Method for preparing titanium dioxide hollow micro-sphere

A hollow microsphere, titanium dioxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of high cost, difficult to large-scale industrial production, complex preparation process, etc., and achieves short production cycle, reduced production cost, and synthetic simple method effect

Inactive Publication Date: 2009-10-21
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Looking at the above methods for preparing titanium dioxide hollow spheres, there are generally disadvantages such as complicated preparation process, high cost, and difficulty in large-scale industrial production.

Method used

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  • Method for preparing titanium dioxide hollow micro-sphere
  • Method for preparing titanium dioxide hollow micro-sphere
  • Method for preparing titanium dioxide hollow micro-sphere

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Put 10mL industrial titanium solution (manufactured by Guangzhou Titanium Dioxide Factory) into a 20mL autoclave lined with polytetrafluoroethylene, hydrothermally react at 140°C for 24h, and wash with distilled water and absolute ethanol in turn after cooling , After filtering, a white solid product was obtained, and the product was dried at 60° C. for 24 hours to obtain 1.18 g of titanium dioxide hollow microspheres. attached figure 1 Middle curve 1 is the X-ray diffraction pattern of the product obtained in this embodiment, as can be seen from the figure, the peak position of each diffraction peak is similar to that of anatase type TiO 2 The phases of the diffraction peaks on the standard card (JCPDS No.84-1286) are consistent, and no impurity peaks appear, indicating that the product is pure anatase structure TiO 2 . attached figure 2 It is the low-magnification SEM figure of the product obtained in this embodiment, from figure 2 It can be seen from the figure...

Embodiment 2

[0027] Put 10mL of industrial titanium liquid (manufactured by Guangzhou Titanium Dioxide Factory) into a 20mL autoclave lined with polytetrafluoroethylene, hydrothermally react at 180°C for 12h, and wash with distilled water and absolute ethanol in turn after cooling , After filtering, a white solid product was obtained, and the product was dried at 80° C. for 18 hours to obtain 1.20 g of titanium dioxide hollow microspheres. attached figure 1 Middle curve 2 is the X-ray diffraction figure of gained product, can find out from the figure, the peak position of each diffraction peak and anatase type TiO 2 The phases of the diffraction peaks on the standard card (JCPDS No.84-1286) are consistent, and no impurity peaks appear, indicating that the product is pure anatase structure TiO 2 .

Embodiment 3

[0029] Put 10mL of industrial titanium liquid into a 20mL autoclave lined with polytetrafluoroethylene, hydrothermally react at 220°C for 4 hours, wash with distilled water and absolute ethanol in turn after cooling, and obtain a white solid product after filtration. The product was dried at 100° C. for 12 hours to obtain 1.10 g of titanium dioxide hollow microspheres. attached figure 1 Middle curve 3 is the X-ray diffraction figure of obtained product, can find out from the figure, the peak position of each diffraction peak and anatase type TiO 2 The phases of the diffraction peaks on the standard card (JCPDS No.84-1286) are consistent, and no impurity peaks appear, indicating that the product is pure anatase structure TiO 2 .

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Abstract

The invention discloses a preparation method of titanium dioxide hollow microspheres. The method is to put industrial titanium liquid into an autoclave lined with polytetrafluoroethylene, conduct a hydrothermal reaction at 140-220°C for 4-24 hours, wash, filter and dry after cooling, and then obtain the nano-particle accumulation and The resulting titanium dioxide hollow microspheres have a particle size of 200-300 nm. The invention uses cheap industrial titanium liquid as a raw material, does not need to add other chemical reagents, and adopts hydrothermal method to synthesize titanium dioxide hollow microspheres.

Description

technical field [0001] The invention belongs to the preparation of inorganic nanometer powder materials, in particular to a method for preparing titanium dioxide hollow microspheres. Background technique [0002] Titanium dioxide is a widely used wide-bandgap semiconductor material. It is widely used in sensors and photocatalysts because of its good stability, non-toxicity to the human body, moisture sensitivity, pressure sensitivity, gas sensitivity, and good photocatalytic and photoelectric conversion properties. , electronic materials, paint materials and other chemical raw materials and other fields, and is expected to use solar energy to show broad application prospects in organic synthesis, photolysis of water, environmental governance and other fields. [0003] Because titanium dioxide hollow microspheres have low density, large specific surface area, and excellent optical and electrical properties, they have broad application prospects in the fields of high-efficienc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/053
Inventor 李秀艳吴明娒杨贤锋
Owner SUN YAT SEN UNIV
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