Chemical preparation method of silver dendritic structure period arrangement

A technology of periodic arrangement and periodic structure, applied in the fields of nanostructure manufacturing, nanotechnology, nanotechnology, etc., can solve the problems of agglomeration, difficult application of dendritic and fractal nanostructured materials, etc.

Inactive Publication Date: 2008-07-02
NORTHWESTERN POLYTECHNICAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, so far, the preparation of metal dendritic fractal nanostructures is mostly carried out in a solution system, and the prepared dendritic fractal structures are mostly in a disordered state, and are prone to agglomeration, thus giving this dendritic fractal nanostructure The application of structural materials poses difficulties

Method used

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  • Chemical preparation method of silver dendritic structure period arrangement
  • Chemical preparation method of silver dendritic structure period arrangement
  • Chemical preparation method of silver dendritic structure period arrangement

Examples

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preparation example Construction

[0011] 1. Preparation of polystyrene microspheres: Using emulsion polymerization, add styrene monomer and emulsifier sodium dodecyl sulfate (SDS) into ultrapure water, and mix well by ultrasonic and electromagnetic stirring to form O / W emulsion; above-mentioned emulsion is added in the three-necked bottle that is connected with stirrer, condensing pipe and nitrogen gas introduction interface, stirs under the water bath condition of 60~80 ℃, and add initiator potassium persulfate dropwise after logical nitrogen 15~40 minutes ( KPS) aqueous solution, after 10~24 hours of constant temperature reaction under the condition of logical nitrogen, cool down naturally. Polystyrene microspheres with a particle diameter of 500 nm to 2.5 μm are obtained.

[0012] 2. Vertical pulling method to prepare polystyrene single-layer colloidal crystal film: first, the conductive glass coated with indium tin oxide is cut into long 3cm, wide 1cm sheet (thickness 1mm), then in dilute ammonia water: H...

Embodiment 1

[0016] Embodiment one: in the process of preparing polystyrene microspheres, adopt emulsion polymerization method, 3.25g styrene monomer and 0.02g emulsifier sodium dodecyl sulfate (SDS) are added into 32.3g ultrapure water, Thoroughly mix uniformly by ultrasonic and electromagnetic stirring to form O / W emulsion; put the above emulsion into a three-necked bottle connected with a stirrer, a condenser tube and a nitrogen inlet port, stir in a water bath at 68°C, and pass nitrogen gas for 30 minutes, then gradually Add dropwise an aqueous solution of initiator potassium persulfate (KPS) (0.0325gKPS / 5gH 2 (0), then naturally cool down after 12 hours of constant temperature reaction under the condition of nitrogen gas. Obtain the polystyrene microsphere white emulsion of average particle diameter 950nm as attached figure 2 shown.

Embodiment 2

[0017] Example 2: In the process of polystyrene two-dimensional single-layer colloidal crystal template, the polystyrene white emulsion prepared above was repeatedly centrifuged and washed several times by vertical pulling method, and then prepared into a solution with a mass percentage of about 1.0% , and poured into a square glass vessel with a side length of 3.0cm. The conductive glass coated with indium tin oxide was sequentially mixed in 25% dilute ammonia water: 30% H 2 o 2 :H 2 O=1:2:5 mixed solution, acetone, ethanol and a large amount of ultrapure water were sonicated for 15 minutes, and then dried with nitrogen. Insert the cleaned conductive glass vertically into the glass vessel containing the polystyrene emulsion and put it in a drying oven at 50°C, place it in a closed environment for 72 hours and then take it out. The conductive glass assembled with polystyrene microspheres was placed in a vacuum oven with a vacuum degree of 0.08 MPa and cured at 65°C for 2 ho...

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Abstract

The invention relates to a chemical preparing method for a silver tree dendritic morphology periodic array, concretely relating to a preparing method for a chemical electrodeposit silver tree dendritic morphology array which takes a polystyrene microballoon colloid crystal as a primary templet and takes a periodic array zinc oxide inverse opal structure as a secondary templet. The polystyrene microballoon used by the invention is prepared by the method of emulsion polymerization, which adopts a vertical pulling method to acquire a polystyrene two-dimension colloid crystal templet from the surface of a conductive glass and adopts a chemical electrodeposit method to acquire the secondary templet of periodic array zinc oxide inverse opal structure by depositing the zinc oxide in the interspace of the polystyrene colloid crystal microballoon; and then the chemical electrodeposit method is adopted to deposit a silver tree dendritic morphology unit in a cavity of the zinc oxide inverse opal structure to acquire the silver tree dendritic morphology array.

Description

technical field [0001] The invention relates to a chemical preparation method for periodic arrangement of silver dendrites, in particular to a method for chemically electrodepositing silver dendrites using a single-layer polystyrene colloidal crystal as a primary template, and periodically arranging zinc oxide inverse opal structures as a secondary template. Fabrication method of structured arrays. Background technique [0002] Metal nanostructures, especially periodically ordered metal nanostructures, have received extensive attention in the field of nanostructured materials preparation in recent years due to their potential applications in optics, optoelectronics, biotechnology, and high-performance nanostructure device design. The first condition for the preparation of periodic ordered metal nanostructures is the preparation of periodic ordered nanostructure templates. At present, there are two methods for the preparation of ordered nanostructure templates: one is self-a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B82B3/00C08F112/08C08F2/24C08J9/26
Inventor 赵晓鹏刘辉杨阳
Owner NORTHWESTERN POLYTECHNICAL UNIV
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