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Method for subjecting TiO2 photocatalyst to be supported on honeycomb ceramics surface

A honeycomb ceramic carrier and technology of honeycomb ceramics, applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low photocatalytic efficiency, low visible light absorption rate, difficult recovery of catalysts, and no breakthroughs. , to achieve the effects of long-lasting photocatalytic activity, easy control, and difficult recycling

Inactive Publication Date: 2007-05-16
JIANGSU GAOCHUN CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the defect of this technology is: powder TiO 2 The catalyst is difficult to recover, pure TiO 2 Photocatalytic efficiency and low absorption of visible light
At present, although there are many related research reports at home and abroad, no breakthrough in practical application has been achieved so far.

Method used

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  • Method for subjecting TiO2 photocatalyst to be supported on honeycomb ceramics surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-4

[0024] Embodiment 1-4 (pure TiO 2 Preparation of photocatalyst precursor sol)

[0025] Mix n-butyl titanate, hydrochloric acid, ethanol, and water in the molar ratio shown in Table 1 to obtain uniform and transparent pure TiO 2 Precursor Sol Examples 1-4.

Embodiment 5-8

[0026] Embodiment 5-8 (pure TiO 2 Preparation of photocatalyst precursor sol)

[0027] Mix n-butyl titanate, methacrylic acid, isopropanol, and water in the molar ratio shown in Table 1 to obtain uniform and transparent pure TiO 2 Precursor Sol Examples 5-8.

Embodiment 9-12

[0028] Embodiment 9-12 (doping TiO 2 Preparation of precursor sol)

[0029] N-butyl titanate, hydrochloric acid, ethanol, water, and ethylene glycol amine are mixed with silver, iron, and lanthanum ions in different weight percentages shown in Table 1 according to the molar ratio shown in Table 1, and stirred and mixed to obtain Examples 9-12 of each homogeneous, transparent sol.

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Abstract

The invention relates to a method for preparing TiO2 catalyst on the surface carrier of three-dimension beehive ceramic network, wherein it uses orthogonal method to prepare the titanic acid gel and the titanic acid gel with silver, iron, or lanthanum ion; uses dichroite beehive cermai and beehive ceramic as carrier; using gel-sol method to carry the titanic acid gel on the carrier. The load amount of optical catalyst film on the ceramic carrier is 0.21mg / cm2; the TiO2 diameter is 15-20nm; the thickness of load film is 300-400nm; when using it to purify the formaldehyde, and the initial density is 0.42-0.49mg / m3, the formaldehyde density will be lower than 72.2-74% after seven hours; when using it to disinfect, and the initial virus density is 554-924cfu / m3, the virus number is reduced 67.0-75.9% after 14.5h.

Description

technical field [0001] The present invention relates to TiO 2 The preparation method of photocatalyst loaded on the surface of three-dimensional honeycomb ceramic net. technical background [0002] The photocatalytic oxidation method is based on TiO 2 Under the action of ultraviolet light or partial visible light, the catalyst can produce a variety of active oxygen such as hydroxyl radicals and peroxyl radicals with strong oxidizing ability, and finally can mineralize various pollutants into water, carbon dioxide and harmless inorganic substances. At the same time, it can also kill bacteria and various viruses. TiO 2 Non-toxic, stable chemical properties, mild reaction conditions, no secondary pollution, is an ideal photocatalyst. But the defect of this technology is: powder TiO 2 The catalyst is difficult to recover, pure TiO 2 The photocatalytic efficiency and the visible light absorption rate are low. For this purpose, the TiO 2 Catalysts loaded on the surface of ...

Claims

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Application Information

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IPC IPC(8): B01J37/02B01J37/12B01J21/06A61L9/22C02F1/30
Inventor 孔德双孔令仁孔秋明
Owner JIANGSU GAOCHUN CERAMICS
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