Method for preparing porous array ZnO thin film in graded structure by electro-deposition method

A technology of hierarchical structure and electrodeposition method, applied in the direction of electrolytic inorganic material coating, etc., can solve the problem of high requirements for operators' basic skills and achieve the effect of reducing the technical difficulty of operation

Inactive Publication Date: 2013-04-24
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] For the preparation of ZnO array films, aluminum oxide (AAO) templates are usually used to prepare, but this method needs to prepare high-quality porous array alumina templates in advance, and also requires a good template transfer technology, and the preparation process has a great impact on the operator. Basic skills required

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  • Method for preparing porous array ZnO thin film in graded structure by electro-deposition method
  • Method for preparing porous array ZnO thin film in graded structure by electro-deposition method
  • Method for preparing porous array ZnO thin film in graded structure by electro-deposition method

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Embodiment 1

[0044] The method for preparing hierarchical structure porous array ZnO film by electrodeposition method comprises the following steps:

[0045]1) Assemble PS templates with different layers and particle sizes on the FTO conductive glass, the specific method is:

[0046] a. After cleaning the glass slide, vertically immerse it in a PS aqueous solution with a PS particle size of 2.5 μm (the PS mass concentration of the PS aqueous solution is 5%) and let it stand for 2 to 3 minutes, then pull it out vertically at a pulling speed of 4cm / min , dried at room temperature to obtain a single-layer array template, and then slowly insert the single-layer array template into water at an inclination angle of 45°, the PS beads are automatically peeled off and rearranged in a single layer on the water surface, and a single-layer array template floating on the water surface is obtained. layer PS template;

[0047] b. Use tweezers to take another FTO conductive glass (the size of FTO conduct...

Embodiment 2

[0055] The method for preparing hierarchical structure porous array ZnO film by electrodeposition method comprises the following steps:

[0056] 1) Assemble PS templates with different layers and particle sizes on the FTO conductive glass, the specific method is:

[0057] a. After cleaning the glass slide, vertically immerse it in a PS aqueous solution with a PS particle size of 2.5 μm and let it stand for 2 to 3 minutes, then pull it out vertically at a pulling speed of 4 cm / min, and dry it at room temperature to obtain a single-layer array template. Then the single-layer array template is slowly inserted into the water at an inclination angle of 45°, the PS balls are automatically peeled off and rearranged in a single layer on the water surface, and a single-layer PS template floating on the water surface is obtained;

[0058] b. Use tweezers to take another FTO conductive glass (the size of FTO conductive glass is 2x1 cm 2 ) as a carrier, after cleaning, insert the car...

Embodiment 3

[0066] The method for preparing hierarchical structure porous array ZnO film by electrodeposition method comprises the following steps:

[0067] 1) Assemble PS templates with different layers and particle sizes on the FTO conductive glass, the specific method is:

[0068] a. After cleaning the glass slide, vertically immerse it in a PS aqueous solution with a PS particle size of 2.5 μm and let it stand for 2 to 3 minutes, then pull it out vertically at a pulling speed of 4 cm / min, and dry it at room temperature to obtain a single-layer array template. Then the single-layer array template is slowly inserted into the water at an inclination angle of 45°, the PS balls are automatically peeled off and rearranged in a single layer on the water surface, and a single-layer PS template floating on the water surface is obtained;

[0069] b. Use tweezers to take another FTO conductive glass (the size of FTO conductive glass is 2x1 cm 2 ) as a carrier, after cleaning, insert the car...

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Abstract

The invention relates to a method for preparing a porous array ZnO thin film in a graded structure by an electro-deposition method. The method comprises the following steps of: 1) respectively assembling PS (Poly Styrene) moulds with different numbers of layers and grains on FTO (Fluorinedoped Tin Oxide) conducting glass, and placing the moulds dried at room temperature into a vacuum drying box to dry; 2) using the moulds prepared by the step 1) as a working electrode, a platinum sheet as a counter electrode, a saturated calomel electrode as a reference electrode and zinc salt aqueous liquor as a deposition liquid, depositing for 10-30minutes at -1.3V; 3) washing the electro-deposited moulds by secondary deionized water, and placing the moulds dried at room temperature into the vacuum drying box to dry; and 4) soaking the moulds in a toluene liquid to dissolve and remove the PS moulds and taking out the ZnO thin film. According to the invention, the ZnO porous array thin film in the graded structure with controllable numbers of layers and aperture can be prepared, so that the operating technical difficulty is reduced. The ZnO porous array thin film in the graded structure with controllable numbers of layers and aperture is prepared by the electro-deposition method.

Description

technical field [0001] The invention relates to the field of preparation of nanometer materials, in particular to a method for preparing ZnO thin films with hierarchical structure porous arrays by electrodeposition. Background technique [0002] Zinc oxide (ZnO) with a hexagonal wurtzite structure is a wide-bandgap semiconductor, which has broad application prospects in luminescence, sensors, superhydrophobic materials, dye-sensitized solar cells, and photocatalytic degradation of organic wastewater. As one of the commonly used functional materials, ZnO has the advantages of non-toxicity, high catalytic activity, and strong oxidation ability. The performance of ZnO thin film material is slightly inferior to that of powder material, but it is convenient for thin film material to have the advantages of easy separation and recyclability. [0003] At present, the methods for preparing ZnO thin films mainly include magnetron sputtering, chemical vapor deposition, hydrothermal sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D9/04
Inventor 雷建飞李立本倪静杜凯魏荣慧毛爱霞
Owner HENAN UNIV OF SCI & TECH
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