Method for preparing semiconductor oxide catalyst with synergistic effect of light and heat

A photothermal synergy and semiconductor technology, applied in the direction of catalyst activation/preparation, metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, etc., can solve the problems of expensive equipment and inability to realize industrialization, and achieve Improved degradation efficiency, excellent catalytic stability, and efficient catalytic degradation effects

Inactive Publication Date: 2010-06-09
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this kind of equipment is relatively expensive and cannot achieve large-scale industrialization.

Method used

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  • Method for preparing semiconductor oxide catalyst with synergistic effect of light and heat
  • Method for preparing semiconductor oxide catalyst with synergistic effect of light and heat
  • Method for preparing semiconductor oxide catalyst with synergistic effect of light and heat

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The method for preparing a semiconductor oxide catalyst with photothermal synergistic effect includes the following steps:

[0027] 1) Take TiO 2 , Ethanol as raw material, weigh 0.5g of TiO 2 Add the powder to 40mL ethanol, mix the two evenly to form TiO 2 The suspension;

[0028] 2) Will be loaded with TiO 2 Place the beaker of the suspension in an ultrasonic device for 2 hours of ultrasonic treatment; the frequency of the ultrasonic treatment is 80KHz, and the power is 500W;

[0029] 3) Then the TiO after ultrasound 2 The suspension is coated on the surface of the 125W ultraviolet lamp, and the coating process is carried out under the illumination of the infrared lamp; while using a dropper to drip the suspension on the surface of the lamp, it is dried; in the process of dripping, attention should be paid to ensure that TiO 2 Uniformly distributed on the surface of the suspension UV lamp;

[0030] 4) Finally will be coated with TiO 2 The UV lamp of the suspension is baked und...

Embodiment 2

[0043] The method for preparing a semiconductor oxide catalyst with photothermal synergistic effect includes the following steps:

[0044] 1) Take TiO 2 , Water as raw material, weigh 0.5g of TiO 2 Add the powder to 20mL of water, mix the two evenly to form TiO 2 The suspension;

[0045] 2) Will be loaded with TiO 2 Place the beaker of the suspension in an ultrasonic device for 2 hours of ultrasonic treatment; the frequency of the ultrasonic treatment is 80KHz, and the power is 500W;

[0046] 3) Then the TiO after ultrasound 2 The suspension liquid is coated on the surface of the 125W ultraviolet lamp, and the coating process is carried out under the illumination of the infrared lamp; while using a dropper to drip the suspension liquid on the surface of the lamp, it is dried; in the process of dripping, attention should be paid to ensure that TiO 2 The suspension is uniformly distributed on the surface of the self-ballasted high-pressure mercury lamp, and TiO 2 Loss of suspension;

[0...

Embodiment 3

[0050] The method for preparing a semiconductor oxide catalyst with photothermal synergistic effect includes the following steps:

[0051] 1) Take TiO 2 , The mixed solvent is the raw material, the mixed solvent is water and ethanol, and the volume ratio of water to ethanol is 1:1; weigh 0.5g of TiO 2 Add the powder to 20mL of mixed solvent, mix the two evenly to form TiO 2 The suspension;

[0052] 2) Will be loaded with TiO 2 Place the beaker of the suspension in an ultrasonic device for 2 hours of ultrasonic treatment; the frequency of the ultrasonic treatment is 80KHz, and the power is 500W;

[0053] 3) Then the TiO after ultrasound 2 The suspension liquid is coated on the surface of the 125W ultraviolet lamp, and the coating process is carried out under the illumination of the infrared lamp; while using a dropper to drip the suspension liquid on the surface of the lamp, it is dried; in the process of dripping, attention should be paid to ensure that TiO 2 The suspension is uniform...

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Abstract

The invention relates to a method for preparing a semiconductor oxide catalyst which can degrade gas-phase volatile organic compounds. The method for preparing the semiconductor oxide catalyst with a synergistic effect of light and heat is characterized by comprising the following steps of: 1) selecting a semiconductor oxide and a solvent in a certain proportion of 0.1 to 1g: 10 to 40 ml, adding the semiconductor oxide into the solvent, and uniformly mixing the semiconductor oxide with the solvent to obtain a suspension of the semiconductor oxide; 2) placing a beaker which contains the suspension of the semiconductor oxide in an ultrasonic device, and performing ultrasonic treatment on the suspension for 1 to 2 hours; 3) coating the suspension on the surface of an ultraviolet lamp under the illumination of an infrared lamp; and 4) drying the surface of the ultraviolet light under the infrared lamp to obtain the semiconductor oxide catalyst with the synergistic effect of light and heat. The preparation method has the advantages of easily obtained raw materials, simple process and easy industrialization; and the semiconductor oxide catalyst prepared by the method can effectively degrade gas-phase volatile organic pollutants such as benzene, methyl benzene, methyl aldehyde, methyl alcohol, acetone and the like, and has excellent catalytic stability.

Description

Technical field [0001] The invention relates to a preparation method of a semiconductor oxide catalyst capable of degrading gas phase volatile organic pollutants. Background technique [0002] At present, the treatment of volatile organic compounds has become a hot spot in the field of environmental protection. They not only have great harm to human health, but also cause serious environmental pollution problems. Among all kinds of volatile organic pollutants, benzene has become the focus of research due to its carcinogenic and difficult-to-degrade characteristics. At the same time, benzene is also one of the most common organic pollutants in air pollution. Therefore, the development of an efficient and stable catalyst for the degradation of gas phase volatile organic compounds (such as benzene) has always been a difficult point in environmental governance. [0003] In the past few decades, people have studied a large number of treatment solutions, from the past adsorption method,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J37/34B01J21/06B01J23/10B01J23/06B01J23/72B01J23/18B01J23/745B01J23/22A62D3/38A62D101/20A62D101/28
Inventor 李远志彭涛周曦孙谦赵修建
Owner WUHAN UNIV OF TECH
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