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Method for preparing carbon fiber cloth material capable of effectively purifying air

The technology of carbon fiber cloth and activated carbon fiber cloth is applied in the field of sol-gel process doped with rare earth elements, anatase type nano-titanium dioxide film, and carbon fiber cloth material, and achieves the advantages of strong binding force, strong sterilization ability, and improved photocatalytic performance. Effect

Inactive Publication Date: 2012-09-05
北京柯林斯贝科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There have been many documents or patents about the reports of rare earth elements doping in TiO2 (Chinese patent: CN101721990, CN101716519), but the coating of nano-TiO2 modified by rare earth doping on activated carbon fiber cloth has not yet been reported.

Method used

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  • Method for preparing carbon fiber cloth material capable of effectively purifying air
  • Method for preparing carbon fiber cloth material capable of effectively purifying air
  • Method for preparing carbon fiber cloth material capable of effectively purifying air

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Activated carbon fiber cloth loaded with nano-TiO2 was prepared by sol-gel process.

[0016] Raw materials: tetrabutyl titanate (purity ≥ 98.0%) 20ml, acetylacetone (purity ≥ 98.0%) 3ml, absolute ethanol (purity ≥ 99.7%) 55ml, dilute hydrochloric acid (concentration 4%) 2ml, deionized water 20ml, Activated carbon fiber cloth 300×200mm, rare earth oxide (mass ratio La2O3:Y2O3:Eu2O3=1:2:1) 0.17g (calculated by 0.8wt.%).

[0017] First prepare the sol, take 3ml of acetylacetone dropwise into 50ml of absolute ethanol and stir thoroughly, then add 20ml of butyl titanate to make solution A; dissolve the rare earth oxide in 2ml of dilute hydrochloric acid, and then measure 3.5ml of anhydrous Add ethanol and 17.5ml deionized water into it and mix thoroughly to make solution B; then slowly drop solution B into the stirred solution A with a rubber dropper, and stir fully for an appropriate time to obtain a light yellow sol.

[0018] Perform acetone ultrasonic degreasing and deco...

Embodiment 2

[0022] The sol was prepared by using diethanolamine instead of acetylacetone, so as to further prepare the activated carbon fiber cloth loaded with nano-TiO2.

[0023] Raw materials: tetrabutyl titanate (chemically pure, purity ≥ 98.0%) 17.02ml, diethanolamine (analytical pure, purity ≥ 99.0%) 4.08ml, absolute ethanol (analytical pure, purity ≥ 99.7%) 80ml, dilute hydrochloric acid ( Concentration 4%) 2ml, rare earth oxide (mass ratio La2O3:Y2O3:Eu2O3=1:2:1) 0.2g (calculated by 0.8wt.%), activated carbon fiber cloth 300×200mm, deionized water 0.9ml.

[0024] Configure the sol: take 17.02ml of butyl titanate and put it into a 500ml beaker, add 67.28ml of absolute ethanol, and add 4.08ml of diethanolamine as an inhibitor, stir well to prepare a solution; take 0.2g of rare earth oxide and dissolve it in 2ml In dilute hydrochloric acid, add 0.9ml of deionized water and 10ml of absolute ethanol, and stir thoroughly to obtain liquid B; slowly add liquid B to the stirred liquid A wit...

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Abstract

The invention provides a method for preparing carbon fiber cloth material capable of effectively purifying air by utilizing the sol-gel process. The method is characterized by comprising the following steps of: preparing a compound containing titanium element into sol, and coating on activated carbon fiber cloth; and then turning the sol into gel, and performing heat treatment on the carbon cloth with the gel. The method has the advantages of preparing the carbon fiber cloth with uniform distribution, stable anatase-structure phase and appropriate TiO2 content, wherein TiO2 is doped with rare-earth element, thereby being conductive to the modification of TiO2 and the improvement of the sterilization rate; simultaneously, by adopting the manufacturing method, the cost is reduced, the air purifying performance of the carbon fiber cloth is improved, the nano TiO2 is firmly combined with the carbon fiber cloth, and no shedding happens when wind blow-sweeping can be performed continuously for 240 hours at a high wind speed. The method not only has innovative significance for the preparation of environment-friendly material, but also has the promoting effect on the theory and practices of the field of environment-friendly material. The carbon fiber cloth coated with the nano TiO2 has the effect of removing ozone in a breathing zone; simultaneously, the removal rate of white staphylococcus polluted artificially is as high as 99.97%; the average removal rate of natural bacteria in indoor air in an unmanned state is 95.34%; and the ultraviolet radiation intensity is 217.8-230.5 mu m / cm<2>. The carbon fiber cloth containing TiO2 can be widely used in indoor air purification, can improve the air quality, is conductive to environmental protection and can create economic and social benefits.

Description

technical field [0001] The invention relates to a method for preparing a carbon fiber cloth material capable of effectively purifying the air, and in particular provides a sol-gel process doped with rare earth elements, which can prepare an anatase nano-titanium dioxide film with bactericidal effect, It belongs to the field of fine chemicals. Background technique [0002] With the acceleration of urbanization in our country, the density of urban population has increased sharply. People often live, work and play in a small and closed environment, resulting in long-term exhaust gas from people staying indoors. Bacteria continue to breed and indoor air is filthy. On the other hand, urban industrial pollution and vehicle exhaust emissions lead to serious outdoor air pollution. The air containing a large number of bacteria and dust enters the room through air conditioning and other channels, which will also pose a threat to human health. Therefore, air purification (sterilizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/10A61L9/18
Inventor 袁在田
Owner 北京柯林斯贝科技有限公司
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