Monodisperse, porous crystalline titanium oxide nanospheres with size less than 100 nm and preparation method thereof

A monodisperse and titanium oxide technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology, etc., can solve the problem that it is difficult to prepare small-sized monodisperse porous titanium oxide nanosphere materials, and achieve good cycle stability High performance, convenient operation and simple process

Active Publication Date: 2018-10-16
FUDAN UNIV
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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

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  • Monodisperse, porous crystalline titanium oxide nanospheres with size less than 100 nm and preparation method thereof
  • Monodisperse, porous crystalline titanium oxide nanospheres with size less than 100 nm and preparation method thereof
  • Monodisperse, porous crystalline titanium oxide nanospheres with size less than 100 nm and preparation method thereof

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Effect test

Embodiment 1

[0031]Dissolve 1.6 g of Pluronic F127 and 0.8 g of n-dodecylamine in 150 ml of ethanol, add 15 ml 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 12000 rpm for 10 minutes to separate the white gel precipitate, then washed with ethanol three times, and then washed with water three times, and the obtained white precipitate was dried in air at 60°C for 12 hours, Dispersed in 50 ml ethanol and 25 ml water mixed solvent, solvothermally treated at 150 °C for 12 hours, and then calcined at 500 °C for 4 hours, monodisperse porous titanium oxide nanospheres with a diameter of 40 nm can be obtained. Its shape and properties are shown in figure 1 , Figure 3-Figure 8 shown. The prepared titanium oxide nanomaterial has a spherica...

Embodiment 2

[0033] Dissolve 1.6 g of Pluronic F127 and 0.8 g of n-dodecylamine in 150 ml of ethanol, add 10 ml 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 for 10 minutes at 12,000 rpm to separate the white gel, then wash it with ethanol three times, and then wash it with water three times, dry the white precipitate in the air at 60°C for 12 hours, and then disperse After solvothermal 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, monodisperse porous titanium oxide nanospheres with a diameter of 90 nm can be obtained.

Embodiment 3

[0035] Dissolve 1.6 g of Pluronic F127 and 0.8 g of n-dodecylamine in 150 ml of isopropanol, add 15 ml of deionized water after dissolving, stir for half an hour, slowly introduce 0.8 g of tetrabutyl titanate into the above solution, and stir for 1 hour , let stand for 12 hours. Centrifuge the white gel precipitate formed in the solution for 10 minutes at 12,000 rpm to separate the white gel, then wash it with ethanol three times, and then wash it with water three times, dry the white precipitate in the air at 60°C for 12 hours, and then disperse After solvothermal 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, monodisperse porous titanium oxide nanospheres with a diameter of about 40 nm 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 invention belongs to the technical field of material preparation, and in particular relates to a titanium oxide nanosphere material with a size of less than 100 nm and a porous crystal structure and a preparation method thereof. Background technique [0002] Due to its special physical and chemical properties, porous titanium oxide nanomaterials have been widely used in many fields, including chemical industry, electronics industry, environmental protection, cosmetics industry, and medical science. The preparation and application of porous titanium oxide nanomaterials It has also been paid more and more attention by researchers. 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 monodisp...

Claims

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Application Information

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Patent Type & Authority Patents(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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