Preparation method of efficient titanium-based photocatalyst

A photocatalyst, titanium-based technology, applied in the field of photocatalysis, can solve the problem of low electron yield of nano-titanium dioxide, and achieve the effect of improving photocatalytic efficiency and activity

Inactive Publication Date: 2020-03-06
绍兴市梓昂新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 th

Method used

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  • Preparation method of efficient titanium-based photocatalyst

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Effect test

Embodiment 1

[0021] A preparation method of high-efficiency titanium-based photocatalyst, comprising the steps of:

[0022] Step 1, put the base material into distilled water and absolute ethanol in order to ultrasonically clean it for 20 minutes, and dry it to obtain a clean base material;

[0023] Step 2, adding polyvinyl alcohol into distilled water and stirring evenly to obtain a polyvinyl alcohol liquid, then immersing the base material in the polyvinyl alcohol liquid, taking it out and drying to obtain a polyvinyl alcohol film;

[0024] Step 3, spraying the nano-titanium monoxide powder on the surface of the polyvinyl alcohol film, and then spraying n-butyl titanate on the surface to obtain a multi-film substrate;

[0025] Step 4, put the multi-film substrate into a sintering kettle, seal and sinter for 2 hours to obtain a titanium-based photocatalytic film.

[0026] The ultrasonic cleaning frequency in step 1 is 50 kHz, the temperature is 40° C., and the drying temperature is 100° ...

Embodiment 2

[0032] A preparation method of high-efficiency titanium-based photocatalyst, comprising the steps of:

[0033] Step 1, put the base material into distilled water and absolute ethanol in order to ultrasonically clean it for 30 minutes, and then dry it to obtain a clean base material;

[0034] Step 2, adding polyvinyl alcohol into distilled water and stirring evenly to obtain a polyvinyl alcohol liquid, then immersing the base material in the polyvinyl alcohol liquid, taking it out and drying to obtain a polyvinyl alcohol film;

[0035] Step 3, spraying the nano-titanium monoxide powder on the surface of the polyvinyl alcohol film, and then spraying n-butyl titanate on the surface to obtain a multi-film substrate;

[0036] Step 4, put the multi-film substrate into a sintering kettle, seal and sinter for 5 hours to obtain a titanium-based photocatalytic film.

[0037] The ultrasonic cleaning frequency in step 1 is 80 kHz, the temperature is 50° C., and the drying temperature is ...

Embodiment 3

[0043] A preparation method of high-efficiency titanium-based photocatalyst, comprising the steps of:

[0044] Step 1, put the base material into distilled water and absolute ethanol in order to ultrasonically clean it for 25 minutes, and dry to obtain a clean base material;

[0045] Step 2, adding polyvinyl alcohol into distilled water and stirring evenly to obtain a polyvinyl alcohol liquid, then immersing the base material in the polyvinyl alcohol liquid, taking it out and drying to obtain a polyvinyl alcohol film;

[0046] Step 3, spraying the nano-titanium monoxide powder on the surface of the polyvinyl alcohol film, and then spraying n-butyl titanate on the surface to obtain a multi-film substrate;

[0047] Step 4, put the multi-film substrate into a sintering kettle, seal and sinter for 4 hours to obtain a titanium-based photocatalytic film.

[0048] The ultrasonic cleaning frequency in step 1 is 70 kHz, the temperature is 45° C., and the drying temperature is 110° C. ...

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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...

Claims

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Application Information

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IPC IPC(8): B01J21/06C02F1/30B01D53/86B01D53/72
CPCB01D53/8668B01D2257/704B01J21/063B01J35/0013B01J35/004C02F1/30C02F2101/308C02F2305/10
Inventor 宇尔青
Owner 绍兴市梓昂新材料有限公司
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