| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and a device for cleaning air capable of regenerating the clean air harmless to humans or animals by instantaneously subjecting a large amount of the air to sterilizing, deodorizing and cleaning treatments. SOLUTION: The method for cleaning the air includes a first process step for forming ozone for treating the air to be treated by irradiating the air with short-wavelength UV rays of >=110 to <200 nm, a second process step for forming active oxygen by irradiating the air treated in the first process step with middle-wavelength UV rays of >=200 to <300 nm and a third process step of converting the active oxygen to a base-state oxygen molecule by irradiating the air treated in the second process step with long-wavelength UV rays of >=300 to <=360 nm, in which at least the second and/or the third process step is performed in the presence of a photocatalyst.
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