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Preparation method of efficient photocatalyst

A photocatalyst and high-efficiency technology, applied in the field of photocatalysis, can solve the problem of poor titanium dioxide activity, and achieve the effect of improving the adsorption effect, improving the oxygen-deficient activity, and improving the photocatalytic performance.

Inactive Publication Date: 2020-03-27
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

[0004] Aiming at the problems in the prior art, the present invention provides a method for preparing a high-efficiency photocatalyst, which solves the problem of poor activity of existing titanium dioxide, utilizes the oxygen deficiency of titanium monoxide, and uses titanium dioxide as a coating layer to greatly improve the performance of titanium dioxide. Oxygen-deficient activity, effectively improving the overall photocatalytic performance

Method used

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  • Preparation method of efficient photocatalyst

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Effect test

Embodiment 1

[0028] A preparation method for an efficient photocatalyst, comprising the steps of:

[0029] Step 1, putting the alumina substrate into distilled water for ultrasonic dispersion for 1 hour, spraying dilute hydrochloric acid evenly on the surface after drying, and drying for the second time to obtain a roughened alumina substrate;

[0030] Step 2, adding n-butyl titanate into absolute ethanol and stirring evenly to obtain titanium alcohol solution;

[0031] Step 3, immerse the alumina substrate in the titanium alcohol solution, pull and dry evenly, repeat 5 times to obtain coated alumina;

[0032] Step 4, putting the coated alumina into the reactor for sintering for 2 hours to obtain a titanium dioxide film, and then adding hydrogen to the reactor to seal and reduce the reaction for 20 minutes to obtain a titanium monoxide-titanium dioxide composite film;

[0033] Step 5, spraying n-butyl titanate on the surface of the film, and then sintering at a high temperature for 2 hour...

Embodiment 2

[0042] A preparation method for an efficient photocatalyst, comprising the steps of:

[0043] Step 1, putting the alumina base into distilled water for ultrasonic dispersion for 2 hours, spraying dilute hydrochloric acid evenly on the surface after drying, and drying for the second time to obtain a roughened alumina base;

[0044] Step 2, adding n-butyl titanate into absolute ethanol and stirring evenly to obtain titanium alcohol solution;

[0045] Step 3, immerse the alumina substrate in the titanium alcohol solution, pull and dry evenly, repeat 10 times, and obtain the coated alumina;

[0046] Step 4, put the coated alumina into the reactor and sinter for 4 hours to obtain a titanium dioxide film, then add hydrogen to the reactor to seal and reduce the reaction for 40 minutes to obtain a titanium monoxide-titanium dioxide composite film;

[0047] Step 5, spraying n-butyl titanate on the surface of the film, and then sintering at a high temperature for 5 hours under a nitrog...

Embodiment 3

[0056] A preparation method for an efficient photocatalyst, comprising the steps of:

[0057] Step 1, putting the alumina base into distilled water for ultrasonic dispersion for 2 hours, spraying dilute hydrochloric acid evenly on the surface after drying, and drying for the second time to obtain a roughened alumina base;

[0058] Step 2, adding n-butyl titanate into absolute ethanol and stirring evenly to obtain titanium alcohol solution;

[0059] Step 3, immerse the alumina substrate in the titanium alcohol solution, pull and dry evenly, repeat 8 times, and obtain the coated alumina;

[0060] Step 4, put the coated alumina into the reactor and sinter for 3 hours to obtain a titanium dioxide film, then add hydrogen to the reactor to seal and reduce it for 30 minutes to obtain a titanium monoxide-titanium dioxide composite film;

[0061] Step 5, spraying n-butyl titanate on the surface of the film, and then sintering at a high temperature for 4 hours under a nitrogen atmosphere...

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Abstract

The present invention discloses a preparation method of an efficient photocatalyst. The method comprises the steps of: the step 1, putting an aluminum oxide base into distilled water, carrying out ultrasonic dispersion for 1-2 hours, performing airing, uniformly spraying diluted hydrochloric acid on the surface, and carrying out secondary drying, so as to obtain an aluminum oxide base material with a roughened surface; the step 2, adding titanium tetrabutoxide into absolute ethyl alcohol and performing uniform stirring, so as to obtain a titanium alcohol solution; the step 3, soaking the aluminum oxide base material into the titanium alcohol solution, performing uniform lifting and drying, and performing repeating for 5-10 times to obtain coated aluminum oxide; the step 4, putting the coated aluminum oxide into a reaction kettle for sintering for 2-4 hours to obtain a titanium dioxide film, then adding the titanium dioxide film into a hydrogen reaction kettle, and carrying out sealed reduction reaction for 20-40 minutes to obtain a titanium monoxide-titanium dioxide composite film; and the step 5, spraying the titanium tetrabutoxide on the surface of the film, and then performing high-temperature sintering in a nitrogen environment for 2-5h to obtain the photocatalytic film. The oxygen deficiency of titanium monoxide is utilized, and titanium dioxide is used as a coating layer,so that the anoxic activity of titanium dioxide is greatly improved, and the overall photocatalytic performance is effectively improved.

Description

technical field [0001] The invention belongs to the field of photocatalysis, and in particular relates to a preparation method of a high-efficiency photocatalyst. Background technique [0002] With the development of society and the improvement of people's living standards, the increasingly serious environmental pollution problems such as air pollution and water pollution have attracted more and more attention. The photocatalytic properties of semiconductor materials can be used to remove various pollutants in the environment. Among them, titanium dioxide semiconductor photocatalytic materials have high efficiency, low energy consumption, easy operation, mild reaction conditions, wide application range, and can reduce secondary pollution. It has outstanding advantages and has broad application prospects in the fields of air and water pollution control. [0003] Titanium dioxide is an excellent semiconductor. When light with a wavelength of less than 387nm irradiates it, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06A01P1/00B01D53/86B01D53/72C02F1/30C02F101/34C02F101/38
CPCB01D53/72B01D53/8668B01D2257/7027B01D2257/704B01J21/063B01J23/002B01J35/004C02F1/30C02F2101/308C02F2101/36C02F2101/38C02F2101/40C02F2305/10
Inventor 朱盼盼
Owner 绍兴市梓昂新材料有限公司
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