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A diatom mud coating with purifying effect

A technology of diatom mud coating and function, applied in the direction of coating, etc., to achieve the effects of improving photocatalytic performance, improving degradation rate, and increasing catalytic area

Active Publication Date: 2020-10-27
广东吉美帮新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Metal-doped modified BiNbO 4 There are few reports on photocatalysts, and even less reports on their application in diatom mud coatings. Therefore, it is necessary to research and develop new high-efficiency photocatalysts.

Method used

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  • A diatom mud coating with purifying effect
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of diatom mud coating with purifying effect, the weight percent of each raw material is: diatomite 10%, shell powder 5%, light calcium carbonate 25%, ethylene-vinyl acetate copolymer 12%, cellulose ether 5% %, composite photocatalyst 5%, guar gum 6%, surfactant 0.5%, dispersant 1%, the balance is deionized water;

[0038] The composite photocatalyst is Zr-BiNbO 4 Photocatalyst, Zr-BiNbO 4 The preparation method of photocatalyst is:

[0039] (1) 10mol bismuth nitrate is dissolved in 50% concentrated nitric acid, is diluted to 5mol / L by adding water while stirring, obtains bismuth nitrate acid solution after stirring;

[0040] (2) 11mol potassium niobate is dissolved in 5-7mol / L potassium hydroxide solution, after stirring, potassium niobate solution is obtained;

[0041] (3) While stirring the bismuth nitrate solution, drop the potassium niobate solution into it, after the dropwise addition, stir for 15 min;

[0042] (4) 0.1mol zirconium nitrate is added in th...

Embodiment 2

[0051] A kind of diatom mud coating with purifying effect, the weight percent of each raw material is: diatomite 15%, shell powder 3%, light calcium carbonate 30%, ethylene-vinyl acetate copolymer 10%, cellulose ether 7% %, composite photocatalyst 8%, guar gum 9%, surfactant 1, dispersant 2%, and the balance is deionized water;

[0052] The composite photocatalyst is Zr-BiNbO 4 Photocatalyst, Zr-BiNbO 4 The preparation method of photocatalyst is with embodiment 1;

[0053] Described tensio-active agent is fatty alcohol polyoxyethylene ether ammonium sulfate;

[0054] Described dispersant is calcium stearate;

[0055] A kind of preparation method of the diatom ooze coating with purifying effect is:

[0056] S1. Activation of diatomite: Add 1kg of diatomite to a ball mill to grind and pulverize, soak in 10% nitric acid for 5 hours, filter, wash until neutral, dry, and then put it into a muffle furnace for gradient calcination. The calcination steps are: (a) calcine at 300°C...

Embodiment 3

[0060] A diatom mud coating with purifying effect, the weight percentage of each raw material is: diatomite 5%, shell powder 6%, light calcium carbonate 25%, ethylene-vinyl acetate copolymer 12%, cellulose ether 6% %, composite photocatalyst 7%, guar gum 8%, surfactant 0.5%, dispersant 3%, and the balance is deionized water;

[0061] The composite photocatalyst is Zr-BiNbO 4 Photocatalyst, Zr-BiNbO 4 The preparation method of photocatalyst is with embodiment 1;

[0062] Described tensio-active agent is fatty alcohol polyoxyethylene ether ammonium sulfate;

[0063] Described dispersant is calcium stearate;

[0064] A kind of preparation method of the diatom ooze coating with purifying effect is:

[0065] S1. Activation of diatomite: Add 1kg of diatomite into a ball mill to grind and pulverize, soak in 10% nitric acid for 4 hours, filter, wash until neutral, dry, and then put it into a muffle furnace for gradient calcination. The calcination steps are: (a) calcine at 300°C ...

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Abstract

The invention discloses diatom ooze coating with a purification effect. The diatom coating with the purification effect comprises the following raw materials according to the weight percentage of: 5-15% of diatom ooze, 3-6% of shell powder, 20-30% of light calcium carbonate, 10-15% of ethylene-vinyl acetate copolymer, 5-7% of cellulose ether, 5-8% of composite photocatalyst, 6-9% of guar gum, 0.5-2% of surfactant, 1-3% of dispersant and the balance deionized water, wherein the composite photocatalyst is a Zr-BiNbO4 photocatalyst; and Zr is doped into BiNbO4 for modification treatment, so thatthe visible light range of the BiNbO4 is widened, the photo-induced electron-hole recombination of the BiNbO4 is reduced, and the photocatalytic performance of the BiNbO4 is greatly improved; and thecomposite photocatalyst Zr-BiNbO4 was loaded onto the activated diatom ooze, so that the catalysis area of the photocatalyst is increased, and the degradation rate of formaldehyde by the composite photocatalyst Zr-BiNbO4 is greatly increased.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a diatom mud coating with purifying effect. Background technique [0002] It has become a consensus that environmental pollution will induce pathological changes in the human body. The pathogenic bacteria, PM2.5 fine particles and pathogenic and carcinogenic organic substances permeating the living environment have attracted more and more attention. The formaldehyde, volatile organic compounds (Volatile Organic Compounds, VOC), fine dust particles, toxic Composition has become the number one concern for consumers after a home renovation. Among them, formaldehyde is a colorless gas with a strong pungent smell. It is very volatile at room temperature, and the volatile amount increases with the increase of temperature. It has a strong stimulating effect on human skin and mucous membranes. It can be converted into methanol in the body and have adverse e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D123/08C09D101/26C09D105/00C09D7/61C09D7/63C09D7/62C09D7/65
CPCC08K2003/265C08K2201/014C08L2205/03C09D123/0853C09D7/61C09D7/62C09D7/63C09D7/65C09D7/70C08L1/26C08L5/00C08L71/02C08K13/06C08K3/26C08K7/26C08K3/24
Inventor 不公告发明人
Owner 广东吉美帮新材料有限公司
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