A kind of preparation method of titanium dioxide photocatalyst coating
A technology of titanium dioxide and photocatalyst, applied in the direction of coating, layered products, etc., can solve the problems of poor film adhesion, affect the photocatalytic properties of TiO2, shorten the service life, etc., achieve strong self-cleaning ability, long service life and low cost Effect
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Embodiment 1
[0022] (1) Weigh 5 grams of TiO 2 Add nanometer powder to 1L solution containing water, ethanol, and glacial acetic acid (the volume ratio of water: ethanol: glacial acetic acid is 1 / 1 / 0.1) and grind to obtain a uniform translucent suspension without precipitation.
[0023] (2) Apply the above-mentioned suspension to the surface of the cleaned glass by spraying to form a nanometer layer, and dry it under air conditions.
[0024] (3) heat-treat the substrate in the above step (2) at 400° C. for 10 h under air conditions, and then cool to room temperature to form a photocatalyst coating on the surface of the substrate. The obtained coating has a smooth surface, uniform thickness, good transparency, and a thickness of 300 nanometers.
Embodiment 2
[0026] (1) Weigh 5 grams of metatitanic acid, add 1L of water, ethanol, glacial acetic acid (the volume ratio of water: ethanol: glacial acetic acid is 1 / 2 / 0.1) and grind to obtain a uniform translucent suspension.
[0027] (2) Apply the above-mentioned suspension to the surface of the cleaned ceramic glazed tile by inkjet printing method to form a nanometer layer, and dry it under air condition.
[0028] (3) heat-treat the substrate in the above step (2) at 550°C for 1 hour under air conditions, and form a photocatalyst TiO on the surface of the substrate after cooling to room temperature 2 coating. The obtained coating has a smooth surface, uniform thickness, good transparency, and a thickness of 100 nanometers.
Embodiment 3
[0030] (1) Weigh 15 grams of TiO 2 Add 0.5L of nano powder to a solution containing water, ethanol, and glacial acetic acid (the volume ratio of water: ethanol: glacial acetic acid is 1 / 1 / 0.2) and grind to obtain a uniform translucent suspension without precipitation.
[0031] (2) Apply the above-mentioned suspension to the surface of the cleaned ceramic sanitary ware by spraying to form a nano-layer, and dry it under air conditions.
[0032] (3) heat-treat the substrate in the above step (2) at 600°C for 1 hour under air conditions, and form a TiO2 photocatalyst coating on the surface of the substrate after cooling to room temperature. The obtained coating has a smooth surface, uniform thickness, good transparency, and a thickness of 300 nanometers.
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