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Preparation method of zinc oxide-titanium dioxide composite

A technology of titanium dioxide and composite materials, applied in the field of materials, can solve the problems of cumbersome mesoporous synthesis methods, expensive surfactants, and long synthesis cycles, and achieve the effects of improving photodegradation activity, increasing absorption rate, and low cost

Inactive Publication Date: 2017-11-10
张家港市六福新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the traditional mesoporous synthesis method is more cumbersome, the synthesis cycle is longer, and the traditional use of surfactants is also more expensive.

Method used

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Examples

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Effect test

preparation example Construction

[0018] The invention discloses a method for preparing a zinc oxide-titanium dioxide composite material, comprising:

[0019] (1) In the presence of acid, dissolve tetrabutyl titanate in absolute ethanol, stir magnetically for 10-15min, add diethanolamine dropwise, stir magnetically for 30-45min, add deionized water, and place in a water bath at 30-60°C Under the condition of magnetic stirring for 1~2h, obtain titanium dioxide sol;

[0020] (2) Add zinc oxide powder to the above titanium dioxide sol, stir magnetically for 10-30 minutes, and concentrate in a vacuum to obtain zinc oxide-titanium dioxide gel;

[0021] (3) Put the zinc oxide-titanium dioxide gel into a muffle furnace, calcinate at 500-800° C. for 2-5 hours, and cool to obtain a zinc oxide-titanium dioxide composite material.

[0022] In the above step (1), the acid is selected from one of dilute hydrochloric acid, dilute sulfuric acid, and dilute nitric acid, and the acid is used to adjust the pH to 2 to 10; the v...

Embodiment

[0026] 1. Preparation of zinc oxide powder

[0027] 1) prepare zinc chloride solution;

[0028] 2) Add ammonia water or ammonium bicarbonate dropwise at room temperature with stirring until the pH of the solution is 11, then add 0.5% PEG by weight of the solute, and finally transfer the prepared solution into the reactor;

[0029] 3) The material in the reaction kettle is subjected to hydrothermal treatment under airtight conditions, the treatment temperature is 180°C, and the time is 16 hours;

[0030] 4) The product is washed with deionized water and then dried to obtain zinc oxide powder.

[0031] 2. Preparation of titanium dioxide sol

[0032] Dissolve 50mL tetrabutyl titanate in absolute ethanol, add 5 drops of dilute hydrochloric acid dropwise to adjust the pH of the solution to 6, stir magnetically for 15min, add 15mL diethanolamine dropwise, stir magnetically for 30min, add 1mL deionized water, and Magnetic stirring was carried out under the condition of a water bat...

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PUM

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Abstract

The invention discloses a preparation method of a zinc oxide-titanium dioxide composite material, comprising: (1) in the presence of acid, dissolving tetrabutyl titanate in absolute ethanol, magnetically stirring for 10-15 minutes, and adding diethanolamine dropwise , magnetically stirred for 30-45min, added deionized water, and magnetically stirred for 1-2h in a water bath at 30-60°C to obtain a titanium dioxide sol; (2) adding zinc oxide powder to the above-mentioned titanium dioxide sol, magnetically stirred for 10-30min, Vacuum concentration to obtain zinc oxide-titanium dioxide gel; (3) put the above-mentioned zinc oxide-titanium dioxide gel into a muffle furnace, calcinate at 500-800°C for 2-5 hours, and cool to obtain zinc oxide-titanium dioxide composite material . The preparation process of the invention is simple and the cost is low, and the doping of the titanium dioxide in the titanium dioxide helps to improve the photodegradation activity of the composite material, thereby increasing the absorption rate of ultraviolet light.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a preparation method of a zinc oxide-titanium dioxide composite material. Background technique [0002] ZnO and TiO 2 As a photocatalyst, it has been widely used and studied, especially the improvement of its catalytic activity by preparing a mesoporous structure with a large specific surface has attracted a lot of attention. [0003] The mesoporous structure of the prepared metal oxides gives these oxide materials special properties. This porous structure greatly increases the surface area of ​​the metal oxide. The surface of these metal oxides is often the site of catalytic reactions, which significantly change the electrical, magnetic and optical properties of the material from pore to pore. Mesoporous silicon, aluminosilicates, aluminophosphates and related materials have been well prepared. However, synthesizing mesoporous structures of metal oxides is much more diffic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/053C01G9/02
CPCC01G23/053C01G9/02C01P2004/82
Inventor 陈伟
Owner 张家港市六福新材料科技有限公司
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