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Method for preparing nano zirconia-alumina composite oxide film containing silver particles

A technology of oxide thin film and silver particles, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve complex operation, high cost, unsuitable for thin film sputtering, etc. problem, achieve the effect of low cost, simple method and good thermal stability

Inactive Publication Date: 2011-05-11
BIOCHEM ENG COLLEGE OF BEIJING UNION UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can sputter any substance, but due to the need for vacuum and the limitation of the space of the sputtering chamber, the operation is more complicated, the cost is high, and it is not suitable for large-area thin film sputtering

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] (1) Slowly add polyvinyl alcohol powder with an average molecular weight of 80,000 and a degree of alcoholysis of 70% to distilled water at about 20°C under constant stirring. The mass ratio of polyvinyl alcohol to water is 1:30. After fully swelling, use Heat the solution to about 90°C in a water bath, add 0.2% (based on polyvinyl alcohol) silicone emulsion, and continue stirring until the solution no longer contains tiny particles.

[0014] (2) Add silver nitrate solution dropwise to the polyvinyl alcohol solution obtained in step (1), wherein the molar ratio of silver nitrate to polyvinyl alcohol is 1 / 700, and stir and mix evenly.

[0015] (3) Under continuous stirring, add ultrasonically dispersed zirconium dioxide and aluminum oxide powders with a particle size of 25 to 45 nanometers into the above mixture, and the atomic ratio of Zr, Al and Ag is 100:30: 5. Continue stirring for 2 hours to form a uniform colloidal solution.

[0016] (4) Immerse the cleaned base m...

Embodiment 2

[0018] (1) Slowly add polyvinyl alcohol powder with an average molecular weight of 85,000 and an alcoholysis degree of 75% into distilled water at about 20°C under constant stirring. The mass ratio of polyvinyl alcohol to water is 1:40, and use after fully swelling Heat the solution to about 90°C in a water bath, add 0.3% (based on polyvinyl alcohol) silicone emulsion, and continue stirring until the solution no longer contains tiny particles.

[0019] (2) Add the silver nitrate solution dropwise to the polyvinyl alcohol solution obtained in step (1), wherein the molar ratio of silver nitrate to polyvinyl alcohol is 1 / 600, and stir and mix evenly.

[0020] (3) Under continuous stirring, add ultrasonically dispersed zirconium dioxide and aluminum oxide powders with a particle size of 25 to 45 nanometers into the above mixture, and the atomic ratio of Zr, Al and Ag is 100:40: 5. Continue stirring for 2 hours to form a uniform colloidal solution.

[0021] (4) Immerse the cleaned...

Embodiment 3

[0023] (1) Slowly add polyvinyl alcohol powder with an average molecular weight of 90,000 and a degree of alcoholysis of 80% to distilled water at about 20°C under constant stirring. The mass ratio of polyvinyl alcohol to water is 1:50. After fully swelling, use Heat the solution to about 90°C in a water bath, and at the same time add 0.4% (based on polyvinyl alcohol) silicone emulsion, and continue stirring until the solution no longer contains tiny particles.

[0024] (2) Add the silver nitrate solution dropwise into the polyvinyl alcohol solution obtained in step (1), wherein the molar ratio of silver nitrate to polyvinyl alcohol is 1 / 400, and stir and mix evenly.

[0025] (3) Under continuous stirring, add ultrasonically dispersed zirconium dioxide and aluminum oxide powders with a particle size of 25 to 45 nanometers into the above mixture, and the atomic ratio of Zr, Al and Ag is 100:50: 10. Continue to stir for 2 hours to form a uniform colloidal solution.

[0026] (4)...

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Abstract

The invention relates to a method for preparing a nano zirconia-alumina composite oxide film containing silver particles, which is characterized by comprising the following steps: taking AgNO3, ZrO2 and Al2O3 nano particles as starting materials, and polyvinyl alcohol as a film-forming material, and forming an even film containing the silver particles and nano zirconia-alumina composite oxides on the surface of a base material through impregnation, film forming and heating reduction, wherein the particle size of the silver particles is between 3 and 10 nanometers, and the particle size of zirconium dioxide and aluminium sesquioxide is between 25 and 45 nanometers. The film prepared by the method has good thermal stability and long service life, and can be used for preparing resource-saving high-efficiency automobile tail gas catalytic cleaner, indoor coatings for catalyzing and degrading pollutants and the like.

Description

technical field [0001] The invention relates to a method for preparing a nanometer catalyst film, in particular to a catalyst film mainly composed of silver-containing zirconium-aluminum composite oxide, belonging to the technical field of functional composite film materials. Background technique [0002] Catalytic materials have a wide range of applications in the fields of environment, chemical industry, energy, and material manufacturing, and are indispensable materials for many important chemical processes. Such as motor vehicle exhaust purification catalytic materials, hydrogenation catalytic materials, fuel cell catalytic materials, etc. play an important role in these fields. The development and application of catalytic materials and new preparation technologies have always been a hot spot in catalyst research. Nano-catalytic materials have been widely used in industrial processes, and the use of nano-composite oxides with certain defects to catalyze the degradation ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/50B01J21/06B01J35/02B01J35/00
Inventor 周考文陈魏张鹏
Owner BIOCHEM ENG COLLEGE OF BEIJING UNION UNIV