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Preparation method of fractal structure ZnO film

A fractal structure and thin film technology, applied in the direction of zinc oxide/zinc hydroxide, etc., can solve the problem that the basic zinc salt has no shape, etc.

Active Publication Date: 2021-03-12
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Basic zinc salts can be obtained by reacting soluble zinc salts with bases, but in general, the synthesized layered basic zinc salts have no fixed shape

Method used

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  • Preparation method of fractal structure ZnO film
  • Preparation method of fractal structure ZnO film
  • Preparation method of fractal structure ZnO film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) While stirring, slowly drop 0.25M, 20mL zinc acetate solution into 0.75M, 10mL triethylamine solution, stir magnetically for 30min, wash the basic zinc acetate obtained by the reaction with deionized water And dispersed to a volume of 30mL to obtain a white suspension of basic zinc acetate;

[0026] (2) Use a pipette gun to pipette 0.05mL of the suspension, use the scraping method to coat the film on the glass substrate, and then dry it at 60°C for 30min to obtain the basic zinc acetate film, and then apply the basic zinc acetate film on the Calcined at 400°C for 1 hour to convert into nano-ZnO base film;

[0027] (3) Place the nano-ZnO base film prepared in step (2) in 0.05M, 30mL zinc sulfate solution and immerse for 5h, take out the sample and wash it with distilled water, and dry it at 80°C for 15min to obtain a basic zinc sulfate film;

[0028] (4) heat-treating the basic zinc sulfate film obtained in step (3) at 400° C. for 1 h;

[0029] (5) Rinse with a pot...

Embodiment 2

[0032] (1) While stirring, slowly drop 0.25M, 20mL zinc acetate solution into 0.75M, 10mL triethylamine solution, stir magnetically for 30min, wash the basic zinc acetate obtained by the reaction with deionized water And dispersed to a volume of 30mL to obtain a white suspension of basic zinc acetate;

[0033] (2) Use a pipette gun to pipette 0.05mL of the suspension, use the scraping method to coat the film on the glass substrate, and then dry it at 60°C for 30min to obtain the basic zinc acetate film, and then apply the basic zinc acetate film on the Calcined at 400°C for 1 hour to convert into nano-ZnO base film;

[0034] (3) Place the nano-ZnO base film prepared in step (2) in 0.28M, 30mL zinc sulfate solution and immerse for 1h, take out the sample and wash it with distilled water, and dry it at 80°C for 15min to obtain a basic zinc sulfate film;

[0035] (4) heat-treating the basic zinc sulfate film obtained in step (3) at 500° C. for 1 h;

[0036] (5) Rinse with a sod...

Embodiment 3

[0044] (1) While stirring, slowly drop 0.25M, 20mL zinc acetate solution into 0.75M, 10mL triethylamine solution, stir magnetically for 30min, and wash the basic zinc acetate obtained by the reaction with deionized water And dispersed to a volume of 30mL to obtain a white suspension of basic zinc acetate;

[0045] (2) Use a pipette gun to pipette 0.05mL of the suspension, use the scraping method to coat the film on the glass substrate, and then dry it at 60°C for 30min to obtain the basic zinc acetate film, and then apply the basic zinc acetate film on the Calcined at 400°C for 1 hour to convert into nano-ZnO base film;

[0046] (3) Place the nano-ZnO base film prepared in step (2) in 0.5M, 30mL zinc sulfate solution and immerse it for 0.5h, take out the sample and rinse it with distilled water, and dry it at 80°C for 15min to obtain a basic zinc sulfate film ;

[0047] (4) heat-treating the basic zinc sulfate film obtained in step (3) at 700° C. for 1 h;

[0048] (5) Rinse w...

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Abstract

The invention provides a preparation method of a ZnO film with a fractal structure, which belongs to the technical field of inorganic functional material preparation and converts a flat nanocrystalline ZnO substrate into a ZnO film with a dendritic fractal structure through a series of treatment. The preparation method comprises the following steps: synthesizing a flat nanocrystalline ZnO substrate by taking basic zinc acetate as a precursor and adopting a frictioning method and calcination treatment at the temperature of 400 DEG C to 500 DEG C for 1 hour; dipping the nanocrystalline ZnO substrate in a zinc sulfate solution to convert the nanocrystalline ZnO substrate into basic zinc sulfate; subjecting the basic zinc sulfate film to heat treatment, then washing the film with a sodium hydroxide solution, drying the film for 1 h at the temperature of 100 DEG C and finally calcining the film at the high temperature to obtain the ZnO film of the dendritic fractal structure. According to the invention, the fractal structure of ZnO plays an important role in increasing the water contact angle of the surface of the film.

Description

technical field [0001] The invention relates to a preparation method of a ZnO film with a fractal structure, and belongs to the technical field of preparation of inorganic functional materials. Background technique [0002] Fractal refers to the shape in which part is similar to the whole in some way. Fractal exists widely in nature, such as continuous mountains and rivers, corals and tree crowns. Fractal structure is a kind of extremely fragmented and complex, but self-similar and self-radiative system, which is widely used in various disciplines such as physics, chemistry, and biology. Fractal structure can provide large surface area, porosity. For photocatalysts, a large surface area can increase the concentration of photocatalyst active sites; a high porosity is conducive to increasing the utilization efficiency of incident light, and also provides a smooth mass transfer channel for reactants and products. On the other hand, for surface functional materials, fractal st...

Claims

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Application Information

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IPC IPC(8): C01G9/02
CPCC01G9/02C01P2002/72C01P2004/03
Inventor 董如林亓智信朱雪珂
Owner CHANGZHOU UNIV