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Preparation method of flower-shaped nano-silver powder self-assembly structure

A nano-silver powder and self-assembly technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve problems such as complex preparation process and difficulty in two-dimensional silver nano-ultrafine structure, and achieve low cost , The preparation method is simple and feasible, and the effect of good controllability

Inactive Publication Date: 2019-02-26
WUYI UNIV +1
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Problems solved by technology

There are many kinds of above-mentioned methods, all of which have prepared very good two-dimensional silver nano-ultrafine structures, but the preparation process is generally more complicated, so there is still a certain possibility of preparing novel and controllable two-dimensional silver nano-ultra-fine structures under relatively simple process conditions. difficulty

Method used

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  • Preparation method of flower-shaped nano-silver powder self-assembly structure
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  • Preparation method of flower-shaped nano-silver powder self-assembly structure

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Embodiment 1

[0025] The preparation method of a kind of flower-like nano-silver powder self-assembly structure described in the present embodiment 1 comprises the following steps:

[0026] (1) 75ml of 0.013mmol polyvinylpyrrolidone was fully dissolved in 75mL of distilled water to obtain a polyvinylpyrrolidone solution with a concentration of 0.171mM;

[0027] (2) Add 0.745mmol AgNO to the polyvinylpyrrolidone solution 3 And stir for one minute to a uniform solution, then add 0.745mmol ascorbic acid into the mixed solution and stir evenly;

[0028] (3) Transfer the obtained reaction solution to a polytetrafluoroethylene-lined hydrothermal reaction kettle, perform a hydrothermal reaction at 150° C. for 10 h, and cool naturally to room temperature;

[0029] (4) Gained product is fully washed with ethanol, obtain nano-silver sol solution after centrifugation, nano-silver sol solution is evenly coated on the clean glass substrate surface, at room temperature natural drying, obtains flower sha...

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Abstract

The invention discloses a preparation method of a flower-shaped nano-silver powder self-assembly structure. The preparation method of the flower-shaped nano-silver powder self-assembly structure adopts a hydrothermal method, in the presence of a surfactant PVP, AgNO3 is reduced by using ascorbic acid (AsA), the novel two-dimensional flower-shaped nano-silver self-assembly structure which is assembled from silver nanorod bundles and high in yield is synthesized. Under simple technical conditions, controllable preparation of the two-dimensional flower-shaped nano-silver ultra-fine structure is achieved. The preparation method is simple and feasible, has no pollution to the environment and is low in cost and good in controllability, the final appearance of a product can be controlled, the multi-morphology two-dimensional flower-shaped nano-silver ultra-fine structure can be obtained, and the special morphology structure can have important application in the aspects of future nano devicesand biosensors.

Description

technical field [0001] The invention relates to the technical field of nano-silver preparation technology, in particular to a method for preparing a flower-shaped nano-silver powder self-assembly structure. Background technique [0002] Two-dimensional metallic Ag nanoparticles are nanostructures with two-dimensional anisotropy, including nanotriangular prisms, nanosheets, nanodisks and other structures. Two-dimensional silver nanomaterials have attracted extensive attention due to their potential applications in special optical and biological sensors. The shape and size of nano-silver determine its special properties, so some new properties can be obtained by synthesizing silver nanostructures with novel shapes. Due to the huge application prospects of nanoelectronic devices, the two-dimensional silver nano-ultrafine structure has great potential for the continuous miniaturization of future microelectronic devices, and thus has become a research hotspot for scientists from...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F1/00B22F9/24B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/24B22F1/0553B22F1/07B22F1/054
Inventor 尹荔松刘艳娥阳素玉蓝键马思琪范海陆涂驰周
Owner WUYI UNIV
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