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Preparation method of rare earth doping photolysis catalyst

A rare earth doping and photocatalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, chemical/physical processes, etc., can solve the problems of low quantum yield, low photodegradation catalytic effect, etc., and achieve simple preparation process , Improve photodegradation activity, low cost effect

Inactive Publication Date: 2018-09-11
姚刚 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But TiO 2 It has a large forbidden band width Eg (3.2eV), which can only be carried out under ultraviolet light with a wavelength of λ2 It has a lower quantum yield and a lower photodegradation catalytic effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] 1. Preparation of titanium dioxide precursor

[0021] Take 50ml of deionized water in a round bottom flask, and slowly add an appropriate amount of tetrabutyl titanate dropwise under rapid stirring. And keep stirring for 30min and observe its color change until white foam flocs appear. Ultrasonic dispersion was performed for 30 minutes, and then placed under magnetic stirring and heated for 10 hours at a temperature of 80°C. Finally, pour it into a beaker and put it in a drying oven to dry for 120min at 100°C. Prepare TiO2 photocatalyst precursor.

[0022] 2. Preparation of strontium-doped photodegradation catalyst

[0023] Put the prepared TiO2 precursor into a beaker, stir it with a magnetic stirrer, and slowly add a strontium nitrate solution that is basically equal in volume to the powder. After stirring evenly, ultrasonically disperse for 60 minutes, and then place it in a water bath at 80°C for 10 hours until the water basically evaporates.

[0024] Dry the p...

Embodiment 2

[0027] 1. Preparation of titanium dioxide precursor

[0028] Take 50ml of deionized water in a round bottom flask, and slowly add an appropriate amount of tetrabutyl titanate dropwise under rapid stirring. And keep stirring for 30min and observe its color change until white foam flocs appear. Ultrasonic dispersion was performed for 30 minutes, and then placed under magnetic stirring and heated for 10 hours at a temperature of 80°C. Finally, pour it into a beaker and put it in a drying oven to dry for 120min at 100°C. Prepare TiO2 photocatalyst precursor.

[0029] 2. Preparation of strontium-doped photodegradation catalyst

[0030] Put the prepared TiO2 precursor into a beaker, stir with a magnetic stirrer, and slowly dropwise add yttrium nitrate solution that is basically equal in volume to the powder. After stirring evenly, ultrasonically disperse for 60 minutes, and then place it in a water bath at 80°C for 10 hours until the water basically evaporates.

[0031] Dry the...

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PUM

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Abstract

The invention discloses a preparation method of a rare earth doping photolysis catalyst. The method comprises the following steps of stirring and mixing tetrabutyl titanate and water until white foamfloccules occur; then, performing ultrasonic dispersion; performing heating reaction at the temperature of 70 to 90 DEG C; then, performing drying; under the stirring condition, slowly adding the samevolume of nitric acid rare earth solution; performing uniform stirring; then, performing ultrasonic dispersion; next, putting the materials at 70 to 90 DEG C for moisture evaporation; performing drying in a drying oven; performing roasting in a muffle furnace at 490 to 510 DEG C; obtaining the white powdery rare earth / TiO2 photocatalyst. The preparation process of the method is simple; the cost is low; TiO2 is doped into rare earth, the photolysis activity of the rare earth doping catalyst can be favorably improved, so that the absorption rate on the sunlight can be improved; the degradationrate is improved.

Description

technical field [0001] The invention relates to a preparation method of a catalyst, in particular to a synthesis method of a rare earth-doped photodegradation catalyst. Background technique [0002] In 1972, the famous chemist Fujishima described the "Honda Fujishima effect" for the first time, and published about TiO 2 The discussion of heterogeneous photocatalysis on the photolysis of water on the electrode is a new leap in the era of heterogeneous photocatalysis. With the continuous development of the global economy, people's demand for industry has increased, leading to serious environmental pollution and damage to the natural environment. The wastewater discharged from industrial production has caused the water to become smelly and deteriorated. The organic pollutants discharged contain harmful substances. Aquatic organisms have toxic by-products, which have a serious impact on people's daily life. Production is not concentrated and the reaction system is not complet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10
CPCB01J23/10B01J35/39
Inventor 姚刚
Owner 姚刚
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