Preparation method for visible light ternary photocatalyst

A photocatalyst and visible light technology, applied in the field of photocatalysis, can solve the problems of photocatalyst stability, high photodegradation efficiency, and poor performance, and achieve improved photocatalytic performance and photocatalytic response range, good dispersion effect, and full mixing Adsorption effect

Inactive Publication Date: 2018-07-24
SHAOXING UNIVERSITY
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  • Claims
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Problems solved by technology

[0007] Aiming at the problems in the prior art, the present invention provides a preparation method of a visible light ternary photocatalyst, which solves the problem of poor performance of the graphene-titanium dioxide catalyst in the visible light region, and the stability and photodegradation efficiency of the prepared photocatalyst high

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  • Preparation method for visible light ternary photocatalyst
  • Preparation method for visible light ternary photocatalyst

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Embodiment 1

[0034] A kind of preparation method of visible light ternary photocatalyst, described preparation method comprises the steps:

[0035] Step 1, adding n-butyl titanate to absolute ethanol, and ultrasonically stirring for 30 minutes, to obtain titanate alcohol solution;

[0036] Step 2, slowly drop ethyl silicate into the titanic acid alcohol solution, and mechanically stir until completely dissolved to obtain a titanium-silicon mixed alcohol solution;

[0037] Step 3, adding the dispersant to deionized water to form a dispersion, and then slowly adding it to the titanium silicon alcohol solution to obtain a titanium silicon dispersion;

[0038] Step 4, put the graphene into the titanium-silicon dispersion, and circulate the ultrasonic reaction for 4 hours to obtain a ternary mixture;

[0039] Step 5, put the ternary mixed solution into a vacuum distillation reactor for 60 minutes of vacuum distillation reaction to obtain a viscous liquid;

[0040] Step 6, putting the viscous ...

Embodiment 2

[0051] A kind of preparation method of visible light ternary photocatalyst, described preparation method comprises the steps:

[0052] Step 1, adding n-butyl titanate to absolute ethanol, and ultrasonically stirring for 60 minutes, to obtain titanate alcohol solution;

[0053] Step 2, slowly drop ethyl silicate into the titanic acid alcohol solution, and mechanically stir until completely dissolved to obtain a titanium-silicon mixed alcohol solution;

[0054] Step 3, adding the dispersant to deionized water to form a dispersion, and then slowly adding it to the titanium silicon alcohol solution to obtain a titanium silicon dispersion;

[0055] Step 4, put the graphene into the titanium-silicon dispersion, and circulate the ultrasonic reaction for 6 hours to obtain a ternary mixture;

[0056] Step 5, put the ternary mixed solution into a vacuum distillation reactor for 90 minutes of vacuum distillation to obtain a viscous liquid;

[0057] Step 6: put the viscous liquid in an ...

Embodiment 3

[0068] A kind of preparation method of visible light ternary photocatalyst, described preparation method comprises the steps:

[0069] Step 1, adding n-butyl titanate to absolute ethanol, and ultrasonically stirring for 50 minutes, to obtain titanate alcohol solution;

[0070] Step 2, slowly drop ethyl silicate into the titanic acid alcohol solution, and mechanically stir until completely dissolved to obtain a titanium-silicon mixed alcohol solution;

[0071] Step 3, adding the dispersant to deionized water to form a dispersion, and then slowly adding it to the titanium silicon alcohol solution to obtain a titanium silicon dispersion;

[0072] Step 4, put the graphene into the titanium-silicon dispersion, and circulate the ultrasonic reaction for 5 hours to obtain a ternary mixture;

[0073] Step 5, put the ternary mixed solution into a vacuum distillation reactor for 80 minutes of vacuum distillation reaction to obtain a viscous liquid;

[0074] Step 6, putting the viscous ...

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Abstract

The invention belongs to the technical field of photocatalysis, and particularly relates to a preparation method for a visible light ternary photocatalyst. The preparation method comprises the following steps: step 1, adding tetrabutyl titanate into absolute ethyl alcohol, and ultrasonically stirring for 30-60 minutes to obtain a titanate alcohol solution; step 2, slowly dropwise adding ethyl silicate into the titanate alcohol solution, mechanically stirring until completely dissolving to obtain a titanium-silicon mixed alcohol solution; step 3, adding a dispersing agent into ionized water toform dispersion liquid, and slowly adding the dispersion liquid into titanium-silicon alcohol solution to obtain titanium-silicon dispersion liquid; step 4, putting graphene into the titanium-silicondispersion liquid, and performing cyclic ultrasonic reaction for 4-6 hours, thereby obtaining the ternary mixed solution; step 5, putting the ternary mixed solution into a decompression distillation reaction kettle to perform decompression distillation reaction for 60-90 minutes, thereby obtaining a viscous solution; and step 6, putting the thick solution into a drying oven to dry for 30-50 minutes, and heating and sintering for 20-40 minutes, thereby obtaining the ternary photocatalyst. The preparation method solves the problem that performance, in a visible light region, of a graphene-titanium dioxide catalyst is not good; and the prepared photocatalyst is high in stability and photodegradation efficiency.

Description

technical field [0001] The invention belongs to the technical field of photocatalysis, and in particular relates to a preparation method of a visible light ternary photocatalyst. Background technique [0002] With the rapid development of science and technology, human living standards are gradually rising. Our country has made great strides in economic growth, and productivity has been greatly improved. However, in many areas of our country, the economy has been greatly improved at the cost of destroying the environment. Therefore, we can see small squares built everywhere, and a large amount of industrial sewage is discharged into the river. The pm2.5 index only increases. Our The living environment is worrying. Water is the source of life, and water pollution has become the common enemy of all mankind. How to reduce the impact of water pollution is a problem we must consider. Now in terms of sewage treatment, there are adsorption, artificial salvage, etc. All in all, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/18
CPCB01J21/18B01J35/004
Inventor 方泽波朱燕艳
Owner SHAOXING UNIVERSITY
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