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Method of loading titanium dioxide photo catalyst on metal surface

A technology of titanium dioxide and photocatalyst, which is applied in the direction of physical/chemical process catalysts, chemical instruments and methods, catalyst activation/preparation, etc., can solve problems such as weak coating, metal surface corrosion, etc., and achieve improved catalytic activity, low cost, and good performance. The effect of stability

Inactive Publication Date: 2003-04-16
CHINA UNIV OF GEOSCIENCES (WUHAN) +1
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

However, there are disadvantages such as weak coating and too little amount of catalyst loaded on the metal surface wall directly by using this method. Most of the current sol-gel methods are carried out in acidic medium, which has a certain corrosion effect on the metal surface.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0024] Taking the metal aluminum sheet as an example, the specific implementation method is as follows:

[0025] (1) Gently wipe the surface of the metal aluminum sheet with a fine emery cloth (paper), and clean the surface with a soft cloth or brush;

[0026] (2) Prepare 0.25mol / L oxalic acid solution and 0.5mol / L sulfuric acid solution, mix them in a volume ratio of 1:1, use graphite as the cathode, and use the metal sheet to be treated as the anode, and connect them to an adjustable voltage DC power supply Above, according to the area of ​​the metal aluminum sheet, according to the current density of 25-80A / m 2 Adjust the current and carry out oxidation treatment at a room temperature of 10-35°C for 60-120 minutes. The used electrolyte can be used many times;

[0027] (3) Take out the metal aluminum sheet, rinse it with water, soak it in pure water for 1-20 hours, and then burn it at 350°C for 30-120 minutes;

[0028] (4) According to the volume ratio of 80:15:4:1, mix e...

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Abstract

A process for carrying TiO2 photocatalyst on metal surface includes such steps as cleaning metal surface, anodizing in acidic medium, hydrolyzing, leaching and coating tetrabutyl titanate and TiO2 film under the weak alkaline condition by the sol-gel-powder suspension method, and igniting at proper temp. Its advantages are strong photocatalysis action for degradating organic pollutants, and good electric conductivity and machinability.

Description

technical field [0001] The invention relates to a chemical method for loading titanium dioxide photocatalyst on the metal surface, which can make the metal surface wall and titanium dioxide into an integrated photo(electric) catalyst. It belongs to the field of environmental pollution control technology and the field of new energy research. Metal-supported titanium dioxide can be used as a photocatalyst for degrading organic pollutants, and can also be used as an anode material for photocatalytic reactions. Experimental device materials for solar photolysis of water to produce hydrogen fuel, etc. Background technique [0002] Photocatalytic materials represented by titanium dioxide have been extensively studied after the discovery of the phenomenon of continuous redox reaction on the surface of titanium dioxide after being irradiated by light. Studies in recent years have shown that the photocatalysis of titanium dioxide has attractive application prospects in solar energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J37/02
Inventor 赵中一金继红王洪梅
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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