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Preparation method of TiO2 microspheres with special hollow structure

A technology of hollow structure and microspheres, applied in the direction of nanotechnology, titanium oxide/hydroxide, titanium dioxide, etc., can solve the problems of damage, high cost, environmental pollution microsphere structure, etc., and achieve simple process, high yield, and reliable strong control effect

Pending Publication Date: 2021-12-10
HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The template method is the most effective and versatile method for preparing micron / nano-scale inorganic hollow microspheres. Many researchers use the template method to prepare hollow microspheres. The prepared hollow microspheres have uniform particle size distribution, uniform hollow size, and simple mechanism. However, the addition of templates will inevitably introduce impurity phases, resulting in high cost, environmental pollution, and the subsequent removal process will destroy the microsphere structure to a certain extent.

Method used

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  • Preparation method of TiO2 microspheres with special hollow structure
  • Preparation method of TiO2 microspheres with special hollow structure
  • Preparation method of TiO2 microspheres with special hollow structure

Examples

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Effect test

Embodiment 1

[0019] After mixing 10mL of acetylacetone and 40mL of diethyl ether, add 2mL of tetra-n-butyl titanate, stir evenly, add it to the reaction kettle, react with solvent heat at 200°C for 12h, cool naturally, centrifuge, wash and dry to obtain special TiO with hollow structure 2 Microspheres, 1-3 μm in diameter.

Embodiment 2

[0021] After mixing 15mL of acetylacetone and 35mL of diethyl ether, add 2mL of tetra-n-butyl titanate, stir evenly, add it to the reaction kettle, and conduct a solvothermal reaction at 180°C for 15h. After natural cooling, centrifuge, wash and dry to obtain special TiO with hollow structure 2 Microspheres, 1-3 μm in diameter.

Embodiment 3

[0023] After mixing 20mL of acetylacetone and 30mL of diethyl ether, add 2mL of tetra-n-butyl titanate, stir evenly, add it into the reaction kettle, and conduct a solvothermal reaction at 220°C for 10 hours. After natural cooling, centrifuge, wash and dry to obtain special TiO with hollow structure 2 Microspheres, 1-3 μm in diameter.

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Abstract

The invention discloses a preparation method of TiO2 microspheres with a special hollow structure. The method comprises the following steps: uniformly mixing a titanium source and an organic solvent, and carrying out solvothermal reaction at 180-220 DEG C for 10-15 hours to obtain the TiO2 microspheres with the special hollow structure, wherein the organic solvent is composed of acetylacetone and diethyl ether according to the volume ratio of 1: (1.5-4). The method provided by the invention has the advantages of mild reaction conditions, simple process, strong controllability, high yield and good reproducibility, is simple to operate, has no template and no post-treatment, can be used for rapidly synthesizing a large amount of TiO2 hollow structure microspheres with special hollow structures under the condition of lower temperature, and the synthesized TiO2 microspheres have potential application prospects in the fields of solar cells, lithium ion batteries, photocatalysis and the like.

Description

technical field [0001] The invention relates to the technical field of preparation of inorganic nanomaterials, in particular to a TiO with a special hollow structure 2 Preparation method of microspheres. Background technique [0002] Hollow microsphere materials are a kind of micro-nano materials with a hollow structure inside. Compared with solid nanoparticles, they have the characteristics of mesoporous structure, large specific surface area, low specific gravity, and light scattering effect. They are used in catalysis, biomedicine, pigments, photons Crystals, supercapacitors, lithium-ion batteries, solar cells, gas sensors, sewage treatment, photodetectors and other fields have important application prospects. For example, nano-catalysts with hollow structures can effectively increase the active sites in catalytic reactions; by changing the composition, shape, size, shell thickness, porosity, pore position and characteristics of the inner wall of the nano-mesoporous holl...

Claims

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Application Information

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IPC IPC(8): C01G23/053B82Y40/00
CPCC01G23/053B82Y40/00C01P2004/34C01P2004/45C01P2004/61C01P2004/64
Inventor 李兆乾胡林华
Owner HEFEI INSTITUTES OF PHYSICAL SCIENCE - CHINESE ACAD OF SCI
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