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Anatase titanium dioxide microspheres and preparation method thereof

A titanium dioxide, anatase technology, applied in the direction of titanium dioxide, chemical instruments and methods, titanium oxide/hydroxide, etc., can solve the problems of complex semiconductor compounding steps and so on

Inactive Publication Date: 2018-09-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The compound steps of noble metal doping and semiconductor are more complicated

Method used

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  • Anatase titanium dioxide microspheres and preparation method thereof
  • Anatase titanium dioxide microspheres and preparation method thereof
  • Anatase titanium dioxide microspheres and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of green synthetic method of anatase type nano-titanium dioxide, comprises the following steps:

[0032] (1) Add 20mL of ethanol as a solvent in the reaction kettle, add 24μL of diethylenetriamine, then add 1mL of 1-butyl-3-methylimidazolium tetrafluoroborate, and then stir on a magnetic stirrer After stirring for 10-15 minutes, add 2 mL of titanium source isopropyl titanate while stirring, continue stirring for 5-10 minutes after the addition, and finally put it in an oven at 200° C. for 24 hours.

[0033] (2) After stopping the reaction, take out the reaction solution, centrifuge to obtain the precipitate, wash the precipitate three times with ethanol, then put the precipitate in a 70°C oven and dry it for 24 hours, then grind the dried sample into powder and put it into a horse In the Furnace, the temperature was raised to 600°C at a rate of 3°C / min, and then kept for 4 hours to obtain a titanium dioxide sample.

[0034] figure 1 and figure 2 TiO prepared ...

Embodiment 2

[0036] Anatase titanium dioxide microspheres were prepared by a method similar to that of Example 1, except that the amount of ethanol was 30 mL.

[0037] TiO prepared in this embodiment 2 The SEM picture is as follows image 3 As shown, the average particle size of visible microspheres is 2 μm, and the average particle size of nanoparticles is 18 nm.

Embodiment 3

[0039] Anatase titanium dioxide microspheres were prepared by a method similar to that of Example 1, except that the amount of ethanol was 35 mL.

[0040] TiO prepared in this embodiment 2 The SEM picture is as follows Figure 4 As shown, the average particle size of visible microspheres is 2 μm, and the average particle size of nanoparticles is 22 nm.

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Abstract

The invention relates to anatase titanium dioxide microspheres and a preparation method thereof. The anatase titanium dioxide microspheres have a uniform grain diameter and the average grain diameteris 1 to 2mu m; the microspheres are formed through assembling nanoparticles with the average grain diameter of 10 to 25nm and the grain diameter of the nanoparticles is adjustable. The preparation method of the anatase titanium dioxide microspheres comprises the following steps: taking isopropyl titanate as a silicon source, ethanol as a solvent, diethylenetriamine as an end capping agent and fluorine-ion-containing liquid and ethanol as a morphology regulation agent, and carrying out solvothermal reaction to obtain TiO2 microspheres; drying, grinding and calcining the TiO2 microspheres to obtain the anatase titanium dioxide microspheres. According to the anatase titanium dioxide microspheres provided by the invention, the ethanol is used as the solvent, and the ethanol and the fluorine-ion-containing liquid are commonly used as the morphology regulation agent; anatase titanium dioxide nanoparticles with a high energy surface are obtained through the solvothermal reaction and the morphology can be controlled through adjusting the dosage of the ethanol.

Description

technical field [0001] The invention belongs to the technical field of nanometer materials, and in particular relates to an anatase titanium dioxide microsphere and a preparation method thereof. Background technique [0002] Energy crisis and environmental pollution are two major problems facing mankind today. Since 1972 Ti0 2 After the discovery of photocatalytic decomposition of water on the electrode to produce hydrogen, the application of photocatalytic technology in deep oxidation and degradation of various organic pollutants, reduction of toxic ions of heavy metals, antibacterial, antivirus, antibiotic, and energy conversion has gradually become a research hotspot. Currently, TiO 2 The photocatalytic technology based on photocatalysis has made great progress and extensive application research in the fields of dielectric effect, photochromism, gas sensitivity, humidity sensitivity, surface self-cleaning and environmental governance. [0003] As a semiconductor materi...

Claims

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Application Information

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IPC IPC(8): C01G23/053C01G23/08B01J21/06
CPCC01G23/053C01G23/08B01J21/063C01P2004/03C01P2002/80C01P2002/72C01P2004/61B01J35/23B01J35/39
Inventor 阳晓宇黎新肖洒王永郭定城肖冰玉钱心怡王雪琴王赫匡玥肖曼杰
Owner WUHAN UNIV OF TECH
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