CN104275492B - A kind of preparation method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape - Google Patents
A kind of preparation method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape Download PDFInfo
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- CN104275492B CN104275492B CN201310272605.1A CN201310272605A CN104275492B CN 104275492 B CN104275492 B CN 104275492B CN 201310272605 A CN201310272605 A CN 201310272605A CN 104275492 B CN104275492 B CN 104275492B
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Abstract
The preparation method that the invention discloses a kind of one-dimensional golden nanometer particle of sugarcoated haws on a stick shape, its method is: with anion surfactant-biomolecule A-gold chloride (HAuCl4) mixed system is reaction system, is obtained by reacting one-dimensional sugarcoated haws on a stick shape golden nanometer particle under room temperature。It is simple that the method for the present invention has reaction system, mild condition；Reducing agent is biomolecule, has environmental friendliness characteristic；Product morphology and size tunable, the feature such as yield is big and structure is distinct。
Description
Technical field
The preparation method that the present invention relates to a kind of one-dimensional golden nanometer particle, the preparation method particularly relating to a kind of one-dimensional golden nanometer particle of sugarcoated haws on a stick shape。
Background technology
There is the noble metal nano particles of anisotropy geometry, especially one-dimensional or two-dimensional gold nanoparticle, showing the optical absorption different from spheroidal particle and body phase material and emission spectrum character, the field such as metal-enhanced fluorescence, surface enhanced raman spectroscopy, 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-dimensional, two-dimentional, three-dimensional ordered structure, and this makes it have important application potential in optics, electronic sensor, biological detection, medical imaging and treatment of cancer。
Preparation currently for one-dimension nanosized gold materials such as gold nanorods has developed many effective methods, mainly includes soft template method, hard template method and seed mediated growth method。Soft template method is mainly in the solution system containing gold chloride, the surfactant and the auxiliary agent that add functionalization make template to form bar-shaped or elliptoid micelle, the golden nanometer particle making reduction is limited in micelle oriented growth, finally being 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 ultimate principle is to add a certain amount of gold nano grain in reaction solution 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-dimensional anisotropy gold nano-material, for instance the gold nano structure of sugarcoated haws on a stick shape, have not yet to see bibliographical information。
Summary of the invention
The problem to be solved in the present invention is to provide under a kind of temperate condition to utilize in liquid crystal reaction system biomolecule and reduces HAuCl for reducing agent4Solution prepares the short-cut method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape。
It is an object of the invention 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:
AuCl4 -+2e- AuCl2 -+2Cl-
AuCl2 -+e- Au+2Cl-
Total reaction equation is:
AuCl4 -+3e- Au+4Cl-
The preparation method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape of the present invention, is made up of following step:
(1) configuration reaction system: be 0.015-0.04mol × L with concentration by anion surfactant that mass percent is 40-50wt% and biomolecule A that mass percent is 0.5-2.5wt%-1Aqueous solution of chloraurate mixes, and obtains uniform lysotropic liquid crystal hexagonal phase；
(2) at room temperature being stood by above-mentioned lysotropic liquid crystal, the time is 24～80h；
(3) dilute with water washs above-mentioned sample, and is centrifuged (3000rpm)。Collecting centrifuged pellet product with the copper mesh being covered with Formvor film, then with transmission electron microscope observing, products therefrom presents one-dimensional sugarcoated haws on a stick shape structure, and diameter is 90-120nm, and length is 500-900nm。
Wherein, the mass percent of the anion surfactant described in step (1) is preferably 43-47wt%。
Wherein, the mass percent of the anion surfactant described in step (1) most preferably is 45wt%。
Wherein, the mass percent of the biomolecule A described in step (1) is preferably 0.1-2.5wt%。
Wherein, the mass percent of the biomolecule A described in step (1) most preferably is 1.5wt%。
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 preferred 0.03mol × L of concentration of the chlorauric acid solution described in step (1)-1。
Wherein, the time of repose described in step (2) is preferably 24～80h。
Wherein, the time of repose described in step (2) most preferably is 72h。
Wherein, described step (1), most preferably mass percent is aminobutyric acid and the 0.03mol × L of SDS, 1.5wt% of 45wt% in (2)-1Aqueous solution of chloraurate mixes, and time of repose is 72h。
The method adopting the present invention prepares the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape, and the metal nano material diameter obtained is 90-120nm, and length is 500-900nm, can apply to the field such as electronic device and catalysis。
The present inventor, through lot of experiments, show that aminobutyric acid can reduce HAuCl as reducing agent4Prepare gold nano-material, and the sugarcoated haws on a stick shape one-dimensional nano structure with anisotropy pattern can be obtained, respond well。
Beneficial effects of the present invention:
1, gained golden nanometer particle has sugarcoated haws on a stick shape one-dimentional structure, and novel structure is unique, has no bibliographical information at present；
2, the biomolecule A used in 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, is highly soluble in common solution during water etc. produces；Environment and biology are not had toxic action, compensate for existing chemical method and produce the deficiency of gold nano-material。
3, reaction system is liquid crystal system。The formation of product is had directional guide effect by the ordered structure of liquid crystal system, and the product structure obtained is distinct and uniform。
4, by controlling ratio and other reaction condition of reducing agent, it is possible to efficiently control size and particle morphology。
5, easy reaction, mild condition is controlled, it is not necessary to other energy expenditure, and this is more beneficial for saving cost。
