Photocatalyst composite coating and preparation method thereof

A composite coating and photocatalyst technology, which can be used in coatings, separation methods, chemical instruments and methods, etc., can solve problems such as low VOCs removal rate, enhance purification efficiency and durability, reduce forbidden band width, and reduce waste gas treatment. cost effect

Pending Publication Date: 2020-10-16
河北弘盛源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention proposes a photocatalyst composite coating and its preparation method, which solves the problem of low VOCs removal rate in the prior art

Method used

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  • Photocatalyst composite coating and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A photocatalyst composite coating, in parts by mass, said composite coating comprising: 5 parts of ferric oxide, 90 parts of nano-titanium dioxide, 2 parts of cerium nitrate, 2 parts of magnesium oxide, 1 part of scandium nitrate, 20 parts of poly Vinyl alcohol, 6 parts of adhesion promoter, the adhesion promoter includes dodecyl phosphate, azo polyurethane, and sodium silicate with a mass ratio of 1:1:1.5.

[0026] The preparation method of above-mentioned photocatalyst composite coating, comprises the steps:

[0027] A. Weigh each component according to the above-mentioned parts by mass, grind and granulate to obtain plasma sprayed particles;

[0028] B. Clean and sandblast the surface of the substrate; use plasma spraying equipment to spray the plasma sprayed particles on the substrate, and the temperature of the substrate during spraying is 100°C to form a photocatalyst composite coating, and the resulting substrate containing the photocatalyst composite coating is ...

Embodiment 2

[0031] A photocatalyst composite coating, in parts by mass, the composite coating includes: 15 parts of ferric oxide, 70 parts of nano-titanium dioxide, 5 parts of cerium nitrate, 1 part of magnesium oxide, 4 parts of scandium nitrate, 1 part of poly Vinyl alcohol, 12 parts of adhesion promoter, the adhesion promoter includes dodecyl phosphate, azo polyurethane, and sodium silicate with a mass ratio of 1:0.5:2.

[0032] The preparation method of above-mentioned photocatalyst composite coating, comprises the steps:

[0033] A. Weigh each component according to the above-mentioned parts by mass, grind and granulate to obtain plasma sprayed particles;

[0034] B. Clean and sandblast the surface of the substrate; use plasma spraying equipment to spray plasma sprayed particles on the substrate to form a photocatalyst composite coating; the thickness of the coating is 1.5 μm; the substrate is aluminum alloy.

[0035] The gases used in the plasma spraying process are argon and hydro...

Embodiment 3

[0037] A photocatalyst composite coating, in parts by mass, said composite coating comprising: 10 parts of ferric oxide, 80 parts of nano-titanium dioxide, 3 parts of cerium nitrate, 1.5 parts of magnesium oxide, 2 parts of scandium nitrate, 10 parts of poly Vinyl alcohol, 8 parts of adhesion promoter, the adhesion promoter includes dodecyl phosphate, azo polyurethane, and sodium silicate with a mass ratio of 1:0.8:1.8.

[0038] The preparation method of above-mentioned photocatalyst composite coating, comprises the steps:

[0039] A. Weigh each component according to the above-mentioned parts by mass, grind and granulate to obtain plasma sprayed particles;

[0040] B. Clean and sandblast the surface of the substrate; spray plasma spray particles on the substrate by plasma spraying equipment to form a photocatalyst composite coating; the thickness of the coating is 1.2 μm; the substrate is magnesium alloy.

[0041] The gases used in the plasma spraying process are argon and h...

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Abstract

The invention belongs to the technical field of photocatalytic coatings, and provides a photocatalyst composite coating, which comprises the following components in parts by mass: 5-15 parts of ferroferric oxide, 70-90 parts of nano titanium dioxide, 2-5 parts of cerium nitrate, 1-2 parts of magnesium oxide, 1-4 parts of scandium nitrate and 1-20 parts of polyvinyl alcohol. By means of the technical scheme, the problem that in the prior art, the VOCs removal rate is low is solved.

Description

technical field [0001] The invention belongs to the technical field of photocatalyst coatings, and relates to a photocatalyst composite coating and a preparation method thereof. Background technique [0002] Typical substances of volatile organic compounds (VOCs) in air pollutants include benzene, toluene, xylene, styrene, trichloroethylene, chloroform, trichloroethane, diisocyanate (TDI), diisocyanocresyl, etc. In addition to the direct harm of VOCs air pollutants to human health, the VOCs discharged into the atmosphere also react photochemically with the pollutant nitrogen oxides in the atmospheric environment to form ozone under the irradiation of sunlight, causing the ozone in the atmospheric environment to exceed the standard. At present, the main process routes of VOCs treatment are thermal combustion method, absorption decomposition method, photocatalytic oxidation method, low temperature plasma method, biological method, etc. Among them, photocatalytic oxidation meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/83B01J31/38B01J35/00B01J37/02B01J37/34C23C4/04C23C4/134B01D53/86B01D53/72
CPCB01J23/83B01J31/38B01J37/0225B01J37/349B01J35/004C23C4/04C23C4/134B01D53/007B01D53/8668Y02A50/20
Inventor 禄煜刘力盈陈会娟李宏娟禄少辰王栋李培昌卢云峰
Owner 河北弘盛源科技有限公司
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