Composite photocatalitic germicide
A technology of composite photocatalyst and antibacterial agent, which is applied in the direction of bactericide, biocide, biocide, etc., can solve the problems that antibacterial performance fibers and textiles cannot be used, the particle size of silver-loaded titanium dioxide is large, and the photocatalytic antibacterial performance is poor. Effects of improved antibacterial performance, high catalytic activity, and good antibacterial performance
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Embodiment 1
[0010] Composite photocatalyst antibacterial agent, its component and weight percent are: TiO 2 (87.0%), SiO 2 (10.7%) and Ag (2.3%), its preparation process is as follows:
[0011] Dissolve tetrabutyl titanate in absolute ethanol to prepare a 10% ethanol solution of tetrabutyl titanate, prepare a mixed solution of deionized water and ethanol at a ratio of 1:5, and drop a small amount of glacial acetic acid to make the deionized water, The pH value of the ethanol mixture is 4, and an equal volume of deionized water and ethanol mixture is dropped into the tetrabutyl titanate ethanol solution, stirring while dropping, and the temperature of the solution is kept at 15°C. After adding the tetrabutyl titanate ethanol solution into the mixed solution of deionized water and ethanol, stir for 6 hours to obtain a uniform and transparent titanium dioxide sol.
[0012] Dissolve ethyl orthosilicate in absolute ethanol, prepare 10% ethyl orthosilicate ethanol solution, prepare deionized ...
Embodiment 2
[0016] Composite photocatalyst antibacterial agent, its component and weight percent are: TiO 2 (80.6%), SiO 2 (16.5%) and Ag (2.9%), its preparation process is as follows:
[0017] Dissolve tetrabutyl titanate in absolute ethanol to prepare a 10% ethanol solution of tetrabutyl titanate, prepare deionized water and ethanol mixture at a ratio of 1:3, add a small amount of glacial acetic acid to make the deionized water, The PH value of the ethanol mixture is 4.5, drop an equal volume of deionized water and ethanol mixture into the tetrabutyl titanate ethanol solution, stir while adding, keep the temperature of the solution at 25°C, wait until the deionized water and ethanol are mixed After adding tetrabutyl titanate ethanol solution to the solution, stir for 5 hours to obtain a uniform and transparent titanium dioxide sol.
[0018] Dissolve ethyl orthosilicate in absolute ethanol, prepare 10% ethyl orthosilicate ethanol solution, prepare deionized water and ethanol mixed solu...
Embodiment 3
[0022] Composite photocatalyst antibacterial agent, its component and weight percent are: TiO 2 (73.7%), SiO 2 (22.6%) and Ag (3.7%), its preparation process is as follows:
[0023] Dissolve tetrabutyl titanate in absolute ethanol to prepare a 10% ethanol solution of tetrabutyl titanate, prepare deionized water and ethanol mixture at a ratio of 1:3, add a small amount of glacial acetic acid to make the deionized water, The PH value of the ethanol mixture is 5. Drop an equal volume of deionized water and ethanol mixture into the tetrabutyl titanate ethanol solution, and stir while adding. The temperature of the solution is kept at 35°C. After the deionized water and ethanol are mixed After adding tetrabutyl titanate ethanol solution to the solution, stir for 4 hours to obtain a uniform and transparent titanium dioxide sol.
[0024] Dissolve ethyl orthosilicate in absolute ethanol, prepare 10% ethyl orthosilicate ethanol solution, prepare deionized water and ethanol mixed solu...
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