A kind of preparation method of rare earth doped anatase titanium dioxide micro-nanosphere

Abstract

The invention discloses a preparation method of a rare earth doping anatase titanium dioxide micro-nano sphere. The preparation method comprises the steps of a, dispersing rare-earth metal oxide into pure water, and obtaining a water solution of rare-earth oxide, wherein the rare-earth oxide is yttrium oxide, ytterbium oxide and erbium oxide; b, dropwise adding a trifluoroacetic acid water solution into the water solution of the rare-earth oxide, and obtaining a mixed solution; c, dissolving titanyl sulfate powder into the mixed solution, and carrying out hydrothermal reaction at 150 to 200 DEG C for 12 to 24 hours; d, after finishing reaction, centrifugally washing the powder product, and freeze drying to obtain the rare earth doping anatase titanium dioxide micro-nano sphere. According to the preparation method of the rare earth doping anatase titanium dioxide micro-nano sphere provided by the invention, the titanyl sulfate is adopted as the raw material, and the rare earth doping anatase titanium dioxide micro-nano sphere can be synthesized directly by adopting hydrothermal reaction at low temperature, so that the preparation process is simple, a high-temperature calcining step is avoided, the requirement on equipment is low, and the preparation method is applicable to mass production; the prepared rare earth doping anatase titanium dioxide micro-nano sphere has the advantages of regular shape, high degree of crystallinity, high productivity and low cost.

Description

technical field [0001] The invention belongs to the technical field of inorganic nanometer materials, and in particular relates to a preparation method of rare earth-doped anatase titanium dioxide micro-nanospheres. Background technique [0002] Titanium dioxide is a common wide-bandgap semiconductor metal oxide, which has the advantages of stable chemical properties, non-toxicity and biocompatibility, and has shown attractive application prospects in many fields such as catalysis, electronics, environment, and medical treatment. As a photocatalyst, anatase titanium dioxide exhibits excellent organic pollutant degradation performance and potential photolysis of water to produce clean hydrogen energy performance, which has aroused great interest of researchers in the fields of chemistry, environment and energy. Different preparation methods will not only affect the size and morphology of titanium dioxide photocatalysts, but also have a great impact on its photocatalytic perfo...

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Problems solved by technology

The method uses titanium tetrachloride as raw material, which is highly corrosive and irritating, has a high risk factor, high cost, complicated operation steps, and is unfavorable for industrialized production.

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