Preparation method of amorphous tantalum oxide nanospheres

Abstract

The invention discloses an amorphous tantalum oxide nanosphere and a preparation method thereof. The method comprises the following steps: adding oxalic acid into an ethanol solution of tantalum chloride, uniformly stirring, transferring into a high-pressure reaction kettle, and carrying out alcohol thermal reaction to obtain the amorphous tantalum oxide nanospheres. According to the invention, the diameter of the amorphous cerium oxide nanosphere obtained by the method is about 400-500 nm, the particle size is uniform, and the dispersity is good; and compared with commercial tantalum oxide, the surface area of the amorphous tantalum oxide nanosphere is obviously increased, and more adsorption sites are provided for dye molecules, so that the improvement of adsorption and photocatalytic performance is promoted.

Description

technical field

[0001] The invention belongs to the field of nanometer materials, and relates to an amorphous tantalum oxide nanosphere and a preparation method thereof. Background technique

[0002] In recent years, the application of photocatalytic degradation of organic molecules in water has received widespread attention. Since the photocatalytic reaction does not require additional energy, dyes can be decomposed by using solar energy. When the photocatalyst is excited by light, the electrons will jump from the valence band of the semiconductor to the conduction band, generating electron-hole pairs, and a series of reactions between the electrons and water or oxygen will generate hydroxyl radicals, and superoxide radicals have strong oxidation properties. It can decompose organic dye macromolecules into small inorganic molecules such as water and carbon dioxide.

[0003] Ta 2 o 5 As a semiconductor material with stable physical and chemical properties, it has received...

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