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Polyacid- titanium dioxide composite material for photocatalysis degradation of organic pollutants and preparation method thereof

A technology of organic pollutants and titanium dioxide, applied in the direction of catalyst activation/preparation, chemical instruments and methods, chemical/physical processes, etc., to achieve the effects of high photocatalytic efficiency, simple operation, and easy separation and recovery

Inactive Publication Date: 2004-06-16
NORTHEAST NORMAL UNIVERSITY
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

Poly acid titanate compound with specific properties made up from different elements makes them ideal materials for use in making photoactive compositions like TiO2. These special types have been found effective at decomposing certain chemicals present on contaminated surfaces such as peses or bacteria. They work well even when there're no harmful particles attached themselves. Additionally they make cleanup easier by easily separating and reusing these components over multiple months without losing their effectiveness. Overall, this method provides an efficient way to treat environmental issues caused by managing unsustainable wastewater resources effectively while reducing costs associated with traditional methods involving burning fossil fuels.

Problems solved by technology

Technological Problem: Current commercially available photoactive compounds used as photosensitisers cannot effectively degrade certain contaminating organics due to their poor stability during storage at room temperature. Additionally, they require expensive UV ray sources like laser lights, making them less accessible than desired for many industries where environmental regulations may apply.

Method used

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preparation example Construction

[0009] POM / TiO 2 Preparation of composite membrane: Dissolve POM in water at room temperature, in another container, mix ethanol with titanium tetramethoxide and mix with 4mol / l HNO 3 The pH value is adjusted between 2 and 3, wherein the stoichiometric ratio of POM, tetramethoxytitanium, ethanol and water is 0.3:700:1000:1150. The acidified mixture was added to the POM aqueous solution and stirred vigorously for 60 min, at which time a transparent POM / TiO 2 Sol. Immerse a clean quartz substrate into the above POM / TiO 2 Sol in the sol for 5 minutes, then put it on the suspension coater for 10 minutes, and blow dry with nitrogen. Finally, bake the quartz substrate at 150°C for 2 hours in a vacuum to form transparent POM / TiO2 on the surface of the quartz substrate. 2 Composite film.

[0010] The general process of photocatalytic degradation of organic pollutants in water by multi-acid-titanium dioxide composite photocatalytic materials is as follows: the photocatalyst is sus...

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Abstract

A novel polyacid - titanium oxide composite prepared by sol-gel, mould plate and suspension coating techniques, including three-dimensional ordered big aperture polyacid - titanium oxide powder and polyacid - titanium oxide composite membrane, wherein titanium oxide is used as a carrying agent, the selected polyacid is the 1, 2, and 3 omission Keggin anion. This type of photocatalysis material processes the advantages of water resistance, high-performance, low cost, easy reclamation and long life.

Description

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Claims

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Application Information

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Owner NORTHEAST NORMAL UNIVERSITY
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