WiWell® TiO2-photocatalytic adhesive films to reduce microbial charge in indoor microenvironments of public transportation and ensure biosafety in the COVID-19 time

A nanosized TiO₂-Ag nanoparticulate doped photocatalytic adhesive membrane, recently patented as WiWell™ (WippyIdea®), has been used in the indoor environment of public transportation to decrease the airborne microbiome and the microbial charge on handy surfaces, to ensure a safe context to people using and or crowding the place. While the simple cleaning process with chemical sanitizers reached a reduction of indoor microbial contamination as high as 40%, the use of the photocatalytic films lowered the microbial pollution, measured via ATP-bio-luminescence, to values ≥ 94%, ensuring much safer indoor conditions for people travelling. This pilot study, performed on the field, encourages further research to support this patented technology and apply it everywhere.