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Preparation method of titanium dioxide photocatalysis coating

A titanium dioxide and photocatalytic technology, applied in the field of photocatalytic materials, can solve the problems of reduced photocatalytic activity, low production efficiency, poor photocatalytic performance and stability of the coating, and achieve high catalytic efficiency, low equipment requirements, and good consistency Effect

Inactive Publication Date: 2019-10-25
SHENZHEN JIEZHIXIN INTELLIGENT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The titanium dioxide photocoating produced by the current commonly used preparation method has low production efficiency, and the photocatalytic performance and stability of the coating are poor, and the photocatalytic activity will decrease after a period of use.

Method used

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  • Preparation method of titanium dioxide photocatalysis coating
  • Preparation method of titanium dioxide photocatalysis coating
  • Preparation method of titanium dioxide photocatalysis coating

Examples

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preparation example Construction

[0022] Figure 1 to Figure 4 Show a preferred embodiment of the preparation method of titanium dioxide photocatalytic coating of the present invention, it comprises the steps:

[0023] S1. Use acetone, absolute ethanol and deionized water to ultrasonically clean the surface of the titanium rod and fully dry it, and repeat the cleaning three times;

[0024] S2. Uniformly disperse the titanium dioxide nanopowder in the deionized aqueous solution, and form a stable suspension by vigorous stirring;

[0025] S3. Spray the suspension evenly on the surface of the titanium rod through the spray gun, and during the spraying process, the titanium rod rotates at a constant speed;

[0026] S4. The sprayed titanium rod is sprayed again after being baked, and the cycle is repeated, and the number of spraying and baking times is 10 times.

[0027] In this embodiment, the titanium rods in step S1 were cleaned by ultrasonic cleaning for 15 minutes with acetone, 15 minutes with absolute ethan...

Embodiment 1

[0033] A titanium rod with a diameter of 3.0 mm and a length of 2.5 cm was placed in an ultrasonic cleaner, and washed with three solvents: acetone, absolute ethanol and deionized water in sequence, and cycled three times to completely remove surface pollutants. Fully disperse 15g of nanometer titanium dioxide in 100ml of deionized aqueous solution, and make the titanium dioxide stably suspended in the deionized aqueous solution by stirring vigorously. Use dispersant to help improve the dispersion effect of nano titanium dioxide in deionized water, but because titanium dioxide coating will be applied in the electric toothbrush, in order to avoid residual organic reagent, so adopt strong stirring in the present invention to improve the dispersion effect of nano titanium dioxide . Put the nano-titanium dioxide suspension into the spray gun, and spray it evenly on the surface of the titanium rod. During the spraying process, the titanium rod rotates at a speed of 180° / min, and th...

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Abstract

The invention relates to a preparation method of a titanium dioxide photocatalysis coating. The preparation method comprises the following steps of first, cleaning in an ultrasonic treatment the surface of a titanium bar with acetone, anhydrous ethanol and deionized water, fully drying, repeatedly cleaning for three times, then evenly dispersing titanium dioxide nano powder in a deionized water solution, forming stable suspension liquid by strong stirring, then evenly spraying the suspension liquid through a spray gun on the surface of the titanium bar, in the spraying process, rotating the titanium bar at a constant speed, spraying the titanium bar after spraying again after baking, moving in circles, and conducting 10 times of spraying and baking. According to the preparation method of the titanium dioxide photocatalysis coating, the titanium dioxide photocatalysis coating has the characteristics of large area preparation, low equipment requirements and good consistency, the titaniumdioxide nano powder is fixed on a titanium bar substrate by baking at 400DEG C, process production is carried out, production efficiency is improved, and coating catalysis efficiency is high, and stability is good.

Description

technical field [0001] The invention relates to the technical field of photocatalytic materials, in particular to a method for preparing a titanium dioxide photocatalytic coating. Background technique [0002] Photocatalysis is recognized as an important technical approach for air and water purification and organic degradation. Based on the principle of photocatalysis, a variety of semiconductor materials have been developed in recent years, among which titanium dioxide has become the most concerned photocatalytic material due to its low cost, non-toxicity, and high catalytic efficiency. When the photocatalytic material is irradiated by light, when the photon energy is higher than the forbidden band width, the electrons in the semiconductor transition from the valence band to the conduction band, generating electron-hole pairs, in which the electrons and holes have strong reductive and oxidative properties respectively. sex. During the transport of electrons and holes, one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J21/06B01J37/02C09D1/00C02F1/30C02F101/30C02F101/34C02F101/38
CPCB01J21/063B01J37/0225C09D1/00C02F1/30C02F2305/10C02F2101/308C02F2101/34C02F2101/38C02F2101/40B01J35/39
Inventor 刘自成
Owner SHENZHEN JIEZHIXIN INTELLIGENT TECH CO LTD
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