Preparation method of bismuth oxide halide-titanium oxide nanotube array composite photo-catalytic membrane

A technology of titanium oxide nanotubes and composite photocatalysis, applied in the field of photocatalysis, can solve the problems of low activity, easy agglomeration, difficult recycling, etc., achieve good photocatalytic performance, reduce interfacial tension, and facilitate wetting
CN103285891AInactive Publication Date: 2013-09-11HEBEI UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HEBEI UNIV OF TECH
Publication Date
2013-09-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of photo-catalysis, and in particular relates to a preparation method of a bismuth oxide halide-titanium oxide nanotube array composite photo-catalytic membrane. The method comprises the steps of: first, preparing a titanium dioxide nanotube array membrane by adopting an anode oxidization method; then, enabling bismuth ions to enter nanotubes by vacuum impregnation; and at last, with a solution containing halide ions as a precipitator, enabling the halide ions to react with the bismuth ions to generate bismuth oxide halide, wherein the bismuth oxide halide is deposited in the nanotubes and on the surface of the nanotube of the titanium dioxide nanotube array so as to obtain the bismuth oxide halide-titanium oxide nanotube array composite photo-catalytic membrane. The preparation method disclosed by the invention combines the advantages of the titanium dioxide nanotube array and the advantages of the bismuth oxide halide, is convenient to use, and can be used for preparing composite photo-catalytic membranes with different bismuth oxide halide load capacities by changing the concentration of bismuth ions, etc; and the prepared composite photo-catalytic membrane has good photo-catalysis performance, large adjustability and high controllability,.
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Description

Technical field:

[0001] The invention belongs to the field of photocatalysis, in particular to a method for preparing a photocatalysis thin film. Background technique:

[0002] Photocatalyst is a substance that does not change itself under the irradiation of light, but can promote chemical reactions. It is widely used in the degradation of pollutants, air purification, self-cleaning, antibacterial, deodorization, etc.

[0003] There are many types of photocatalysts, and the forms of photocatalysts mainly include powder and film. The advantage of powder is its large specific surface area, but its disadvantages are easy agglomeration and difficulty in recycling. The film is simple and convenient to use, which can overcome the disadvantages of powder.

[0004] Titanium oxide is a photocatalyst with stable properties, no toxic and side effects, and cheap and easy-to-obtain raw materials. The morphology of the photocatalyst has a great influence on its performance. Although the...

Claims

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