▎ 摘　　要

NOVELTY - Sanitizing device (10) comprises a micro-perforated film (12) provided on a first side with an adhesive layer (14) and on a second side, opposite the first side, with at least one photocatalytic layer (16) based on 90-92 wt.% titanium dioxide. USE - The device is useful for purifying and sanitizing air of spaces from germs or microorganisms, e.g. viruses, bacteria, fungi and others in internal spaces e.g. indoor spaces, preferably in photocatalysis process e.g. and polluting species produced by man, where the indoor spaces e.g. application of public transport means (buses, trams, underground, and trains), to the portholes of airliners or ships, cable cars, greenhouses and closed panoramic spaces. ADVANTAGE - The device: used in indoor spaces, preferably beneficial if used in those spaces with high risk of airborne transmission of pathologies caused by poor air exchange and/or high density and passage of people; utilizes antimicrobial function of the titanium dioxide is almost continuous and performs its function even in the presence of people; is possible to eliminate or at least reduce presence of unwanted particles, e.g. viral particles, from spaces in way that lasts over time without preventing access for people; has immeasurably smaller thickness than the area it can cover, which makes it functional in not occupying space useful for normal activities or function of the space in which it is installed; can cover deliberately made to measure for surface on which it is to be applied; has shape and/or area can be quickly adapted by user by removing excess part/parts on spot with sharp object (e.g. pair of scissors); can be applied to suitable surfaces of permanent or semipermanent structures inside space (e.g. walls, panels or glass) or furnishing structures (e.g. furniture or appliances); provides photocatalytic activity can be activated by external light and/or by artificial light inside space, this characteristic makes it less noticeable, if not even invisible, when applied to the surfaces of permanent or semi-permanent structures or furnishings; and is beneficial exploits this surface in order to reach suitable surface of photocatalytic layer to obtain an adequate sanitization, without detracting useful space for boarding and accommodating users; it is possible to gain even in spaces that are poorly lit by sunlight or that are by necessity illuminated by artificial light that does not emit UV, e.g. underground carriages, surgical rooms, school environments, changing rooms, spaces of the food services and hotels industry sector; and utilizes titanium dioxide, that to provides energy conserving effect, allows sanitization efficacy to be maintained over time and it also allows to keep the performance of the sanitizing device active, and possibly even increase it over time. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for producing the sanitizing device. DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of the sanitizing device. Sanitizing device (10) Micro-perforated film (12) Adhesive layer (14) Photocatalytic layer (16) Photocatalytic assembly (18)