Glass window photothermal catalytic coating film for sterilization and disinfection, and preparation and application thereof
A technology of photothermal catalysis, sterilization and disinfection, which is applied in paints containing biocide, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of energy consumption, large band gap width, poor effect, etc. High conversion efficiency, simple and fast operation, and low cost
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Embodiment 1
[0033] Mix tungsten chloride and ethanol at a mass ratio of 1 to 1000 and stir for 2 hours until the solution is clear, and then evaporate under reduced pressure to obtain solid substance A; 2) Hydroxypropyl acrylate (HPA) is mixed at a volume ratio of 1:10 to Add dropwise to the silica sol solution at a rate of 20ml / L (sol) / min, mix and stir in a rotary evaporator for 1 hour, and keep the temperature at 35°C to obtain a hybrid solution B; 3) Mix solid A and solution B by mass Mix evenly at a ratio of 1:30,000 to obtain the photothermal catalysis casting solution; 4) Then spray the casting solution to the glass surface through a sprayer, and wait for 5 minutes in a shading environment; 5) Wait for the casting solution to level off naturally, Cured with 1kW UV light for 3 minutes.
[0034] Spray film treatment on the windows of 4*4*5m single room, the window area is 4.5m 2, the experiment was conducted in May. Every two days at 17 o'clock in the afternoon, the room is collect...
Embodiment 2
[0036] Keep other conditions completely consistent with Example 1, adjust the mass ratio of tungsten chloride to ethanol from 1:300 to 1000, the results are shown in Table 1, under the action of photothermal catalytic membrane, the content of microorganisms in the air decreased by about 20% to 45%, and the effect is the best when the mass ratio of tungsten chloride to ethanol is 1:750.
[0037] Table 1
[0038] Proportion
Embodiment 3
[0040] Mix tungsten chloride and ethanol at a mass ratio of 1 to 1000 and stir for 2 hours until the solution is clear, and then evaporate under reduced pressure to obtain solid substance A; 2) Hydroxypropyl acrylate (HPA) is mixed at a volume ratio of 1:10 to Add dropwise to the silica sol solution at a rate of 10ml / L (sol) / min, mix and stir in a rotary evaporator for 1 hour, and keep the temperature at 35°C to obtain a hybrid solution B; 3) Mix solid A and solution B by mass Mix evenly at a ratio of 1:10000 to obtain the photothermocatalytic casting solution: 4) Then spray the casting solution onto the glass surface through a sprayer, and wait for 5 minutes under a light-shielding environment; 5) Wait for the casting solution to level off naturally, Cured with UV light for 3 minutes.
[0041] The assay method is the same as in Example 2, except that the catalyst concentration in this research is 3 times that of Example. Experimental results such as figure 2 As shown, unde...
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