Preparation method of efficient titanium-based photocatalyst

Abstract

The invention belongs to the field of photocatalysis, and particularly relates to a preparation method of a high-efficiency titanium-based photocatalyst, which comprises the following steps: step 1, sequentially putting a base material into distilled water and anhydrous ethanol for ultrasonic cleaning for 20-30min, and performing drying to obtain a clean base material; 2, adding polyvinyl alcoholinto distilled water, stirring the substances uniformly to obtain a polyvinyl alcohol solution, then dipping the base material into the polyvinyl alcohol solution, then taking base material out, and performing drying to obtain a polyvinyl alcohol film; 3, spraying nano titanium monoxide powder on the surface of the polyvinyl alcohol film, and then spraying n-butyl titanate on the surface to obtaina multi-film base material; and 4, putting the multi-film base material into a sintering kettle, and carrying out sealed sintering for 2-5h to obtain the titanium-based photocatalytic film. The method provided by the invention solves the problem of low electron yield of existing nano titanium dioxide, utilizes the oxygen deficiency of titanium monoxide to form a multi-titanium structure with n-butyl titanate converted titanium dioxide, enhances the activity of the surface titanium dioxide, and effectively improves the photocatalytic efficiency.

Description

technical field [0001] The invention belongs to the field of photocatalysis, and in particular relates to a preparation method of a high-efficiency titanium-based photocatalyst. Background technique [0002] Titanium dioxide (TiO 2 ) Because of its chemical inertness, good biocompatibility, strong oxidation ability and chemical corrosion resistance, and low price, it is widely used in energy conversion, wastewater treatment, environmental purification, sensors, coatings, cosmetics, catalysts, fillers, etc. Many fields have attracted great attention from scholars at home and abroad. Especially as an N-type semiconductor material with excellent performance, it can make full use of solar energy, which is energy-saving and environmentally friendly. It is a nano-functional material with the broadest application prospects. Although titanium dioxide is a potential photocatalyst, the wide bandgap (about 3.2eV for anatase and about 3.0eV for rutile) makes TiO 2 It can only be exci...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problems in the prior art, the present invention provides a preparation method of high-efficiency titanium-based photocatalyst, which solves the problem of low electron yield of existing nano-titanium dioxide, utilizes the oxygen deficiency of titanium monoxide, and n-butyl titanate The converted titanium dioxide forms a multi-titanium structure, which improves the activity of the surface titanium dioxide and effectively improves the photocatalytic efficiency

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