Method for preparing platinum/semiconductor oxide catalyst having photo-thermal synergistic effect

A photothermal synergy, semiconductor technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of expensive equipment and difficult to achieve large-scale industrialization, etc. It can improve the catalytic activity, accelerate the photothermal synergistic catalytic oxidation process, and facilitate industrialization.

Inactive Publication Date: 2010-10-13
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are also researches that have invented a plasma-driven photocatalytic system (B.Y.Lee, S.H.Park, S.C.Lee, M.Kang, S.J.Choung, Catal.Today, 2004, 93-95) as a light source instead of a traditional ultraviolet light source. , 769.), this method can effectivel

Method used

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  • Method for preparing platinum/semiconductor oxide catalyst having photo-thermal synergistic effect
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  • Method for preparing platinum/semiconductor oxide catalyst having photo-thermal synergistic effect

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Embodiment 1

[0038] A method for preparing a platinum / semiconductor oxide catalyst with photothermal synergistic effect, comprising the steps of:

[0039] 1) with TiO 2 , water as raw material, weigh 0.5g of TiO 2 Add the powder into 10mL water, mix the two evenly to get TiO 2 the suspension;

[0040] 2) will be filled with TiO 2 The beaker of the suspension was placed in a sonicator, sonicated for 2 hours to obtain a good TiO 2 suspension; the frequency of the ultrasonic treatment is 80KHz, and the power is 500W;

[0041] 3) Add 0.663mL of chloroplatinic acid aqueous solution to the above ultrasonically prepared TiO 2 In the suspension, stirred in the dark for 10min, then stirred in the light for 10min, to obtain chloroplatinic acid and TiO 2 suspension; the concentration of chloroplatinic acid aqueous solution is 0.0048mol / L;

[0042] 4) Then the above-mentioned chloroplatinic acid and TiO 2 The suspension is evenly coated on the surface of the 125W ultraviolet lamp, and the coat...

Embodiment 2

[0054] A method for preparing a platinum / semiconductor oxide catalyst with photothermal synergistic effect, comprising the steps of:

[0055] 1) with TiO 2 , water as raw material, weigh 0.5g of TiO 2 Add the powder into 10mL water, mix the two evenly to get TiO 2 the suspension;

[0056] 2) will be filled with TiO 2 The beaker of the suspension was placed in a sonicator, sonicated for 2 hours to obtain a good TiO 2 suspension; the frequency of the ultrasonic treatment is 80KHz, and the power is 500W;

[0057] 3) Add 3.319mL of chloroplatinic acid aqueous solution to the TiO 2 In the suspension, stirred in the dark for 10min, then stirred in the light for 10min, to obtain chloroplatinic acid and TiO 2 suspension; the concentration of chloroplatinic acid aqueous solution is 0.0048mol / L;

[0058] 4) Then the above-mentioned chloroplatinic acid and TiO 2 The suspension is evenly coated on the surface of the 125W ultraviolet lamp, and the coating process is carried out und...

Embodiment 3

[0071] A method for preparing a platinum / semiconductor oxide catalyst with photothermal synergistic effect, comprising the steps of:

[0072] 1) with TiO 2 , water as raw material, weigh 0.5g of TiO 2 Add the powder into 10mL water, mix the two evenly to get TiO 2 the suspension;

[0073] 2) will be filled with TiO 2 The beaker of the suspension was placed in a sonicator, sonicated for 2 hours to obtain a good TiO 2 suspension; the frequency of the ultrasonic treatment is 80KHz, and the power is 500W;

[0074] 3) Add 6.638mL of chloroplatinic acid aqueous solution to the above ultrasonically prepared TiO 2 In the suspension, stirred in the dark for 10min, then stirred in the light for 10min, to obtain chloroplatinic acid and TiO 2 suspension; the concentration of chloroplatinic acid aqueous solution is 0.0048mol / L;

[0075] 4) Then the above-mentioned chloroplatinic acid and TiO 2 The suspension is evenly coated on the surface of the 125W ultraviolet lamp, and the coat...

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Abstract

The invention relates to a method for preparing a catalyst capable of degrading gaseous phase volatile organic pollutant. The method for preparing a platinum/semiconductor oxide catalyst having a photo-thermal synergistic effect comprises the steps of: 1) adding the semiconductor oxide into a solvent, 2) performing the ultrasonic processing for 1 to 2 hours, 3) adding chloroplatinic acid aqueous solution into the suspension of the semiconductor oxide, stirring at dark place and then stirring under light, 4) coating on the surface of an UV lamp, 5) drying and 6) utilizing the luminous energy and thermal energy emitted by the UV lamp to steam for 2 to 5 h under the mixture steam of water and alcohol, in order to catalytically reduce the chloroplatinic acid into nanometer platinum grain through the luminous energy, opening a gaseous phase catalytic reactor, going on illuminating for 1 to 3 h and volatilizing the residual alcohol and water. The method for preparing the product has simple technique, is easily industrialized, and is capable of efficiently photo-thermal concerted catalyzing to degrade the gaseous phase volatile organic pollutant, with high catalytic stability.

Description

technical field [0001] The invention relates to a preparation method of a catalyst capable of degrading gas-phase volatile organic pollutants. Background technique [0002] At present, volatile organic compound gases (such as: formaldehyde, benzene, toluene, xylene, etc.) are the main components of indoor air pollutants and industrial air pollution (such as chemical, pharmaceutical, printing and dyeing, leather, etc.), which are harmful to human health. It is an important aspect that affects public environmental health and safety, and it is also the source of many occupational diseases. Therefore, the development of an efficient and stable catalyst for degrading gas-phase volatile organic pollutants has always been a difficult point in environmental governance. [0003] In the past few decades, a large number of treatment schemes have been studied, from the past adsorption method, biological method to the recent photocatalytic technology. Studies have proved that it is a ve...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01J23/42B01J23/63B01J23/648B01J23/644B01J23/60B01J23/62B01D53/86B01D53/72
Inventor 李远志黄济超孙威孙谦孔明赵修建
Owner WUHAN UNIV OF TECH
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