Method for preparing composite photocatalyst containing activated carbon coating

A photocatalyst, activated carbon technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as low strength, prolong service life, improve light transmission, and uniform size distribution. Effect

Inactive Publication Date: 2010-06-30
海盐华强树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a preparation method for a composite photocatalyst containing activated carbon coating, which uses activated carbon coating material as a photocatalyst carrier, which can effectively improve the dispersion of titanium dioxide active components It overcomes the shortcomings of existing activated carbon materials such as loose structure and low strength, and improves the mass transfer process of light in the system and pollutants to the surface of the catalyst.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Embodiment 1 The preparation method that contains active carbon coating composite type photocatalyst comprises the steps:

[0031] 1. Preparation of activated carbon coating material: ultrasonically clean a porous foam ceramic plate with a porosity of 75% for 20 minutes, dry it at 110°C for 4 hours, put it into a jacket with a solid content of 70 % liquid phenolic resin (solvent is ethanol) container, the porous foam ceramic plate was immersed in the immersion solution for 12 hours; the temperature of the circulating water in the jacket of the container for immersion was 35°C. Take out the porous foam ceramic plate impregnated with phenolic resin from the container, centrifuge at a speed of 1500r / min to remove excess resin, place it at room temperature for 12 hours, put it into an oven for curing treatment, and start the temperature at 70°C to The temperature was raised to 150°C at a heating rate of 3°C / min and kept for 2 hours. The cured ceramic-resin material was hea...

Embodiment 2

[0035] Embodiment 2 The preparation method that contains active carbon coating composite type photocatalyst comprises the steps:

[0036] 1. Preparation of ceramic-activated carbon coating composite material: Ultrasonic cleaning of a porous foam ceramic plate with a porosity of 55% for 20 minutes, drying at 110°C for 4 hours, and then putting it into a jacketed container filled with excess thermosetting phenolic resin In the process, the porous foam ceramic plate was immersed in the immersion solution for 12 hours; the temperature of the circulating water in the jacket of the immersion vessel was 45°C. Take out the porous foam ceramic plate impregnated with phenolic resin from the container, centrifuge at a speed of 1500r / min to remove excess resin, place it at room temperature for 12 hours, put it into an oven for curing treatment, start at 70°C, and heat at 4 The heating rate of °C / min was increased to 150 °C, and the temperature was kept for 2 hours. The cured ceramic-resi...

Embodiment 3

[0040] Embodiment 3 The preparation method of composite photocatalyst containing active carbon coating comprises the following steps:

[0041] 1. The preparation method of the ceramic-activated carbon coating composite material: ultrasonically clean the porous foam ceramic tube with a porosity of 90% for 20 minutes, dry it at 110°C for 4 hours, put it into a jacket with an excess thermosetting In the container of phenolic resin, the porous foamed ceramic tube was immersed in the immersion solution for 16 hours; the temperature of the circulating water in the jacket of the immersion container was 35°C. Take the porous foam ceramic tube impregnated with phenolic resin out of the container, blow off the excess resin with air, place it at room temperature for 10 hours, put it in an oven for curing treatment, start at 70°C, and heat up at a rate of 1°C / min The rate was raised to a temperature of 150° C., and the temperature was maintained for 2 hours. The cured ceramic-resin mater...

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PUM

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Abstract

The invention discloses a method for preparing composite photocatalyst containing activated carbon coating. In the method, activated carbon as coating is attached on foam material matrix, so that activated carbon coating material is formed, the activated carbon coating material is used as carrier to carry titanium dioxide, wherein the titanium dioxide as an active component is 1 percent to 10 percent by weight, the activated carbon coating is 4 percent to 15 percent by weight, and the balance is the foam material matrix. Since the method uses the activated carbon coating as photocatalyst carrier, the dispersibility of the titanium dioxide as an active component can be effectively enhanced, the defects of the traditional activated carbon material, including loose structure and low strength, are overcome, the transmission of light in a system is improved, the process of transferring pollutant to the catalyst surface is improved, and moreover, the service life of activated carbon can be greatly prolonged.

Description

technical field [0001] The present invention relates to a semiconductor titanium dioxide (TiO 2 ) is a preparation method of a photocatalyst with an active component, and this catalyst is particularly suitable for purifying indoor air. Background technique [0002] In recent years, with the extensive use of indoor building decoration materials and household chemicals, indoor air pollution has attracted more and more attention. Surveys show that the concentration of organic matter in indoor air is higher than outdoor, even higher than in industrial areas. At present, hundreds of organic substances have been identified from indoor air, some of which are carcinogens. Coatings, adhesives, paints, plywood, floor leather, wallpaper, etc. used in living rooms and offices can release volatile organic compounds into the air, causing indoor pollution. The research results of the main indoor gas pollutants formaldehyde and toluene show that titanium dioxide (TiO 2 ) photocatalytic ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18B01J21/06B01J37/02B01J35/10B01D53/86B01D53/72
Inventor 胡以强郭小青刘卫民武岳峰
Owner 海盐华强树脂有限公司
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