Preparation method of monodisperse smooth surface amorphous titania nanospheres

Abstract

The invention discloses a preparation method for a monodisperse smooth surface amorphous titanium dioxide nanosphere. By adopting a solution process, the method comprises the steps of: firstly dissolving titanium nitride powder in water and conducting stirring to obtain a titanium nitride aqueous solution, then adding hydrogen peroxide and ammonia water into the titanium nitride aqueous solution in order, and performing stirring for at least 1h, thus obtaining a precursor solution; then, mixing the precursor solution with ethanol and conducting stirring to obtain a microemulsion solution, then heating the microemulsion solution at 60-80DEG C for at least 12h to obtain a white precipitate; and then, firstly using ethanol to washing the white precipitate, and then drying the precipitate at 55-65DEG C for at least 24h, thus obtaining the monodisperse smooth surface amorphous titanium dioxide nanosphere with a diameter of 150-800nm. The method provided by the invention is a microemulsion solution method without the need of using any template as a structure-directing agent, has the advantages of mild synthesis conditions, no toxicity, no pollution and low price, belongs to a green and environment friendly low temperature synthesis method, and is very conducive to industrial production and commercial application of the prepared target product.

Description

technical field

[0001] The invention relates to a method for preparing titanium dioxide nanospheres, in particular to a method for preparing monodisperse and smooth surface amorphous titanium dioxide nanospheres. Background technique

[0002] Titanium dioxide is a wide-bandgap semiconductor material widely used. It has good stability, is non-toxic to the human body, and has moisture sensitivity, pressure sensitivity and gas sensitivity, as well as good photocatalytic and photoelectric conversion properties. It is widely used in sensors, photocatalysts , electronic materials, paint coatings and other chemical raw materials and other fields, and it is expected that the use of solar energy will show broad application prospects in organic synthesis, photolysis of water and environmental governance. At present, people have made unremitting efforts to obtain nano titanium dioxide materials, such as a "preparation method of titanium dioxide nanometer mesoporous spheres" disclosed i...

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