Accompanying drawing explanation
The gold nano product transmission electron microscope photo of differential responses system in Fig. 1 and Fig. 2 respectively 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 kind of preparation method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape, step is as follows:
(1) preparation sodium lauryl sulphate (SDS, 45wt%)-aminobutyric acid (0.5wt%)-gold chloride (HAuCl4, 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C calorstats after mixing, react 72h；
(2) dilute with water reaction system, centrifugal, remove supernatant, collect precipitation and products therefrom, presenting different morphologies by transmission electron microscope observing products therefrom, including two-dimensional gold nanometer plate, one-dimensional sugarcoated haws on a stick shape structure and spheroidal particle, wherein one-dimensional sugarcoated haws on a stick shape golden nanometer particle diameter is about 50nm, length is 100-200nm, and in all products, proportion is little。
Embodiment 2
A kind of preparation method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape, step is as follows:
(1) preparation sodium lauryl sulphate (SDS, 45wt%)-aminobutyric acid (1.5wt%)-gold chloride (HAuCl4, 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C calorstats after mixing, react 72h；
(2) dilute with water reaction system, centrifugal, to remove supernatant, collect precipitation and products therefrom, present one-dimensional sugarcoated haws on a stick shape structure by transmission electron microscope observing products therefrom, diameter is 100-120nm, and length is 500-900nm。
Embodiment 3
A kind of preparation method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape, step is as follows:
(1) preparation sodium lauryl sulphate (SDS, 45wt%)-aminobutyric acid (2.5wt%)-gold chloride (HAuCl4, 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C calorstats after mixing, react 72h；
(2) dilute with water reaction system, centrifugal, remove supernatant, collecting precipitation and products therefrom, present different morphologies by transmission electron microscope observing products therefrom, primary product is two-dimensional gold nanometer plate, the length of side of dish is 1-1.5mm, has one-dimensional sugarcoated haws on a stick shape particle little once in a while。
Embodiment 4
A kind of preparation method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape, step is as follows:
(1) preparation sodium lauryl sulphate (SDS, 45wt%)-aminobutyric acid (1.5wt%)-gold chloride (HAuCl4, 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C calorstats after mixing, react 48h；
(2) dilute with water reaction system, centrifugal, to remove supernatant, collect precipitation and products therefrom, present one-dimensional sugarcoated haws on a stick shape structure by transmission electron microscope observing products therefrom, diameter is about 90nm, and length is about 300nm。
Embodiment 5
A kind of preparation method of the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape, step is as follows:
(1) preparation sodium lauryl sulphate (SDS, 50wt%)-aminobutyric acid (1.5wt%)-gold chloride (HAuCl4, 0.03M aqueous solution) and liquid crystal system, put into 25 ° of C calorstats after mixing, react 72h；
(2) dilute with water reaction system, centrifugal, remove supernatant, collect precipitation and products therefrom, present one-dimensional sugarcoated haws on a stick shape structure by transmission electron microscope observing products therefrom, similar with product morphology in embodiment 3。
Claims (1)
1. a preparation method for the one-dimensional golden nanometer particle of sugarcoated haws on a stick shape, is characterized in that: utilizing anion surfactant-biomolecule A-gold chloride mixed system is reaction system, reacts under room temperature；
Concretely comprise the following steps: (1) preparation anion surfactant-biomolecule A-gold chloride liquid crystal system, be 0.015-0.04mol × L by anion surfactant that mass percent is 40-50% and biomolecule A that mass percent is 0.5-2.5% with concentration-1Aqueous solution of chloraurate mixes, and obtains uniform lysotropic liquid crystal hexagonal phase；(2) at room temperature being stood by above-mentioned lysotropic liquid crystal, the time is 24-48h；(3) dilute with water reaction system, centrifugal, to remove supernatant, collect precipitation and products therefrom, present one-dimensional sugarcoated haws on a stick shape structure by transmission electron microscope observing products therefrom, diameter is 90-120nm, and length is 500-900nm；
Described anion surfactant is sodium lauryl sulphate；
Described biomolecule A is aminobutyric acid。
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| 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 |
| CN111804314B (en) * | 2020-06-09 | 2022-03-01 | 浙江工业大学 | Sugarcoated haw-shaped rhodium-tellurium nanochain catalyst for catalyzing methanol oxidation reaction and preparation method thereof |
| CN113560595B (en) * | 2021-08-06 | 2022-07-01 | 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 |
| 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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| US8088740B2 (en) * | 2009-05-04 | 2012-01-03 | Gwangju Institute Of Science And Technology | Gold binding peptides and shape-and size-tunable synthesis of gold nanostructures |
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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 |
| 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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| Title |
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| Aspartic Acid Synthesis of Crytalline Gold Nanoplates, Nanoribbons, and Nanowires in Aqueous Solutions;Yen Nee Tan et al.;《J.phys.Chem.》;20080318;第112卷(第14期);5463－5470 * |
| Cds Nanorod-Based Structure:From Two-and Three-Dimensional Leaves to Flowers;Feng Gao et al.;《J.Phys.Chem.》;20081208;第112卷(第35期);13359-13365 * |
| Shape Transformation of Gold Nanoplates and there Surface Plasmon Characterization：Trianguar to Hexagonal Nanoplates;Soonchang Hong et al.;《Chem. Mater.》;20110329;2011-2013 * |
| Synthesis of Gold Nano-and Microplates in hexagonal Liquid Crystal;Luyan Wang et al.;《J.Phys.Chem.》;20051231;第109卷(第8期);3189-3194 * |
| Synthesis of gold nanoplates by aspartate reduction of gold chloride;Yong Shao et al.;《Chem.Commun.》;20041231;1104-1105 * |
| Synthesis of Single-Crystalline Glod Nanoplates in Aqueous Solutions through Biomineralization by Serum Albumin Protein;Jianping Xie et al.;《J.Phys.Chem.》;20071231;第111卷(第28期);10226-10232 * |
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