that the reaction system is simple and easy to operate and moderate in condition; a reducing agent is bio-molecules and has the environment-friendly characteristic; a product is controllable in shape and particle size, large in yield and clear in structure and the like.
Description
Technical field
The present invention relates to a kind of preparation method of one dimension golden nanometer particle, particularly relate to a kind of preparation method of sugarcoated haws shape one dimension golden nanometer particle.
Background technology
There is the noble metal nano particles of anisotropy geometry, especially one dimension or two-dimensional gold nano particle, show the optical absorption different from spheroidal particle and body phase material and emission spectrum character, the field such as metal-enhanced fluorescence, SERS, medium sensing, cancer thermotherapy, drugrelease, nanocomposite optical imaging, local Electromagnetic enhancement has great using value.One-dimension nanosized gold materials, such as gold nanorods and nanowires of gold etc., more unusual electrical and optical properties is had compared to spheroidal particle, and synthetic method is fairly simple, gold nanorods self assembly can obtain having one dimension, two dimension, three-dimensional ordered structure, and this makes it in optics, electronic sensor, biological detection, medical imaging and treatment of cancer, have important application potential.
At present, the preparation for one-dimension nanosized gold materials such as gold nanorods has developed many effective methods, mainly comprises soft template method, hard template method and seed mediated growth method.Soft template method is mainly containing in the solution system of gold chloride, the surfactant and the auxiliary agent that add functionalization make template to form bar-shaped or elliptoid micella, the golden nanometer particle of reduction is made to be limited in oriented growth in micella, finally be grown to anisotropic golden nanometer particle, conventional has electrochemical process and photochemical method.Hard template method mainly does template with the porous alumina membrane of electrochemical etching, prepares and has even height and smectic order 2D gold nano stick array.Seed mediated growth method is a kind of method most widely used in current gold nanorods preparation research.Its general principle in reaction solution, adds a certain amount of gold nano grain as seed, and under the protection of surfactant, gold nano grain oriented growth is the gold nanorods of certain draw ratio.But the product that above method obtains mostly is straight gold nanorods.And some other one dimension anisotropy gold nano-material, the gold nano structure of such as sugarcoated haws shape, has not yet to see bibliographical information.
Summary of the invention
The problem to be solved in the present invention is, utilizes biomolecule to reduce HAuCl for reducing agent under providing a kind of temperate condition in liquid crystal reaction system
4solution prepares the short-cut method of sugarcoated haws shape one dimension golden nanometer particle.
The object of the invention is to be achieved through the following technical solutions.
Two reactional equations that the chemical reduction procedure of nano material of the present invention relates to are as follows:
AuCl
4 - + 2e
- AuCl
2 - + 2Cl
-
AuCl
2 - + e
- Au+ 2Cl
-
Total reaction equation is:
AuCl
4 - + 3e
- Au+ 4Cl
-
The preparation method of sugarcoated haws shape one dimension golden nanometer particle of the present invention, is made up of following step:
(1) reaction system is configured: biomolecule A and the concentration of to be the anion surfactant of 40-50 wt % and mass percent by mass percent be 0.5-2.5 wt % are 0.015-0.04mol × L
-1aqueous solution of chloraurate mixes, and obtains uniform lysotropic liquid crystal hexagonal phase;
(2) at room temperature left standstill by above-mentioned lysotropic liquid crystal, the time is 24 ~ 80h;
(3) dilute with water washs above-mentioned sample, and centrifugal (3000rpm).Collect centrifuged pellet product with the copper mesh being covered with Formvor film, then use transmission electron microscope observing, products therefrom presents one dimension sugarcoated haws shape structure, and diameter is 90-120 nm, and length is 500-900nm.
Wherein, the mass percent of the anion surfactant described in step (1) is preferably 43-47 wt%.
Wherein, the mass percent of the anion surfactant described in step (1) most preferably is 45 wt%.
Wherein, the mass percent of the biomolecule A described in step (1) is preferably 0.1-2.5 wt%.
Wherein, the mass percent of the biomolecule A described in step (1) most preferably is 1.5 wt%.
Wherein, the anion surfactant preferably sodium dodecyl sulfate (SDS) described in step (1).
Wherein, the preferred aminobutyric acid of biomolecule A described in step (1).
Wherein, the concentration preferably 0.03 mol × L of the chlorauric acid solution described in step (1)
-1.
Wherein, the time of repose described in step (2) is preferably 24 ~ 80 h.
Wherein, the time of repose described in step (2) most preferably is 72 h.
Wherein, in described step (1), (2), most preferably mass percent is the SDS of 45 wt%, the aminobutyric acid of 1.5 wt% and 0.03 mol × L
-1aqueous solution of chloraurate mixes, and time of repose is 72h.
