Preparation method of titanium dioxide-zirconium oxide composite fibers

A titanium dioxide and composite fiber technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problem of reducing the photocatalytic contact area of ​​titanium dioxide, reducing the contact area between titanium dioxide and degraded substances, and reducing the photocatalytic effect of titanium dioxide. Catalytic effect and other issues, to achieve full utilization of specific surface area, easy separation, and improved catalytic performance

Active Publication Date: 2013-06-05
山东德艾普节能材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the method of this patent document improves the weather resistance and durability of titanium dioxide, it reduces the photocatalytic contact area of ​​titanium dioxide and reduces the photocatalytic effect of titanium dioxide
After the surface of titanium dioxide particles is coated with other materials, the contact area between titanium dioxide and degraded substances will be reduced, and the photocatalytic effect of titanium dioxide will be reduced to a certain extent.

Method used

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  • Preparation method of titanium dioxide-zirconium oxide composite fibers
  • Preparation method of titanium dioxide-zirconium oxide composite fibers
  • Preparation method of titanium dioxide-zirconium oxide composite fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] (1) Dissolve 2.41g of polyacetylacetonate zirconium (PAZ) and 30.60g of tetrabutyl titanate (molar ratio 1:9, molar ratio of zirconia to titania, the same below) in 100ml of anhydrous methanol, room temperature Stir for 30 minutes until completely dissolved, and mix well. Concentrate the mixed solution under reduced pressure at 32-37°C to remove part of the methanol solvent to obtain a sol with a viscosity of about 30 Pa·s, and let it stand at room temperature for 24 hours to homogenize and defoam to obtain a golden yellow spinnable solution.

[0028] (2) Pour the spinnability solution obtained in (1) into the centrifugal spinning disk, and spin by centrifugal spinning method, at a temperature of 10°C, a centrifuge speed of 10000r / min, and a spinning hole line speed of 50m / s, under the condition that the spinning hole diameter is 0.5 mm, the spinning liquid is thrown out from the spinning hole at high speed to obtain titania-zirconia composite precursor fibers. Precur...

Embodiment 2

[0032] As described in Example 1, the difference is that 4.82g PAZ and 27.20g tetrabutyl titanate (molar ratio 2:8) were successively dissolved in 100ml of anhydrous methanol, stirred at room temperature for 30min until completely dissolved, mixed evenly, and then Concentrate under reduced pressure and evaporate part of methanol to obtain spinnable sol. The obtained titania-zirconia composite fiber has the effect of photocatalytic degradation of methyl orange as follows: Figure 5 shown, namely Figure 5 The bottom curve in 20%ZrO 2 -TiO 2 .

Embodiment 3

[0034] As described in Example 1, the difference is that 1.205g PAZ and 33.32g tetrabutyl titanate (molar ratio 5:95) were successively dissolved in 100ml of anhydrous methanol, stirred at room temperature for 30min until completely dissolved, mixed evenly, and then Concentrate under reduced pressure and evaporate part of methanol to obtain spinnable sol. The obtained titania-zirconia composite fiber has the effect of photocatalytic degradation of methyl orange as follows: Figure 5 shown, namely Figure 5 Middle curve 5%ZrO 2 -TiO 2 .

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Abstract

The invention relates to a preparation method of titanium dioxide-zirconium oxide composite fibers, which comprises the following steps: dissolving polyacetylacetonatozirconium in an alcohol solvent, adding 95-5 mol% of zirconium oxide and 5-95 mol% of titanium dioxide into an organic titanium compound, and concentrating at 32-45 DEG C under reduced pressure until the solution viscosity reaches 10-50 Pa.s, thereby obtaining a spinning solution; and carrying out centrifuging spinning to obtain titanium dioxide-zirconium oxide composite precursor gel fibers, and carrying out high-heat treatment to obtain the high-quality titanium dioxide-zirconium oxide composite fibers. The titanium dioxide-zirconium oxide fibers can be reprocessed into fiber cloth, paper or any other shape; and on the premise of keeping the catalytic activity, the specific area can be fully utilized, and the photocatalysis effect is good.

Description

technical field [0001] The invention belongs to the field of oxide polycrystalline fiber materials, and in particular relates to a titanium dioxide-zirconia composite oxide fiber and a preparation method thereof. Background technique [0002] Zirconia (ZrO 2 ) Among oxides, in addition to having extremely high melting point, minimum thermal conductivity, minimum high temperature vapor pressure and excellent acid and alkali corrosion resistance, it is also the only compound that has both acid-alkaline and oxidation-reduction properties, It has good thermal stability and good mechanical properties, and has been widely used as a catalyst or catalyst carrier. Titanium dioxide (TiO 2 ) As a photocatalytic oxidation catalyst, under the irradiation of ultraviolet-visible light or near-ultraviolet-visible light, various organic pollutants can be converted into CO at room temperature 2 and H 2 O. TiO 2 As a green photocatalyst, it has been widely researched and applied in the f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J35/06C02F1/30
Inventor 朱陆益许东王新强刘雪松张光辉
Owner 山东德艾普节能材料有限公司
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