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Preparation method of nano titanium dioxide thin film materials loaded on surface of ceramic body

A technology for nano-titanium dioxide and thin-film materials, which is applied in the field of preparation technology of nano-titanium dioxide thin-film materials, can solve the problems of difficult recovery of nano-titanium dioxide powder, low secondary utilization rate, difficult popularization and application, etc. The effect of uniform film distribution

Inactive Publication Date: 2010-09-01
广州瑞塔光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the problem of this method is that the nano-titanium dioxide powder is not easy to recycle, the secondary utilization rate is low, and the cost is too high, so it is difficult to popularize and apply.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Add 10 g of titanyl sulfate powder into 2000 g of deionized water, then stir, and add 50 g of ammonia solution while stirring (the ammonia water is diluted with deionized water before stirring), and the pH of the solution is adjusted to 6.5. After centrifugation, the obtained slurry was washed twice with deionized water, then added to 500 g of a mixed solution of absolute ethanol and acetylacetone, wherein the volume ratio of absolute ethanol and acetylacetone was 1:4, and then added 2.5g sodium dodecylbenzene sulfonate, fully stirred until a stable titanium dioxide sol is formed, after standing for 1h, the clean ceramic body is made into a ceramic ball shape with a diameter of 2cm, soaked in the prepared titanium dioxide sol, 15 Take it out after 10 minutes, then repeat the soaking again, take out the ceramic ball, then dry it, calcinate it in a muffle furnace at 500°C for 2 hours, then cool it to room temperature, and form a layer of nanometer titanium dioxide film mat...

Embodiment 2

[0016] Add 8 g of titanyl sulfate powder into 1800 g of deionized water, then stir, and add 100 g of urea granules while stirring to adjust the pH of the solution to 7. After centrifugation, the obtained slurry was washed twice with deionized water, and then added to 450 g of a mixed solution of absolute ethanol and acetylacetone, wherein the volume ratio of absolute ethanol and acetylacetone was 1:4, and then added 2g sodium dodecylbenzene sulfonate, stir well until a stable titanium dioxide sol is formed, place it for 1h, then make the clean ceramic body into a ceramic ball shape with a diameter of 4cm, soak it in the prepared titanium dioxide sol for 15 minutes Take it out, then repeat the immersion again, take out the ceramic ball, then dry it, and after calcination in a muffle furnace at 550°C for 2 hours, cool to room temperature, and form a layer of nano-titanium dioxide film material on the surface of the ceramic ball, and at the same time, the nano-titanium dioxide fil...

Embodiment 3

[0018] Add 6 g of titanium tetrachloride powder into 1500 g of deionized water, then stir, and add 50 g of ammonium bicarbonate while stirring to adjust the pH of the solution to 6.5. After centrifugation, the obtained slurry was washed twice with deionized water, then added to 400 g of a mixed solution of absolute ethanol and acetylacetone, the volume ratio of absolute ethanol and acetylacetone was 1:4, and then 2 g of hydroxy Propyl cellulose, stir well until a stable titanium dioxide sol is formed. After standing for 1 hour, make the ceramic body into a ceramic bar shape with a diameter of 6 cm, soak it in the prepared titanium dioxide sol for 15 minutes, take it out, and then repeat the soaking again , take out the ceramic strip, then dry it, and then calcine it in a muffle furnace at 500°C for 2 hours, then cool it to room temperature, and form a layer of nano-titanium dioxide film material on the surface of the ceramic strip, and the ceramic strip loaded with nano-titaniu...

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Abstract

The invention provides a preparation method of nano titanium dioxide thin film materials loaded on the surface of a ceramic body. The preparation method comprises the following steps of: adding the organic titanium salt to the de-ionized water and stirring the de-ionized water and adding alkali liquor to adjust the pH value to be 6 to 8; centrifuging for separating the mixed solution, and adding the separated slurry to the mixed solution of absolute ethyl alcohol and acetylacetone; adding the dispersing agent to the mixed solution, sufficiently and uniformly stirring the mixed solution till the stable titanium dioxide sol is formed; soaking the high-temperature resistance and corrosion resistance ceramic body into the titanium dioxide sol, drying and forging the ceramic body for 2 to 4 hours to form one layer of nano titanium dioxide thin film material on the surface of the ceramic body. The thin film is distributed uniformly, and the thickness of the thin film is controllable. When being applied to treating the industrial waste water, the ceramic body loaded with nano titanium dioxide thin film can be utilized repeatedly and has low cost and no secondary pollution.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a preparation process of a nano-titanium dioxide film material loaded on the surface of a ceramic body. Background technique [0002] Under the irradiation of light, nano-titanium dioxide photocatalyst converts light energy into highly oxidizing hydroxyl groups and active oxygen, which can decompose almost all organic substances harmful to the environment, such as formaldehyde, pesticides, and organic compounds containing benzene ring series. Since the photocatalyst does not participate in other chemical reactions, it is theoretically a semi-permanent and effective product with very safe and stable performance. Therefore, as a new environmental purification material, photocatalyst has become one of the most concerned focuses in the field of industrial and agricultural wastewater treatment. Compared with other sewage treatment technologies, it has many advantages: low co...

Claims

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Application Information

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IPC IPC(8): C04B41/85
Inventor 周立军
Owner 广州瑞塔光电科技有限公司
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