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Anatase type nanometer titanium dioxide, and preparation method and use thereof

A nano-titanium dioxide, anatase-type technology is applied in the field of photocatalytic materials, which can solve the problems of inability to meet the requirements of excellent photocatalytic materials, poor activity and photocatalytic performance, inhibit the growth of crystal nuclei, and the preparation method is simple and feasible. The effect of omitting the sintering step

Inactive Publication Date: 2019-01-11
ASIA PAINT SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The titanium dioxide colloidal particles have good dispersibility, uniform size and good storage performance, but the titanium dioxide sol prepared by the method includes anatase titanium dioxide and rutile titanium dioxide, and the activity and photocatalytic performance of rutile titanium dioxide are poor, so the prepared Materials cannot meet the requirements of excellent photocatalytic materials

Method used

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  • Anatase type nanometer titanium dioxide, and preparation method and use thereof
  • Anatase type nanometer titanium dioxide, and preparation method and use thereof
  • Anatase type nanometer titanium dioxide, and preparation method and use thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0056] A kind of preparation method of anatase type nano-titanium dioxide comprises the steps:

[0057] (1) TiCl 4 Dispersed in ethanol to prepare the precursor, in which TiCl 4 The molar ratio with ethanol is 1:5;

[0058] (2) Raise the precursor to 150°C at a heating rate of 8°C / min, and perform solvothermal treatment for 2 hours to prepare a material system containing titanium dioxide;

[0059] (3) The material system containing titanium dioxide is washed with ethanol, centrifuged at a speed of 10000r / min for 10min and dried at 60°C for 3h to obtain anatase nano-titanium dioxide. figure 1 It is the XRD characterization spectrum of the anatase nano-titanium dioxide. It can be seen from the figure that the characteristic peak of titanium dioxide is sharp and has no miscellaneous peaks, indicating that the crystallization is relatively pure anatase-type nano-titanium dioxide. figure 2 with image 3 For the TEM characterization collection of described anatase nano-titanium...

Embodiment 2

[0061] The difference with Example 1 is that in step (1) TiCl 4 The molar ratio with ethanol is 1:1, and the anatase nano-titanium dioxide is prepared.

Embodiment 3

[0063] The difference with Example 1 is that in step (1) TiCl 4 The molar ratio of ethanol to ethanol is 1:20 to prepare anatase nano-titanium dioxide.

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Abstract

The invention relates to an anatase type nanometer titanium dioxide, and a preparation method f and a use thereof. The preparation method of the nanometer titanium dioxide comprises the following steps: (1) preparing a precursor containing titanium halide; and (2) heating the precursor in a closed environment to carry out solvothermal treatment in order to obtain the anatase type nanometer titanium dioxide. The anatase type nanometer titanium dioxide has a purity of 99.9% or above, a particle diameter of 20 nm or less and a distribution coefficient of 0.5 or less, and has an absorption effecton ultraviolet lights. The pure anatase type nanometer titanium dioxide product with a controllable particle size is prepared through a one-step solvothermal technology without calcination, so the method has the advantages of low energy consumption, simple process, and rapidness in industrial production.

Description

technical field [0001] The invention belongs to the technical field of photocatalytic materials, and in particular relates to an anatase-type nano-titanium dioxide, a preparation method and application thereof, and the anatase-type nano-titanium dioxide is used for anti-ultraviolet rays in photocatalysts, catalyst carriers, cosmetics and textiles agent, silicone rubber heat stabilizer and other fields. Background technique [0002] People's higher pursuit of a comfortable and healthy living environment has prompted scientific and technological workers to accelerate the development of nano-photocatalyst products that can degrade formaldehyde, benzene and other organic pollutants in the indoor and car air and remove odors. Nano-titanium dioxide material is a functional nanomaterial that has developed rapidly in recent years. In addition to the unique surface effect, small size effect, quantum effect and macroscopic quantum tunneling effect of nanomaterials, it has been confirm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053B82Y40/00
CPCB82Y40/00C01G23/0536C01P2002/72C01P2004/04C01P2004/51C01P2004/64C01P2006/80
Inventor 盖德成王沛远陈越李金钟
Owner ASIA PAINT SHANGHAI
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