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Monodispersive porous crystal titanium oxide nanosphere with size smaller than 100 nm and preparation method thereof

A titanium oxide, monodisperse technology, applied in titanium dioxide, titanium oxide/hydroxide, nanotechnology, etc., can solve the problem of difficult to prepare small-sized monodisperse porous titanium oxide nanosphere materials, and achieve good cycle stability. The effect of stability, uniform particle size and easy availability of raw materials

Active Publication Date: 2016-07-27
FUDAN UNIV
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  • Abstract
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Problems solved by technology

The preparation methods of porous titanium oxide nanomaterials currently developed mainly include solvothermal synthesis, sol-gel method, microemulsion method, spray pyrolysis method, etc. It is usually difficult to prepare small-sized monodisperse porous titanium oxide nanosphere materials, and the preparation of monodisperse porous titanium oxide nanospheres with a diameter of less than 100 nm is still a great technical challenge

Method used

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  • Monodispersive porous crystal titanium oxide nanosphere with size smaller than 100 nm and preparation method thereof
  • Monodispersive porous crystal titanium oxide nanosphere with size smaller than 100 nm and preparation method thereof
  • Monodispersive porous crystal titanium oxide nanosphere with size smaller than 100 nm and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0031]Dissolve 1.6g of Pluronic F127 and 0.8g of n-dodecylamine in 150ml of ethanol, add 15ml of deionized water after dissolution, and then stir magnetically. After stirring for half an hour, 0.8 g of tetrabutyl titanate was slowly introduced into the above solution, and after stirring for 1 hour, it was left to stand for 12 hours. Centrifuge the white gel precipitate formed in the solution at 12000rpm for 10 minutes to separate the white gel precipitate, then wash it with ethanol three times, then wash it with water three times, dry the white precipitate in the air at 60°C for 12 hours, and then disperse Solvent heat treatment at 150° C. for 12 hours in 50 ml of ethanol and 25 ml of water mixed solvent, and then calcined at 500° C. for 4 hours to obtain monodisperse porous titanium oxide nanospheres with a diameter of 40 nm. Its shape and properties are shown in figure 1 , Figure 3-Figure 8 shown. The prepared titanium oxide nanomaterial has a spherical shape, and the di...

Embodiment 2

[0033] Dissolve 1.6g of Pluronic F127 and 0.8g of n-dodecylamine in 150ml of ethanol, add 10ml of deionized water after dissolution, and then stir magnetically. After stirring for half an hour, 0.8 g of tetrabutyl titanate was slowly introduced into the above solution, and after stirring for 1 hour, it was left to stand for 12 hours. The white gel precipitate formed in the solution was centrifuged at 12000rpm for 10 minutes to separate the white gel, then washed with ethanol three times, and then washed with water three times, and the obtained white precipitate was dried in the air at 60°C for 12 hours, and dispersed in Solvent heat treatment at 150°C for 12 hours in 50ml of ethanol and 25ml of water mixed solvent, and after calcination at 500°C for 4 hours, monodisperse porous titanium oxide nanospheres with a diameter of 90nm can be obtained.

Embodiment 3

[0035] Dissolve 1.6g of Pluronic F127 and 0.8g of n-dodecylamine in 150ml of isopropanol. After dissolving, add 15ml of deionized water. After stirring for half an hour, slowly introduce 0.8g of tetrabutyl titanate into the above solution. After stirring for 1 hour, statically Leave for 12 hours. The white gel precipitate formed in the solution was centrifuged at 12000rpm for 10 minutes to separate the white gel, then washed with ethanol three times, and then washed with water three times, and the obtained white precipitate was dried in the air at 60°C for 12 hours, and dispersed in Solvent heat treatment at 150°C for 12 hours in 50ml of ethanol and 25ml of water mixed solvent, and after calcination at 500°C for 4 hours, monodisperse porous titanium oxide nanospheres with a diameter of about 40nm can be obtained.

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Abstract

The invention belongs to the technical field of material preparation and particularly relates to a monodispersive porous crystal titanium oxide nanosphere with the size smaller than 100 nm and a preparation method thereof.According to the nanosphere, two types of surfactant and a self-assembly method with the assistance of three-block polymer and organic amine are adopted, mixed solvent of alcohol and water is utilized, a sol-gel mode with a titanium source dropwise added is adopted, and proper solvothermal synthesis and calination treatment are conducted, so that a titanium oxide nanosphere material is obtained, wherein the size of the titanium oxide nanosphere material is smaller than 100 nm; the material is monodispersive, adjustable in diameter, of a porous structure, high in specific surface area and large in pore volume.The monodispersive porous crystal titanium oxide nanosphere and the preparation method thereof have the advantages that operation is easy and convenient to conduct, repeatability is good, raw materials are easy to obtain, cost is low, and the nanosphere can be prepared on a large scale.

Description

Technical field [0001] The present invention is a material preparation technology field, which involves a single -divide -dispersing, porous crystal titanium oxide nano -ball material and its preparation methods with a size of less than 100nm. Background technique [0002] Point -porous titanium oxide nanomaterials have been widely used in many fields with their special physical and chemical properties, including chemical industry, electronics industry, environmental protection, cosmetics industry, and pharmaceutical science.It is also valued by more and more researchers.The preparation methods of porous titanium oxide nanomaterials developed now include solvents thermal synthesis, soluble gel method, micro -emulsion method, spray thermal solution, etc.It is usually difficult to prepare a small -sized single -porous titanium oxide nano -ball material. At present, it is still a big technical challenge to prepare a diameter of less than 100nm single -porous titanium oxide nano -nan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B82Y40/00
CPCC01G23/053C01P2002/01C01P2002/72C01P2002/82C01P2002/88C01P2004/03C01P2004/32C01P2004/64C01P2006/12C01P2006/14C01P2006/16C01P2006/40
Inventor 赵东元朱洪伟张凡靖云柯
Owner FUDAN UNIV
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