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Synthetic method of colorful TiO2 microsphere and application of colorful TiO2 microsphere

A synthesis method and technology of microspheres, applied in the direction of titanium oxide/hydroxide, titanium dioxide, etc.

Inactive Publication Date: 2015-12-16
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There have been some reports on the synthesis of colorful TiO2 microspheres, but isopropanol and acetylacetone were used as solvents and ethylenediamine to synthesize colorful TiO2 microspheres The material has not been reported yet

Method used

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  • Synthetic method of colorful TiO2 microsphere and application of colorful TiO2 microsphere
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  • Synthetic method of colorful TiO2 microsphere and application of colorful TiO2 microsphere

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Embodiment 1

[0031] Mix acetylacetone and isopropanol at a volume ratio of 1:4 to form a mixed solvent, add 1ml of ethylenediamine, stir evenly, add 2ml of tetra-n-butyl titanate, then fully stir and transfer the mixed solution to the reaction kettle, React at 200°C for 16 hours. After natural cooling, red TiO was obtained by centrifugation, washing and drying. 2 Microspheres ( figure 1 ), microspheres composed of nanosheets with a diameter of ~1250nm ( figure 2 ).

Embodiment 2

[0033] Mix acetylacetone and isopropanol at a volume ratio of 1:1 to form a mixed solvent, add 0.05, 0.10, 0.25, 0.50, 1.0 and 2.0ml of ethylenediamine, stir well, add 4ml of tetra-n-butyl titanate, and then fully The mixed solution was transferred to a reaction kettle with stirring, and reacted at 200° C. for 16 hours. After natural cooling, centrifuged, washed and dried colorful TiO 2 Microspheres ( image 3 ).

Embodiment 3

[0035] Due to the high content of dimethyl blue in the dye wastewater, it is easy to cause environmental pollution, so it was selected as the photocatalytic activity of the simulated pollutant under the irradiation of ultraviolet light. The resulting red TiO 2 Microspheres are used in photodegradation experiments to obtain absorption at different times and at different wavelengths ( Figure 4 ).

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Abstract

The invention discloses a synthetic method of a colorful TiO2 microsphere and an application of the colorful TiO2 microsphere and provides a method for preparing the colorful TiO2 microsphere under the action of ethanediamine and the application of the colorful TiO2 microsphere in the fields of photocatalysis and the like. According to an experiment, isopropyl alcohol and acetylacetone are mixed to form a mixed solvent, a certain amount of ethanediamine is added, after sufficient stirring, a titanium source is added, the mixture obtained after sufficient stirring once again is transferred to a reaction kettle, reacts at the temperature of 160-230 DEG C for 6-24 h and then is cooled naturally, and the colorful TiO2 microsphere is obtained through separation, washing and drying. The synthetic method has the characteristics of simple process, high yield, mild reaction conditions and the like.

Description

technical field [0001] The invention belongs to the preparation and application of inorganic nanometer materials. Background technique [0002] In recent years, nanomaterials have developed rapidly. Due to the characteristics of nanoparticles such as surface effects, quantum effects, small size effects, and macroscopic quantum tunneling effects, they exhibit significant differences from general macroscopic materials in terms of electricity, optics, mechanics, and magnetism. feature. [0003] Titanium dioxide is widely used in photocatalysis, solar cells, photolysis hydrogen production and other fields due to its advantages of non-toxicity, rich content, stability and photoactivity. There are four main crystal forms of titanium dioxide: anatase, rutile, brookite and metastable TiO 2 (B) phase. The rutile type is more stable and dense than the anatase type, and has higher hardness, density, dielectric constant and refractive index, and its hiding power and tinting power are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053
CPCC01G23/053C01P2004/03C01P2004/32C01P2004/61C01P2004/62
Inventor 戴松元丁勇胡林华张兵姚建曦
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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