Preparation method of high-activity photocatalytic particles

A technology of photocatalytic particles and high activity, applied in the field of photocatalysis, can solve the problems of low quantum yield of titanium dioxide particles, achieve the effect of improving photocatalytic degradation efficiency, ensuring integrity and improving activity

Inactive Publication Date: 2020-02-28
绍兴市梓昂新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems in the prior art, the present invention provides a method for preparing high-activity photocatalytic particles, which solves the problem of low quantum yield of titanium dioxide particles, uses titanium monoxide as the inner layer, and titanium dioxide as the coating layer to form titania Particles, which produce oxygen deficiency characteristics, greatly improve the activity of surface titanium dioxide, and effectively improve the photocatalytic degradation efficiency

Method used

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  • Preparation method of high-activity photocatalytic particles

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Embodiment 1

[0024] The invention discloses a preparation method of highly active photocatalytic particles. The highly active photocatalytic particles are coated on the surface of nanometer titanium monoxide by n-butyl titanate. It is converted into titanium dioxide by hydrolysis to form polytitanium photocatalytic particles with titanium monoxide as the core and titanium dioxide as the coating.

[0025] The method comprises the steps of:

[0026] Step 1, adding titanium monoxide to a ball mill, adding a small amount of distilled water to stir to form a slurry, and ball milling for 2 hours, then using hot nitrogen to seal and blow dry, and obtain nano-titanium monoxide after cooling;

[0027] Step 2, slowly adding nano-titanium monoxide to n-butyl titanate for low-temperature microwave reaction for 2 hours, stirring to form a suspension slurry;

[0028] Step 3, spray the suspension slurry and distilled water simultaneously in a constant temperature reaction kettle for constant temperature...

Embodiment 2

[0037] The invention discloses a preparation method of highly active photocatalytic particles. The highly active photocatalytic particles are coated on the surface of nanometer titanium monoxide by n-butyl titanate. It is converted into titanium dioxide by hydrolysis to form polytitanium photocatalytic particles with titanium monoxide as the core and titanium dioxide as the coating.

[0038] The method comprises the steps of:

[0039] Step 1, adding titanium monoxide to a ball mill, adding a small amount of distilled water to stir to form a slurry, and ball milling for 5 hours, then using hot nitrogen to seal and blow dry, and obtain nano-titanium monoxide after cooling;

[0040] Step 2, slowly adding nano-titanium monoxide to n-butyl titanate for low-temperature microwave reaction for 5 hours, and stirring to form a suspension slurry;

[0041] Step 3, spray the suspension slurry and distilled water simultaneously in a constant temperature reaction kettle for constant tempera...

Embodiment 3

[0050] The invention discloses a preparation method of highly active photocatalytic particles. The highly active photocatalytic particles are coated on the surface of nanometer titanium monoxide by n-butyl titanate. It is converted into titanium dioxide by hydrolysis to form polytitanium photocatalytic particles with titanium monoxide as the core and titanium dioxide as the coating.

[0051] The method comprises the steps of:

[0052] Step 1, adding titanium monoxide to a ball mill, adding a small amount of distilled water to stir to form a slurry, and ball milling for 4 hours, then using hot nitrogen to seal and blow dry, and obtain nano-titanium monoxide after cooling;

[0053] Step 2, slowly adding nano-titanium monoxide to n-butyl titanate for low-temperature microwave reaction for 4 hours, stirring to form a suspension slurry;

[0054] Step 3, spray the suspension slurry and distilled water in a constant temperature reaction kettle for 2 hours at a constant temperature, ...

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Abstract

The invention belongs to the field of photocatalysis, and particularly relates to a preparation method of high-activity catalytic particles, and the high-activity catalytic particles are prepared by wrapping the surface of nano titanium monoxide with n-butyl titanate and hydrolyzing and converting into titanium dioxide to form multi-titanium photocatalytic particles which take titanium monoxide asa core and titanium dioxide as a wrapping layer. The problem that the quantum yield of titanium dioxide particles is low is solved, the titanium monoxide serves as an inner layer, the titanium dioxide serves as the wrapping layer, the formed titanium oxide particles have the oxygen deficiency characteristic, the activity of the titanium dioxide on the surface is greatly improved, and the photocatalytic degradation efficiency is effectively improved.

Description

technical field [0001] The invention belongs to the field of photocatalysis, and in particular relates to a preparation method of highly active catalytic particles. Background technique [0002] In recent years, semiconductor photocatalysts have important applications in the field of environmental pollution control. As a representative photocatalyst, titanium dioxide is currently a widely used photocatalyst. In theory, titanium dioxide has the advantages of high photocatalytic activity, good stability, non-toxicity, and low cost. In addition, the photocatalytic reaction of titanium dioxide can be carried out under normal temperature and pressure conditions. [0003] However, in fact, titanium dioxide photocatalysis is still in the laboratory stage, and there are still many technical difficulties in practical applications. The photocatalytic treatment efficiency of titanium dioxide is low, it is difficult to form a rapid degradation, and it is very easy to deactivate in the...

Claims

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Application Information

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IPC IPC(8): B01J21/06B01D53/86B01D53/72C02F1/30
CPCB01J21/063B01D53/8668B01D53/72C02F1/30B01D2257/7027B01D2257/704C02F2101/308C02F2305/10B01J35/23B01J35/39
Inventor 朱盼盼
Owner 绍兴市梓昂新材料有限公司
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