Preparation method of titanium dioxide based self-cleaning glass

A titanium dioxide, self-cleaning technology, applied in the direction of titanium dioxide, titanium oxide/hydroxide, etc., can solve the problems of low coating efficiency, unsuitable for mass production, and film thickness that cannot meet the required photocatalytic effect, and meets equipment requirements. , good organic matter catalytic degradation activity, and the effect of flexible control of film thickness

Active Publication Date: 2018-01-19
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is not suitable for mass production, and at the same time, the coating efficiency of this method is low, and the film thickness cannot meet the required photocatalytic effect

Method used

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  • Preparation method of titanium dioxide based self-cleaning glass
  • Preparation method of titanium dioxide based self-cleaning glass
  • Preparation method of titanium dioxide based self-cleaning glass

Examples

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preparation example Construction

[0043] The preparation method of titanium dioxide-based self-cleaning glass provided by the invention comprises the following steps:

[0044] Titanium tetrachloride, concentrated ammonia water, hydrogen peroxide and glycolic acid were added to ice cubes in sequence, and magnetically stirred continuously to obtain a light yellow transparent solution; the titanium tetrachloride, concentrated ammonia water, hydrogen peroxide, ethanol The amount of acid used is titanium tetrachloride: concentrated ammonia water: hydrogen peroxide: glycolic acid = 1 ~ 2: 3 ~ 5: 11 ~ 15: 1; the resulting solution is placed in a constant temperature blast drying oven at 60-100 ℃ for 5-8 hours, the preferred temperature is 60-80℃, and the time is 5-6 hours; after taking it out, add distilled water, stir until it becomes a uniform and stable solution, add inorganic strong acid to adjust its pH to 0-3, and stir for 5 minutes. Place in a high-pressure reactor and heat to a reaction temperature of 130-180...

Embodiment 1

[0047] Using titanium tetrachloride, concentrated ammonia water, hydrogen peroxide, and glycolic acid as raw materials, add them to an appropriate amount of ice cubes in turn, and continue magnetic stirring to obtain a light yellow transparent solution, which is placed in a constant temperature blast drying box React at 80°C for 6 hours; take it out, add an appropriate amount of distilled water, stir until it becomes a uniform and stable solution, add inorganic strong acid to adjust its pH to 1, stir for 5 minutes, place it in a high-pressure reactor and heat it to a reaction temperature of 160°C for 1.5 hours The consumption of described titanium tetrachloride, strong ammonia water, hydrogen peroxide, glycolic acid is titanium tetrachloride by weight ratio: concentrated ammonia water: hydrogen peroxide: glycolic acid=2:3:13:1, after the reaction is cooled The obtained white precipitate was washed and centrifuged, and the obtained solid sample was ultrasonically dispersed in ab...

Embodiment 2

[0050] Using titanium tetrachloride, concentrated ammonia water, hydrogen peroxide, and glycolic acid as raw materials, add them to an appropriate amount of ice cubes in turn, and continue magnetic stirring to obtain a light yellow transparent solution, which is placed in a constant temperature blast drying box React at 60°C for 5 hours; take it out, add an appropriate amount of distilled water, stir until it becomes a uniform and stable solution, add inorganic strong acid to adjust its pH to 0, stir for 5 minutes, place it in a high-pressure reactor and heat it to a reaction temperature of 130°C for 1 hour The consumption of described titanium tetrachloride, strong ammonia water, hydrogen peroxide, glycolic acid is titanium tetrachloride by weight ratio: concentrated ammonia water: hydrogen peroxide: glycolic acid=1:5:11:1, after reaction cooling The obtained white precipitate was washed and centrifuged, and the obtained solid sample was ultrasonically dispersed in absolute et...

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Abstract

The invention relates to a preparation method of titanium dioxide based self-cleaning glass, aiming at solving the problems in the preparation process of the self-cleaning glass that because the technology is complex, the requirement for manpower and material resources is high and the coating efficiency is low, large-area popularization is hard to realize. According to the preparation method disclosed by the invention, a simple sol-gel method is adopted for preparing TiO2 (B) crystal phase containing nano particle sol with uniform size and relatively small grains, glass is dipped into the sol,then the glass is drawn out from the TiO2 sol at the speed of 0.5cm/s-1.0cm/s, and a sample is subjected to annealing treatment at the temperature of 300-600 DEG C, thus obtaining the TiO2 based self-cleaning glass with large area and uniform membrane. The TiO2 based self-cleaning glass disclosed by the invention has relatively good organic matter catalytic degradation activity, and is very suitable for being popularized in the fields of external glass walls of buildings, windshields of automobiles and the like. The method disclosed by the invention is low in requirement for equipment, greatly reduces the production cost and is high in production efficiency, and membrane thickness can be flexibly mastered. The prepared glass has relatively high transmittance and is suitable for being applied to daily production and life.

Description

technical field [0001] The invention relates to a preparation method, in particular to a preparation method of titanium dioxide-based self-cleaning glass. Background technique [0002] With the awareness of the harm of environmental degradation to human life and the improvement of environmental protection requirements, people have more and more urgent requirements for the use of green building materials that are environmentally friendly, use natural conditions to achieve automatic cleaning, and can beautify the environment. , and the emergence of self-cleaning glass just satisfies people's good wishes. Self-cleaning glass is a new type of environmentally friendly material with photocatalytic degradation, self-cleaning and decontamination properties loaded with titanium dioxide photocatalyst on the glass surface. It has broad application prospects in the construction industry. [0003] For the preparation of common titanium dioxide thin films, chemical vapor deposition is th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/25C01G23/053
Inventor 张昕彤马贺王长华于飞刘益春
Owner NORTHEAST NORMAL UNIVERSITY
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