Adopt method of the present invention to prepare sugarcoated haws shape one dimension golden nanometer particle, the metal nano material diameter obtained is 90-120 nm, and length is 500-900nm, can be applied to the field such as electronic device and catalysis.
The present inventor, through lot of experiments, show that aminobutyric acid can be used as reducing agent reduction HAuCl
4prepare gold nano-material, and the sugarcoated haws shape one-dimensional nano structure with anisotropy pattern can be obtained, respond well.
Beneficial effect of the present invention:
1, gained golden nanometer particle has sugarcoated haws shape one-dimentional structure, and novel structure is unique, has no bibliographical information at present;
2, the biomolecule A used by the present invention is aminobutyric acid.As reducing agent, aminobutyric acid has no report in the application of gold nano-material preparation field; Aminobutyric acid is a kind of common biomolecule, common solution in very easily water-soluble production such as grade; Toxic action is not had to environment and biology, compensate for the deficiency that existing chemical method produces gold nano-material.
3, reaction system is liquid crystal system.The formation of ordered structure to product of liquid crystal system has directional guide effect, and the product structure obtained is distinct and even.
4, by controlling ratio and other reaction condition of reducing agent, particle size and particle morphology can effectively be controlled.
5, easy reaction, mild condition is controlled, does not need other energy ezpenditure, and this is more conducive to cost-saving.
Accompanying drawing explanation
Fig. 1 and Fig. 2 is respectively the gold nano product transmission electron microscope photo of differential responses system in embodiment 2 and embodiment 4.
Detailed description of the invention
Below in conjunction with specific embodiment, the invention will be further described.
embodiment 1
A preparation method for sugarcoated haws shape one dimension golden nanometer particle, step is as follows:
(1) lauryl sodium sulfate (SDS, 45 wt%)-aminobutyric acid (0.5 wt%)-gold chloride (HAuCl is prepared
4, the 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C insulating boxs after mixing, react 72 h;
(2) dilute with water reaction system, centrifugal, remove supernatant, collecting precipitation and products therefrom, present different morphologies by transmission electron microscope observing products therefrom, comprise two-dimensional gold nanometer plate, one dimension sugarcoated haws shape structure and spheroidal particle, wherein one dimension sugarcoated haws shape golden nanometer particle diameter is about 50 nm, length is 100-200 nm, and in all products, proportion is little.
embodiment 2
A preparation method for sugarcoated haws shape one dimension golden nanometer particle, step is as follows:
(1) lauryl sodium sulfate (SDS, 45 wt%)-aminobutyric acid (1.5 wt%)-gold chloride (HAuCl is prepared
4, the 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C insulating boxs after mixing, react 72 h;
(2) dilute with water reaction system, centrifugal, and remove supernatant, collecting precipitation and products therefrom, present one dimension sugarcoated haws shape structure by transmission electron microscope observing products therefrom, diameter is 100-120 nm, and length is 500-900 nm.
embodiment 3
A preparation method for sugarcoated haws shape one dimension golden nanometer particle, step is as follows:
(1) lauryl sodium sulfate (SDS, 45 wt%)-aminobutyric acid (2.5 wt%)-gold chloride (HAuCl is prepared
4, the 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C insulating boxs after mixing, react 72 h;
(2) dilute with water reaction system, centrifugal, removes supernatant, collecting precipitation and products therefrom, present different morphologies by transmission electron microscope observing products therefrom, and primary product is two-dimensional gold nanometer plate, the length of side of dish is 1-1.5 mm, has one dimension sugarcoated haws shape particle little once in a while.
embodiment 4
A preparation method for sugarcoated haws shape one dimension golden nanometer particle, step is as follows:
(1) lauryl sodium sulfate (SDS, 45 wt%)-aminobutyric acid (1.5 wt%)-gold chloride (HAuCl is prepared
4, the 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C insulating boxs after mixing, react 48 h;
(2) dilute with water reaction system, centrifugal, and remove supernatant, collecting precipitation and products therefrom, present one dimension sugarcoated haws shape structure by transmission electron microscope observing products therefrom, diameter is about 90 nm, and length is about 300 nm.
embodiment 5
A preparation method for sugarcoated haws shape one dimension golden nanometer particle, step is as follows:
(1) lauryl sodium sulfate (SDS, 50 wt%)-aminobutyric acid (1.5 wt%)-gold chloride (HAuCl is prepared
4, the 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C insulating boxs after mixing, react 72 h;
(2) dilute with water reaction system, centrifugal, and remove supernatant, collecting precipitation and products therefrom, present one dimension sugarcoated haws shape structure by transmission electron microscope observing products therefrom, similar with product morphology in embodiment 3.
