A kind of photocatalyst powder and preparation method thereof

A technology of photocatalyst and preparation process, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. It can solve the problems of poor weather resistance and poor adhesion, which is not easy to achieve Abrasion and drop, strong adhesion, effect of increasing concentration

Inactive Publication Date: 2019-12-31
佛山市国汉科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the coatings prepared from existing photocatalyst powder generally have the disadvantages of poor weather resistance and poor adhesion.

Method used

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  • A kind of photocatalyst powder and preparation method thereof
  • A kind of photocatalyst powder and preparation method thereof
  • A kind of photocatalyst powder and preparation method thereof

Examples

Experimental program
Comparison scheme
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preparation example Construction

[0048] A preparation process of photocatalyst powder, comprising the following steps:

[0049] 1) Put the formula amount of titanyl sulfate, metatitanic acid and composition A into the mixer, and stir evenly to obtain the first mixture;

[0050] 2) Put the basic oxide solution of the formula into the mixer, mix with the first mixture, and stir for 8-12min to obtain the second mixture, the second mixture is a solid-liquid mixture;

[0051] 3) performing solid-liquid separation on the second mixture to obtain a solid mixture and a liquid mixture;

[0052] 4) taking the solid mixture and drying it in an environment below 100-150°C to obtain the first semi-finished product;

[0053] 5) Calcining the first semi-finished product to obtain a second semi-finished product;

[0054] 6) Grinding the second semi-finished product to obtain the photocatalyst powder.

[0055] As a preferred scheme, in step 1), the rotating speed of the mixer is 1200r / min, and the stirring time is 25-35min...

Embodiment 1

[0057] A photocatalyst powder is prepared from metatitanic acid, composition A (metal oxide and non-metal oxide), alkaline oxide solution, titanyl sulfate, and the weight percentages of the above-mentioned components are shown in Table 1. The photocatalyst powder is prepared according to the following steps:

[0058] 1) Put the formula quantity of titanyl sulfate, metatitanic acid and composition A into the mixer, set the rotation speed of the mixer to 1200r / min, and the stirring time to 30min, after stirring evenly, the first mixture is obtained;

[0059]2) Put the basic oxide solution of the formulated amount into the mixer, mix with the first mixture, and stir for 10 minutes to obtain a second mixture, which is a solid-liquid mixture;

[0060] 3) performing solid-liquid separation on the second mixture to obtain a solid mixture and a liquid mixture;

[0061] 4) Take the solid mixture, place it in an environment below 150°C, and dry it for 1 hour to obtain the first semi-fi...

Embodiment 2

[0065] A photocatalyst powder is prepared from metatitanic acid, composition A (metal oxide and non-metal oxide), alkaline oxide solution, titanyl sulfate, and the weight percentages of the above-mentioned components are shown in Table 1. The photocatalyst powder is prepared according to the following steps:

[0066] 1) Put the formula quantity of titanyl sulfate, metatitanic acid and composition A into the mixer, set the rotation speed of the mixer to 1200r / min, and the stirring time to 25min, after stirring evenly, the first mixture is obtained;

[0067] 2) Put the basic oxide solution of the formulated amount into the mixer, mix with the first mixture, and stir for 12 minutes to obtain a second mixture, which is a solid-liquid mixture;

[0068] 3) performing solid-liquid separation on the second mixture to obtain a solid mixture and a liquid mixture;

[0069] 4) Take the solid mixture, place it in an environment below 150°C, and dry it for 0.7h to obtain the first semi-fin...

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Abstract

The invention discloses photocatalyst powder. The photocatalyst powder is prepared from the following components in percentage by weight: 35 to 65 percent of metatitanic acid, 0.5 to 2.5 percent of composition A, 1 to 10 percent of basic oxide solution and the balance of titanyl sulfate, wherein the weight percent sum of the components is 100 percent; the component A is prepared by mixing metallic oxides with nonmetallic oxides according to any proportion. The photocatalyst powder is simple in component, high in oxidation catalysis capability and good in weather fastness; toxic substances can be effectively decomposed; the purification efficiency is high. The invention also discloses a preparation method of the photocatalyst powder. The preparation method has the advantages of fewer steps, simple and safe process, high maneuverability and low preparation cost.

Description

technical field [0001] The invention relates to the technical field of chemical products, in particular to a photocatalyst powder and a preparation method thereof. Background technique [0002] Photocatalyst (a compound word of light+catalyst (catalyst)) is a nano-scale metal oxide material, under the action of light, it can catalyze water or oxygen in the air into hydroxyl radicals with strong oxidation ability ( OH), superoxide anion radicals (O 2 ), reactive oxygen species (HO 2 ·, H 2 o 2 ) and other active groups with extremely strong oxidizing ability. The energy of these active groups is equivalent to the high temperature of 3600K, and they have strong oxidizing properties. After they contact with the surrounding harmful gases, pollutants, and bacteria, they undergo redox reactions. These strong oxidizing groups can effectively decompose various organic compounds and some inorganic substances with unstable chemical bonds, and can destroy the cell membrane of bacte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/26C09D7/61C09D127/12
CPCB01J23/26C08K3/22C08K3/24C08K3/30C08K3/36C08K2003/2251C08K2003/3045C08K2201/011C08K2201/014C09D7/61C09D127/12
Inventor 梁汉辉程国强
Owner 佛山市国汉科技有限公司
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