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Preparation method of zinc oxide/titanium dioxide composite microsphere

A technology of titanium dioxide and composite microspheres, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical/physical processes, etc. Industrialized production, cumbersome preparation process and other problems, to achieve the effect of suitable for industrialized production, simple operation and high catalytic activity

Active Publication Date: 2019-01-01
ANQING NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Titanium dioxide (TiO 2 ), zinc oxide (ZnO) and other semiconductor materials have good catalytic properties, and have become research hotspots in recent years, but these semiconductor materials can only absorb ultraviolet light, thus limiting their practical application fields
However, the current preparation methods of titanium dioxide and zinc oxide composites still have a lot of defects, such as cumbersome preparation process, relatively high preparation cost, difficulty in large-scale industrial production, etc., which are not conducive to the popularization and application of semiconductor composite preparation technology

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  • Preparation method of zinc oxide/titanium dioxide composite microsphere

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Dissolve zinc nitrate, urea, and glucose in water at a mass ratio of 1:2.5:10, stir and disperse for 20 minutes and mix thoroughly to obtain a reaction mixture solution, and pour the obtained reaction mixture solution into a polytetrafluoroethylene-lined reaction kettle , the reaction mixture accounted for 60% of the volume of the reactor, reacted in an oven at 170°C for 4 hours, cooled to room temperature to obtain a black precipitate, washed the black precipitate with deionized water, filtered, and then dried at 80°C for 4 hours , to obtain carbon microspheres containing zinc ions; fully mix the carbon microspheres containing zinc ions, n-butyl titanate and absolute ethanol with a mass ratio of 1:1:50 to obtain a suspension, and then add to the suspension under stirring Slowly add the ethanol solution of 30% of the volume of the suspension into the solution, the ethanol solution is a solution that is fully mixed with absolute ethanol and deionized water at 1:1 (volume ...

Embodiment 2

[0024] Dissolve zinc acetate, urea, and glucose in water at a mass ratio of 1:5:2, stir and disperse for 30 minutes and mix thoroughly to obtain a reaction mixture solution, and pour the obtained reaction mixture solution into a polytetrafluoroethylene-lined reaction kettle , the reaction mixture accounted for 20% of the volume of the reactor, reacted in an oven at 130°C for 6 hours, cooled to room temperature to obtain a black precipitate, washed the black precipitate with deionized water, filtered, and then dried at 100°C for 2 hours , to obtain carbon microspheres containing zinc ions; fully mix the carbon microspheres containing zinc ions, n-butyl titanate and absolute ethanol with a mass ratio of 1:0.2:80 to obtain a suspension, and then add to the suspension under stirring Slowly add an ethanol solution with 10% of the volume of the suspension in a dropwise solution, the ethanol solution is a solution that is fully mixed with absolute ethanol and deionized water at 1:1 (v...

Embodiment 3

[0026] Dissolve zinc chloride, urea, and glucose in water at a mass ratio of 1:0.5:20, stir and disperse for 5 minutes and mix thoroughly to obtain a reaction mixture solution, and pour the obtained reaction mixture solution into a polytetrafluoroethylene-lined reactor In this method, the reaction mixture solution accounts for 80% of the volume of the reactor, reacted in an oven at 200°C for 2 hours, and obtained a black precipitate after cooling to room temperature, washed the black precipitate with deionized water, filtered, and then dried at 50°C for 6 hour to obtain carbon microspheres containing zinc ions; fully mix carbon microspheres containing zinc ions, n-butyl titanate and absolute ethanol with a mass ratio of 1:2:10 to obtain a suspension, and then suspend to Slowly add ethanol solution with 40% volume of the suspension into the solution dropwise. The ethanol solution is a solution that is fully mixed with absolute ethanol and deionized water at 1:1 (volume ratio) an...

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Abstract

The invention discloses a preparation method of a zinc oxide/titanium dioxide composite microsphere. The preparation method comprises the following steps of (1) dissolving zinc salt, urea and glucoseinto water, stirring and dispersing, and fully mixing, so as to obtain a reaction mixed solution; putting into a high-pressure kettle, reacting for 2 to 6h at the temperature of 130 to 200 DEG C, cooling to room temperature, obtaining black precipitate, washing by deionized water, filtering, and drying for 2 to 6h at the temperature of 50 to 100 DEG C, so as to obtain the zinc ion-containing carbon microsphere; (2) fully mixing the carbon microsphere, tetrabutyl titanate and anhydrous ethanol, so as to obtain a suspension solution; stirring, slowly dripping an ethanol solution into the suspension solution, and continuing to stir for 0.5 to 2h at the temperature of 40 to 80 DEG C after dripping is finished, so as to obtain a sol complex of zinc ion-containing carbon microsphere and titaniumdioxide; (3) drying the sol complex, and calcining for 2 to 10h at the temperature of 400 to 700 DEG C, so as to obtain the zinc oxide/titanium dioxide composite microsphere. The preparation method has the advantages that the operation is simple, and the preparation method is suitable for industrialized production.

Description

technical field [0001] The invention relates to the field of preparation of inorganic composite microspheres, in particular to a preparation method of zinc oxide / titanium dioxide composite microspheres. Background technique [0002] Titanium dioxide (TiO 2 ), zinc oxide (ZnO) and other semiconductor materials have good catalytic properties, and have become research hotspots in recent years, but these semiconductor materials can only absorb ultraviolet light, thus limiting their practical application fields. For this reason, people try to compound these semiconductor materials by using metal doping, compounding and other methods, so that the absorption wavelength range is red-shifted, thereby improving the application performance and range of these semiconductor materials. Therefore, researchers at home and abroad have conducted a lot of research on the preparation methods of titanium dioxide, zinc oxide and other composites. However, there are still many defects in the cur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/06B01J35/08
CPCB01J23/06B01J35/08
Inventor 徐志兵李静诚吴佳佳张鹏飞洪志铭
Owner ANQING NORMAL UNIV
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