Claims (6)
1. utilize anion surfactant-biomolecule A-gold chloride mixed system to be a reaction system, under room temperature, be obtained by reacting the method for one dimension sugarcoated haws shape golden nanometer particle.
2. method according to claim 1, is characterized in that: preparation anion surfactant-biomolecule A-gold chloride (HAuCl
4, the aqueous solution) and liquid crystal system, put into 25 ° of C insulating boxs with after mixing, react 72 h; (2) dilute with water reaction system, centrifugal, and remove supernatant, collecting precipitation and products therefrom, present one dimension sugarcoated haws shape structure by transmission electron microscope observing products therefrom, and diameter is 90-120 nm, and length is 500-900nm.
3. the method according to claim 1 and 2, is characterized in that: described anion surfactant is lauryl sodium sulfate (SDS), and the concentration (mass percent) in system is 40 %-50 %.
4. the method according to claim 1 and 2, is characterized in that: described biomolecule A is aminobutyric acid, and the concentration (mass percent) in system is 0.5 %-2.5 %.
5. the method according to claim 1 and 2, is characterized in that: described HAuCl
4the concentration of the aqueous solution is 0.03mol × L
-1.
6. the method according to claim 1 and 2, is characterized in that: the reaction time is 24-80 h.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121844A (en) * | 2017-05-23 | 2017-09-01 | 湘潭大学 | The method that the golden nanometer particle modified by liquid crystal polymer regulates and controls liquid crystal aligning |
| CN111804314A (en) * | 2020-06-09 | 2020-10-23 | 浙江工业大学 | Sugarcoated haw-shaped rhodium-tellurium nanochain catalyst for catalyzing methanol oxidation reaction and preparation method thereof |
| CN113560595A (en) * | 2021-08-06 | 2021-10-29 | 山东大学 | Preparation method and application of metal-based DNA thermotropic liquid crystal |
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| CN1924117A (en) * | 2006-08-24 | 2007-03-07 | 山东大学 | Preparation method of two-dimensional plane gold nano single crystal plate |
| US20100280220A1 (en) * | 2009-05-04 | 2010-11-04 | Gwangju Institute Of Science And Technology | Gold binding peptides and shape-and size-tunable synthesis of gold nanostructures |
| CN102847951A (en) * | 2012-07-24 | 2013-01-02 | 浙江理工大学 | Process for preparing gold nano particles through reduction of chloroauric acid by catalase |
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2013
- 2013-07-02 CN CN201310272605.1A patent/CN104275492B/en not_active Expired - Fee Related
Patent Citations (3)
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| CN1924117A (en) * | 2006-08-24 | 2007-03-07 | 山东大学 | Preparation method of two-dimensional plane gold nano single crystal plate |
| US20100280220A1 (en) * | 2009-05-04 | 2010-11-04 | Gwangju Institute Of Science And Technology | Gold binding peptides and shape-and size-tunable synthesis of gold nanostructures |
| CN102847951A (en) * | 2012-07-24 | 2013-01-02 | 浙江理工大学 | Process for preparing gold nano particles through reduction of chloroauric acid by catalase |
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| JIANPING XIE ET AL.: "Synthesis of Single-Crystalline Glod Nanoplates in Aqueous Solutions through Biomineralization by Serum Albumin Protein", 《J.PHYS.CHEM.》, vol. 111, no. 28, 31 December 2007 (2007-12-31), pages 10226 - 10232 * |
| LUYAN WANG ET AL.: "Synthesis of Gold Nano-and Microplates in hexagonal Liquid Crystal", 《J.PHYS.CHEM.》, vol. 109, no. 8, 31 December 2005 (2005-12-31), pages 3189 - 3194 * |
| SOONCHANG HONG ET AL.: "Shape Transformation of Gold Nanoplates and there Surface Plasmon Characterization：Trianguar to Hexagonal Nanoplates", 《CHEM. MATER.》, 29 March 2011 (2011-03-29), pages 2011 - 2013 * |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107121844A (en) * | 2017-05-23 | 2017-09-01 | 湘潭大学 | The method that the golden nanometer particle modified by liquid crystal polymer regulates and controls liquid crystal aligning |
| CN107121844B (en) * | 2017-05-23 | 2019-09-20 | 湘潭大学 | Regulate and control the method for liquid crystal aligning by the gold nanoparticle that liquid crystal polymer is modified |
| CN111804314A (en) * | 2020-06-09 | 2020-10-23 | 浙江工业大学 | Sugarcoated haw-shaped rhodium-tellurium nanochain catalyst for catalyzing methanol oxidation reaction and preparation method thereof |
| CN113560595A (en) * | 2021-08-06 | 2021-10-29 | 山东大学 | Preparation method and application of metal-based DNA thermotropic liquid crystal |
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| CN104275492B (en) | 2016-06-22 |
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