Method for preparing monodisperse titanium dioxide (B) nano particles

A technology of titanium dioxide and nano-particles, applied in the direction of titanium dioxide, titanium oxide/hydroxide, nanotechnology, etc., can solve the problems that have not been reported in relevant literature, reduce post-processing costs, simple and easy process, and low reaction temperature Effect

Active Publication Date: 2015-01-28
吉林省润臻分离技术有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

For monodisperse TiO below 5nm 2 The preparation of -B nanoparticles has not been reported in the relevant literature

Method used

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  • Method for preparing monodisperse titanium dioxide (B) nano particles
  • Method for preparing monodisperse titanium dioxide (B) nano particles
  • Method for preparing monodisperse titanium dioxide (B) nano particles

Examples

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Embodiment 1

[0028] In a 250ml round bottom flask, add 50ml of ethylene glycol, add 2ml of titanium tetrachloride under nitrogen protection, heat up to 200°C, add 3ml of deionized water, reflux for 2 minutes, and use the product (transparent solution) after reflux reaction The reaction was quickly stopped by cooling in a cold water bath, and acetone 3 times the volume of the reaction system was added dropwise with stirring, then the stirring was stopped, and the mixture was allowed to settle for 10 minutes. The resulting product was washed, centrifuged and dried.

[0029] This embodiment is the best embodiment. Figure 1 ~ Figure 3 The TiO obtained in this embodiment is given respectively 2 - X-ray diffraction spectrum, transmission electron microscope pictures, and high-resolution transmission electron microscope pictures of B nanoparticles. The obtained product is monodisperse monoclinic phase titanium dioxide nanoparticles with a particle diameter of 2-5 nm.

Embodiment 2

[0031] In a 250ml round bottom flask, add 50ml of ethylene glycol, add 2ml of titanium tetrachloride under the protection of nitrogen, raise the temperature to 160°C under the protection of nitrogen, add 3ml of deionized water, reflux for 2 minutes, and reflux the product after reaction (Transparent solution) Stop the reaction by cooling in a cold water bath, dropwise add acetone 3 times the volume of the reaction system under stirring, stop stirring, and settle for 10 minutes. The resulting product was washed, centrifuged and dried.

[0032] Compared with Example 1, in this example, the reaction temperature is changed to 160° C., and the resulting product is monodisperse monoclinic titanium dioxide nanoparticles, Figure 4 The transmission electron micrograph of the product prepared in this embodiment is given, Figure 5 According to its X-ray diffraction spectrum, the morphology has no obvious change.

Embodiment 3

[0034] In a 250ml round bottom flask, add 50ml of ethylene glycol, add 2ml of titanium tetrachloride under nitrogen protection, heat up to 200°C, add 3ml of deionized water, reflux for 7 minutes, and use the product (transparent solution) after reflux reaction Cool in a cold water bath to stop the reaction, add dropwise acetone 3 times the volume of the reaction system under stirring, stop stirring, and settle for 10 minutes. The resulting product was washed, centrifuged and dried.

[0035] Compared with Example 1, the present embodiment changes the reaction time into 7 minutes, and the resulting product is monodisperse monoclinic titanium dioxide nanoparticles, Figure 6 The transmission electron micrograph of the product prepared in this embodiment is given, Figure 7 According to its X-ray diffraction spectrum, the morphology has no obvious change.

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Abstract

The invention provides a method for preparing monodisperse titanium dioxide (B) nano particles, belonging to the technical field of preparation of inorganic materials. The method comprises the steps of by taking polyhydric alcohols as solvents, adding titanium tetrachloride under the protection of nitrogen, mixing uniformly through stirring, heating up to 160-200DEG C, then adding deionized water, reflux reacting for 2-7 minutes, cooling by a cold bath to stop the reaction, dripping acetone, stirring and precipitating, and washing, centrifuging and drying the obtained white precipitate. The method is simple to operate, saves complicated steps of traditional high temperature heating and burning, has short reaction time, and can prepare the target product without surfactants and guiding agents; and the prepared monodisperse TiO2-B nano particles have the grain size less than 5nm, and can be used in fields like lithium ion batteries, catalysis and so on.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic materials, in particular to a method for simply preparing monodisperse titanium dioxide (B) nanoparticles, Background technique [0002] TiO 2 Nanomaterials have important applications in the fields of environmental purification, semiconductor devices, and gas sensors. In recent years, with the intensification of the energy crisis, energy storage batteries have attracted more and more attention. TiO 2 As electrode materials for lithium-ion batteries, nanomaterials have the advantages of high safety and stable cycle performance compared with graphite. At the same time, titanium resources are abundant and cheap. These advantages make them a promising electrode material for lithium-ion batteries. Titanium dioxide (B) (TiO 2 -B) has a unique structure, which also shows excellent performance in photocatalysis and solar cells. Wang Xun and others reported the preparation of atomical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B82Y30/00
CPCB82Y30/00C01G23/053C01P2004/64
Inventor 庞广生李璐焦世惠
Owner 吉林省润臻分离技术有限公司
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