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Foamed ceramic based photocatalytic component and preparation method thereof

A technology of foam ceramics and photocatalysis, applied in chemical instruments and methods, separation methods, catalyst carriers, etc., to achieve good permeability, contact promotion, and good catalytic effect

Inactive Publication Date: 2013-01-16
SUZHOU INDAL TECH RES INST OF ZHEJIANG UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Up to now, no one has reported the high specific surface area porous TiO with fine grains and uniform pore and pore size distribution on foam ceramics. 2 The preparation method of the film, and applying the prepared photocatalytic component to the degradation of low-concentration formaldehyde and benzene series in indoor air

Method used

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  • Foamed ceramic based photocatalytic component and preparation method thereof
  • Foamed ceramic based photocatalytic component and preparation method thereof
  • Foamed ceramic based photocatalytic component and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0037] 1). The SiC foam ceramics (with a porosity of 75%) were ultrasonically cleaned with acetone for 20 minutes, then deionized water for 20 minutes, and finally dried at 60° C. for use.

[0038] 2). Mix and stir 35ml tetrabutyl titanate, 40ml absolute ethanol, and 40ml glacial acetic acid for 30 minutes, then add a mixed solution of 5.4ml deionized water and 40ml absolute ethanol, and stir for 1 hour to obtain a stable, uniform and transparent TiO 2 Sol.

[0039] 3). Add commercial degussa P25 and polyethylene glycol 400, the amount of P25 added is TiO in the sol 2 content of 45%, the addition of polyethylene glycol 400 is TiO 2 8% of the content.

[0040] 4). Immerse the ceramic foam in 1) completely in the sol, take it out after ultrasonication for 10 minutes, and dry it at 80°C. This step is repeated 3 times.

[0041] 5). Put the ceramic foam in 4) in a muffle furnace, burn it at 450°C for 2 hours, and take it out after the muffle furnace cools down to below 60°C.

...

Embodiment 2

[0045] 1). Al 2 o 3 The foamed ceramics (with a porosity of 75%) were ultrasonically cleaned with acetone for 20 minutes, then deionized water for 20 minutes, and finally dried at 60° C. for use.

[0046] 2). Mix and stir 35ml tetrabutyl titanate, 40ml absolute ethanol, and 40ml glacial acetic acid for 30 minutes, then add a mixed solution of 5.4ml deionized water and 40ml absolute ethanol, and stir for 1 hour to obtain a stable, uniform and transparent TiO 2 Sol.

[0047] 3). Add commercial Degussa P25 and polyethylene glycol 400, the amount of P25 added is TiO in the sol 2 content of 20%, the addition of polyethylene glycol 400 is TiO 2 5% of the content.

[0048] 4). Immerse the ceramic foam in 1) completely in the sol, take it out after ultrasonication for 10 minutes, and dry it at 80°C. This step is repeated once.

[0049] 5). Put the ceramic foam in 4) in a muffle furnace, burn it at 300°C for 2 hours, and take it out after the muffle furnace cools down to below 60°...

Embodiment 3

[0052] 1). Al 2 o 3 The foamed ceramics (with a porosity of 75%) were ultrasonically cleaned with acetone for 20 minutes, then deionized water for 20 minutes, and finally dried at 60° C. for use.

[0053] 2). Mix and stir 20ml tetrabutyl titanate, 30ml absolute ethanol, and 20ml glacial acetic acid for 30 minutes, then add a mixed solution of 10ml deionized water and 40ml absolute ethanol, and stir for 1 hour to obtain a stable, uniform and transparent TiO 2 Sol.

[0054] 3). Add commercial Degussa P25 and polyethylene glycol 400, the amount of P25 added is TiO in the sol 2 content of 40%, the addition of polyethylene glycol 400 is TiO 2 15% of the content.

[0055] 4). Immerse the ceramic foam in 1) completely in the sol, take it out after ultrasonication for 10 minutes, and dry it at 80°C. This step is repeated 5 times.

[0056] 5). Put the ceramic foam in 4) in a muffle furnace, burn it at 400°C for 2 hours, and take it out after the muffle furnace cools down to below ...

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Abstract

The invention discloses a foamed ceramic based photocatalytic component and a preparation method thereof. The foamed ceramic based photocatalytic component is formed by loading nano TiO2 on foamed ceramic. The preparation method includes: (1) preparing TiO2 sol, adding P25 and polyethylene glycol 400 into the sol, and uniformly mixing to obtain mixed liquor; (2) soaking the foamed ceramic cleaned and dried in advance into the mixed liquor, performing ultrasonic treatment, taking the foamed ceramic out after ultrasonic treatment is finished, drying, and repeating the steps for several times to obtain the foamed ceramic loaded with TiO2; and (3) calcining the foamed ceramic loaded with the TiO2 so that the foamed ceramic based photocatalytic component is obtained. The foamed ceramic based photocatalytic component and the preparation method provide a novel idea for the photocatalytic technology on load and application, and the preparation method is simple to operate and low in cost and has excellent industrialization prospects.

Description

technical field [0001] The invention relates to the technical field of environmental protection, in particular to a foam ceramic-based photocatalytic component and a preparation method thereof. Background technique [0002] With the rapid economic development in recent decades, indoor air pollution has attracted more and more people's attention. Traditional pollution control methods include ventilation, planting green plants, etc. Today, with the rapid development of science and technology, environmentally friendly coatings, photocatalysts and air purifiers have become the mainstream of the market. However, coatings and photocatalysts contain a large amount of film-forming substances and additives, which are easy to coat the catalyst particles, which isolates the contact between the catalyst and pollutants, making it unable to function; most air purifiers use activated carbon adsorption as the main technology. Just transferring indoor air pollutants from the gas phase to th...

Claims

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Application Information

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IPC IPC(8): B01J27/224B01J21/06B01J32/00B01J35/10B01D53/86B01D53/72
Inventor 郭森王韶昱吴忠标郭国良周剑锋
Owner SUZHOU INDAL TECH RES INST OF ZHEJIANG UNIV
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