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A kind of preparation method of nanometer tio2 microsphere

A microsphere and nanotechnology, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of complex preparation process, high cost, and difficult control of product microscopic shape, and meet the technological conditions Easy to control, low cost, and cheap raw materials

Active Publication Date: 2018-07-10
BOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies of the prior art, the present invention proposes a nano-TiO 2 The preparation method of microspheres aims to solve the problems of complex preparation process, high cost and difficult control of product microscopic appearance

Method used

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  • A kind of preparation method of nanometer tio2 microsphere
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preparation example Construction

[0026] The present invention is a kind of nano TiO 2 Preparation method of microspheres with TiCl 4 As a raw material, nano-TiO was synthesized at one time by hydrothermal synthesis 2 Microspheres have the advantages of low raw material cost, simple process, and easy control of product shape.

[0027] The method steps are as follows:

[0028] (1) Under the conditions of ice-water bath and magnetic stirring, TiCl 4 The solution was slowly added dropwise into deionized water to prepare TiCl with a concentration of 0.2-1.5 mol / L 4 To the suspension, add 0.0-2.0% surfactant by mass, heat to 50-80°C under stirring condition, keep the temperature for 10-60 min, and continue stirring for 10 min;

[0029] (2) Take the TiCl obtained in step (1) 4 Put the suspension into the polytetrafluoroethylene lining of the stainless steel autoclave; the filling rate is 50-80%, seal it and put it in an oven; react at a constant temperature of 100-155°C for 0.5-10 hours and then cool naturally ...

Embodiment 1

[0037] A kind of nano TiO 2 The preparation method of microsphere, its step is as follows:

[0038] (1) Under the conditions of ice-water bath and magnetic stirring, TiCl 4 The solution was slowly added dropwise into deionized water to make TiCl with a concentration of 0.5mol / L 4 Suspension, heated to 80°C with stirring, kept at constant temperature for 10 minutes, and continued to stir for 10 minutes;

[0039] (2) Take the TiCl obtained in step (1) 4 The suspension was put into the polytetrafluoroethylene lining of the stainless steel autoclave; the filling rate was 60%, and it was sealed and put into an oven; after reacting at a constant temperature of 120°C for 6 h, it was naturally cooled to room temperature; Wash the precipitate repeatedly with water and ethanol, filter or centrifuge until no chloride ions are detected in the filtrate, and dry at 80°C.

[0040] Nano-TiO 2 The microspheres are rutile TiO 2 , the microsphere is composed of radial nanorods with a diame...

Embodiment 2

[0042] A kind of nano TiO 2 The preparation method of microsphere, its step is as follows:

[0043] (1) Under the conditions of ice-water bath and magnetic stirring, TiCl 4 The solution was slowly added dropwise into deionized water to make TiCl with a concentration of 1.5mol / L 4 To the suspension, add 1.0% by mass surfactant polyethylene glycol 4000, heat to 50°C under stirring, keep the temperature constant for 60 minutes, and continue stirring for 10 minutes;

[0044] (2) Take the TiCl obtained in step (1) 4The suspension was put into the polytetrafluoroethylene lining of the stainless steel autoclave; the filling rate was 80%, and it was sealed and placed in an oven; after reacting at a constant temperature of 155°C for 0.5 h, it was naturally cooled to room temperature; Wash the precipitate repeatedly with water and ethanol, filter or centrifuge until no chloride ions are detected in the filtrate, and dry at 120°C.

[0045] Nano-TiO 2 The microspheres are rutile TiO ...

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Abstract

The invention relates to a preparation method of nano TiO2 microspheres, belonging to the technical field of nanometer materials. The steps of the method are as follows: add the TiCl4 solution to deionized water to make a TiCl4 suspension, add a surfactant, keep the temperature at a constant temperature for a period of time after heating, and continue stirring; put it into the polytetrafluoroethylene lining of a stainless steel autoclave, Put it in an oven after sealing; cool to room temperature after constant temperature reaction; wash the precipitate repeatedly with distilled water and absolute ethanol, filter or centrifuge, and dry until no chloride ions are detected in the filtrate. The invention has the advantages of cheap raw materials and low cost, easy control of process conditions, and the ability to prepare nano TiO2 microspheres with different shapes as required, and is suitable for popularization and application.

Description

technical field [0001] The invention belongs to the technical field of nanomaterials, and in particular relates to a nano-TiO 2 Preparation method of microspheres. Background technique [0002] Due to the fine structure and high specific surface area of ​​TiO 2 Particles have special effects that conventional materials do not have, so they have a wide range of applications in the fields of catalysis, optics, magnetism, gas sensing, and biomedicine. Due to the point contact between the spherical particles, the material is not easy to agglomerate and is convenient for storage. Compared with particles of other shapes, spherical particles filled into composite materials are not easy to cause stress concentration, can improve their elastic and plastic deformation capabilities, and make the material easy to process. Therefore, the application research of spherical inorganic materials is favored by researchers at home and abroad. . [0003] Nano-TiO 2 Microspheres have a fine ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G23/047B82Y30/00B82Y40/00
Inventor 孙彤励建荣刘连利王莉丽吴朝凌代悦
Owner BOHAI UNIV
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