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Preparation method of modified film by nanometer titanium dioxide doped of noble metal rare earth oxide

A nano-titanium dioxide and rare earth oxide technology, which is applied to devices for coating liquid on surfaces, pretreatment surfaces, coatings, etc., can solve problems such as application limitations, achieve low manufacturing cost, simple process, and inhibit the formation of urine scale Effect

Inactive Publication Date: 2007-03-21
付飘敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Today's nano-titanium dioxide is non-toxic, easy to obtain raw materials, and has strong photocatalytic properties, so it is used in photocatalytic degradation of organic matter, sterilization and preparation of self-cleaning films. However, the above properties are only manifested in There are areas irradiated by ultraviolet light less than 387nm, and the proportion of ultraviolet rays in sunlight is very small (about a few thousandths), which greatly limits the application of this type of film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The glass substrate that makes silicon dioxide spacer layer in (2) step is placed in containing and contains 15% butyl titanate prepared by (3) program, 1% analytical pure nitric acid 2% acetylacetone, 1.0% cerium nitrate , soaked in 0.001% Henkel LS-45, 0.5% ammonium fluoride sol for 2 minutes, pulled out the substrate at a speed of 10 cm / min, placed it in a 120°C oven to evaporate the solvent, and then used 1700KHz An ultrasonic spraying device was used to spray solution B on the substrate at a moving speed of 50 cm / min. In a nitrogen atmosphere, heat at a rate of 2-10°C / min, heat to 500°C and keep it warm for 1-2 hours. Sample 1 was prepared.

Embodiment 2

[0019] Place the glass substrate of the silicon dioxide spacer made in (2) step into the cerium nitrate containing 18% butyl titanate, 1% nitric acid, 3% acetylacetone, 1.2% prepared by (3) procedure, Soak in 0.001% Henkel LS-45, 1% ammonium fluoride sol for 2 minutes, pull out the substrate at a speed of 10 cm / min, place it in a 120°C oven to evaporate the solvent, and then use a 1700KHz Ultrasonic spraying device, solution B is sprayed on the substrate at a moving speed of 50 cm / min. In a nitrogen atmosphere, heat at a rate of 2-10°C / min, heat to 500°C and keep it warm for 1-2 hours. Sample 2 was obtained.

Embodiment 3

[0021] The glass substrate that makes silicon dioxide spacer layer in (2) step is placed in containing 20% ​​butyl titanate prepared by (3) program, 1% analytical pure nitric acid, 3% acetylacetone, the nitric acid of 1.5% Soak cerium, 0.001% Henkel LS-45, 5% ammonium fluoride sol for 2 minutes, pull out the substrate at a speed of 10 cm / min, place it in a 120°C oven to evaporate the solvent, and then use 1700KHz ultrasonic spray device, spray solution B on the substrate at a moving speed of 50 cm / min. In a nitrogen atmosphere, heat at a rate of 2-10°C / min, heat to 500°C and keep it warm for 1-2 hours. Sample three was obtained.

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Abstract

A process for preparing the film modified by nano-TiO2 doped of noble metal-RE oxide features the combination of the RE doped and modified TiO2 sol-gel method with the ultrasonic spray-thermodecomposing method of silver nitrate solution. Said sol is prepared from methanol-ethanol mixture, Ti precursor, ammonium fluoride, soluble RE salt, surfactant, catalyst and stabilizer. Its resultant film has high catalytic activity for decomposing harmful gas in room.

Description

technical field [0001] The invention belongs to the technical field of new nanometer materials, and in particular relates to a preparation method of a noble metal rare earth oxide doped nano-titanium dioxide modified film having catalytic activity under ultraviolet and visible light. Background technique [0002] Today's nano-titanium dioxide is non-toxic, easy to obtain raw materials, and has strong photocatalytic properties, so it is used in photocatalytic degradation of organic matter, sterilization and preparation of self-cleaning films, but the above properties are only shown in There are areas irradiated by ultraviolet light less than 387nm, and the proportion of ultraviolet rays in sunlight is very small (about a few thousandths), which greatly limits the application of this type of film. Therefore, the preparation of modified photocatalyst materials and thin films with catalytic activity under ultraviolet and visible light has become a research hotspot for scientists...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B05D5/00B05D7/24B05D1/18B05D1/02B05D3/02
Inventor 付飘敏高重礼
Owner 付飘敏