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Method for preparing porous zinc oxide particle studded composite film

A technology of zinc oxide particles and composite films, which is applied in solid-state chemical plating, metal material coating technology, coating, etc., can solve the problems of small pores, catalytic efficiency, and gas-sensing performance adsorption, and achieve good adhesion Effect

Inactive Publication Date: 2010-06-16
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although binary composite metal oxide films with uniform particle size distribution and uniform dispersion of components can be prepared by using binary LDHs as precursors, the above binary composite films are dense and have small pores between particles. In practical applications, catalytic efficiency, gas Sensitivity, adsorption, etc. will be affected

Method used

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  • Method for preparing porous zinc oxide particle studded composite film
  • Method for preparing porous zinc oxide particle studded composite film
  • Method for preparing porous zinc oxide particle studded composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Prepare 0.05mol / L Co(NO 3 ) 2 ·6H 2 O, 0.25mol / L Zn(NO 3 ) 2 ·6H 2 O and 0.1mol / L Al(NO 3 ) 3 9H 2 O mixed salt solution 100ml, the sodium hydroxide of 1.7mol / L and the sodium carbonate mixed alkaline solution 80ml of 0.54mol / L are prepared with deionized water. Then, the mixed salt solution and the mixed lye solution were added dropwise and rapidly into the fully back-mixed rotating liquid film reactor for reaction, and crystallized in a water bath at 90° C. for 6 hours. The reaction solution was centrifuged at 3500r / min, and then washed three times with deionized water, and then 3g of the precipitate obtained by centrifugation was dispersed in 50ml of deionized water, and the stable CoZnAlCO was prepared by ultrasonication for 1h. 3 LDHs suspension. CoZnAlCO prepared on alumina substrate by coating technology 3 LDHs coating was dried at room temperature for 72 hours. In order to carry out quality control to slurry preparation process, after taking out a sma...

Embodiment 2

[0035] Prepare 0.006mol / L Co(NO 3 ) 2 ·6H 2 O, 0.3mol / L Zn(NO 3 ) 2 ·6H 2 O and 0.1mol / L Al(NO 3 ) 3 9H 2 O mixed salt solution 100ml, the sodium hydroxide of 1.7mol / L and the sodium carbonate mixed alkaline solution 80ml of 0.54mol / L are prepared with deionized water. Using the same conditions as in Example 1, the micron-scale, uniform and porous ZnO-Co 3 o 4 / ZnAl 2 o 4 Composite particle films such as Figure 11 shown.

Embodiment 3

[0037] Prepare 0.05mol / L Ni(NO 3 ) 2 ·6H 2 O, 0.25mol / L Zn(NO 3 ) 2 ·6H 2 O and 0.1mol / L Al(NO 3 ) 3 9H 2 O mixed salt solution 100ml, the sodium hydroxide of 1.7mol / L and the sodium carbonate mixed alkaline solution 80ml of 0.54mol / L are prepared with deionized water. Then, the mixed salt solution and the mixed lye solution were added dropwise and rapidly into the fully back-mixed rotating liquid film reactor for reaction, and crystallized in a water bath at 90° C. for 6 hours. Centrifuge, then wash three times with deionized water, then take 3g of the precipitate obtained by centrifugation and disperse it in 50ml deionized water, and ultrasonicate for 1h to prepare a stable NiZnAlCO 3 LDHs suspension. NiZnAlCO prepared on alumina substrate by coating technology 3 LDHs coating was dried at room temperature for 72 hours.

[0038] Roasting under the same conditions as in Example 1 can also prepare micron-scale, uniform, porous ZnO-NiO / ZnAl 2 o 4 film. From the X-r...

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Abstract

The invention relates to a method for preparing porous zinc oxide partial mosaic composite film, belonging to the field of composite metal oxide film technology. M<II>ZnAlCO<3>LDHs anion lamellar compound serum is prepared by nucleation / crystallization isolation method, the general formula of M<II>ZnAlCO<3>LDHs is MxZn6-xAl2(OH)16CO3.4H2O; then M<II>ZnAlCO3LDHs coating precursor is prepared on a substrate by serum coating technology, ZnO-TMOs / ZnAL3O4 zinc oxide composite film is got by pyrolysis, the general formula of xZnO-yMOa / ZnAL3O4 is ZnO-TMOs / ZnAL3O4. The invention has the advantages that: by controlling the kinds and relative proportions thereof of divalent metal cations, series zinc oxide partial mosaic composite film, which has uniformly disperse partials, micrometer thickness andgood adhesive attraction and is loose and porous, is got, laying a foundation for applying zinc oxide micrometer / nanometer composite film material to catalysis, adsorption and gas sensor.

Description

technical field [0001] The invention belongs to the technical field of composite metal oxide films, and in particular provides a method for preparing porous zinc oxide particle-embedded composite films. Background technique [0002] Zinc oxide (ZnO) as a direct wide bandgap semiconductor is widely used in piezoelectric, photoelectric, catalysis, sensors and other fields. Recent studies have shown that zinc oxide composite materials have higher activity than single wide-bandgap semiconductors in terms of light absorption, photocatalysis, and photoelectric conversion, which has attracted extensive attention from scientific researchers. So far, a variety of thin film preparation techniques, such as DC magnetron sputtering, sol-gel-spin coating, sol-gel-vacuum evaporation, and pulsed laser ablation, have been applied to the preparation of ZnO binary composite thin films. . For example: In Sensors and Actuators B, 1999, 55: 47-54, Hong Y. Bae et al reported the preparation of Z...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23C20/08
Inventor 杨兰王彩霞周伟段雪
Owner BEIJING UNIV OF CHEM TECH