Photocatalyst and production method for same
A technology of photocatalyst and manufacturing method, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., which can solve the problems of photocatalytic activity hindrance, activity reduction, and low adhesion force, and achieve stable photocatalysis Function, stable antibacterial effect
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Embodiment 1
[0087] As the base material of the photocatalyst, prepare four long-sized titanium foils (material: one type of pure titanium specified in JIS standard) with a thickness of 80 μm, a width of 125 mm, and a length of 10 m cleaned with an alkaline cleaning agent. Degreasing and pickling were performed in the same manner. Using four kinds of electrolytic baths (electrolytic bath Nos. 1 to 4) having different compositions shown in Table 1, anodic oxidation treatment was given to each of four titanium foils. In this anodizing treatment, a voltage of +100 V was applied while running the titanium foil in a 10° C. electrolytic bath of a continuous anodizing apparatus, and anodizing treatment was performed for 30 seconds. The method of applying a voltage to the titanium foil during the anodizing treatment was adopted (method 2). The four long anodized titanium foils were each heat-treated in an air atmosphere at 450° C. for 60 seconds while running through a continuous heating device u...
Embodiment 2
[0094] In the anodizing treatment, the voltage applied to the titanium foil (applied voltage), the time of anodizing treatment (anodizing time), and the temperature of the electrolytic bath were confirmed to be the implementation conditions of the anodizing treatment (anodizing conditions). (bath temperature), and the basic experiment of the relationship with the antibacterial activity value (R) obtained by the photocatalytic antibacterial property test based on JIS R1702 (film adhesion method). In Example 2, an experiment was carried out in which the set values of the applied voltage, anodized time, and bath temperature of the above-mentioned anodizing conditions were respectively changed, and a basic experiment was carried out for each of these set values for a plurality of titanium foils. . Furthermore, the specifications (thickness, length, width, material) of the titanium foil are the same as those used in Example 1. The anodizing time was changed by adjusting the li...
Embodiment 3
[0100] An experiment was conducted in which anodized (anodized) long titanium foil was heat-treated with a heating device, and the titanium oxide film formed on the surface of the titanium foil was Crystals of anatase-type titanium oxide are produced to exert antibacterial properties. In this basic experiment 3, the heating temperature in the heating device was set to three kinds of temperatures of 450°C, 550°C, and 750°C in the air atmosphere. An experiment in which a long titanium foil was heat-treated for 60 seconds while traveling from the front end to the extreme end in the heating apparatus. Other experimental conditions were the same as in Example 1 except that the anodization time was 22.5 seconds. Six samples were collected for each sample to confirm the antibacterial activity value (R) of the obtained photocatalyst, and the surface of the photocatalyst was photographed with a scanning electron microscope to confirm the state of the surface.
[0101] The relationshi...
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