Method for supporting nano titanic oxide on surface of carrier material

A technology of nano-titanium dioxide and carrier materials, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of nanoparticle erosion and difficult control, and achieve the best performance effect

Inactive Publication Date: 2009-07-22

SOUTHEAST UNIV

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AI-Extracted Technical Summary

Problems solved by technology

However, this method is not easy to control and...

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Method used

[0027] (1) carrier material preparation. Take foamed nickel as the carrier according to the needs, first wash with water to remove the dust on the surface, and then immerse in the mixed so...

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Abstract

The invention provides a method for loading nanometer titanium dioxide on the surface of a carrier material. The method is characterized in that: the carrier material is washed; by using a silicasol solution with the weight percentage of between 5 and 25 percent, a binder coating is prepared on the surface of the carrier; and the binder coating is sprayed with a nanometer TiO2 ethanol suspension, so that the nanometer TiO2 is loaded on the surface of the carrier material. Because the binder is coated first, and then the nanometer TiO2 material is adhered to the surface of the carrier, the nudity of the nanometer particle is ensured maximally. The coating of the binder and the adhesion of the photocatalyst are completed by different working procedures, the distribution condition of the binder on the carrier surface and the loading capacity of the catalyst can be adjusted more easily as required, so that the best performance is achieved.

Application Domain

Nanostructure manufactureWater/sewage treatment by irradiation +3

Technology Topic

Titanium dioxideOxide +5

Image

Examples

Experimental program(5)

Example Embodiment

[0021] Example 1:

[0022](1) Preparation of carrier material. Take the glass as the carrier according to the need, first wash with water to remove the dust on the surface, and then immerse it in NaOH-Na 2 CO 3 Cleaning in the mixed solution, NaOH and Na in the mixed solution 2 CO 3 The mass concentration is 5% to wash off the surface oil stains, and finally rinse with deionized water, and dry for use.

[0023] (2) Nano TiO 2 Preparation of ethanol suspension. Take 0.5g nano TiO 2 The powder was mixed with 200ml of absolute ethanol and treated in a ball mill at 450r/min for 15h to obtain a uniformly dispersed nano-TiO with a concentration of 2.5g/L 2 Ethanol suspension.

[0024] (3) Adhesive coating. The treated glass carrier material is immersed in a silica sol solution with a concentration of 25 wt%, and then taken out after being fully immersed; the coating is completely dried and then immersed in a silica sol solution with a concentration of 5 wt%, and then taken out after being fully immersed. After the coating is completely dried, it is immersed in a silica sol solution with a concentration of 25% by weight, fully immersed and taken out, the carrier is placed horizontally to dry for 5 minutes, and then the next step is carried out.

[0025] (4) Nano TiO 2 load. TiO 2 The suspension was put into a sprayer, and the nozzle was sprayed at a distance of 200mm from the surface of the glass carrier. After spraying, the interval is 3 minutes, and the next spraying is carried out for a total of 3 sprays. After the last spray, dry at room temperature to get the surface loaded nano-TiO 2 Glass material.

Example Embodiment

[0026] Example 2:

[0027] (1) Preparation of carrier material. Take the foamed nickel as the carrier as needed, wash it with water first to remove the dust on the surface, and then immerse it in NaOH-Na 2 CO 3 Cleaning in the mixed solution, NaOH and Na in the mixed solution 2 CO 3 The mass concentration is 5% to wash off the surface oil stains, and then soak in a 5% HCl solution for 10 minutes to improve the wettability with silica sol. Finally, it is washed with deionized water and dried for later use.

[0028] (2) Nano TiO 2 Preparation of ethanol suspension. Take 0.5g nano TiO 2 The powder is mixed with 500ml of absolute ethanol and treated in a ball mill at 500r/min for 12h to obtain a uniformly dispersed nano-TiO with a concentration of 1g/L 2 Ethanol suspension.

[0029] (3) Adhesive coating. The treated foamed nickel carrier material is immersed in a silica sol solution with a concentration of 10% by weight, fully immersed and taken out. After the coating is completely dried, it is immersed in a silica sol solution with a concentration of 10% by weight, fully immersed and then taken out, the carrier is placed horizontally to dry for 12 minutes, and then the next step is carried out.

[0030] (4) Nano TiO 2 load. TiO 2 The suspension was put into a sprayer, and the nozzle was sprayed at a distance of 200mm from the surface of the nickel foam carrier. After spraying, the next spraying is performed at an interval of 5 minutes, and the spraying is 5 times in total. After the last spray, dry at room temperature to get the surface loaded nano-TiO 2 Of foamed nickel material.

Example Embodiment

[0031] Example 3:

[0032] (1) Preparation of carrier material. Take porous ceramics as the carrier as needed, first wash with water to remove the dust on the surface, and then immerse it in NaOH-Na 2 CO 3 Cleaning in the mixed solution, NaOH and Na in the mixed solution 2 CO 3 The mass concentration is 5% to wash off the surface oil stains, and finally rinse with deionized water, and dry for use.

[0033] (2) Nano TiO 2 Preparation of ethanol suspension. Take 0.1g nano TiO 2 The powder is mixed with 200ml of absolute ethanol and treated in a ball mill at 400r/min for 8h to obtain a uniformly dispersed nano-TiO with a concentration of 0.5g/L 2 Ethanol suspension.

[0034] (3) Adhesive coating. The treated porous ceramic carrier material is immersed in a silica sol solution with a concentration of 5 wt%, and taken out after being fully immersed; the coating is completely dried and then immersed in a silica sol solution with a concentration of 25 wt%, and then taken out after being fully immersed. After the coating is completely dried, it is immersed in a silica sol solution with a concentration of 5 wt%. After being fully immersed, it is taken out, and the carrier is placed horizontally to dry for 20 minutes, and then the next step is carried out.

[0035] (4) Nano TiO 2 load. TiO 2 The suspension was put into a sprayer, and the nozzle was sprayed at a distance of 200mm from the surface of the porous ceramic carrier. After spraying, the interval is 15 minutes, and the next spraying is performed for 6 times. After the last spray, dry at room temperature to get the surface loaded nano-TiO 2 Of porous ceramic materials.

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Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Classification and recommendation of technical efficacy words

Excellent performance

Method for supporting nano titanic oxide on surface of carrier material

A technology of nano-titanium dioxide and carrier materials, applied in chemical instruments and methods, nanotechnology, nanotechnology, etc., can solve the problems of nanoparticle erosion and difficult control, and achieve the best performance effect

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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