This study reports the chemical mechanism of Cu in enhancing
the photocatalytic activity of TiO2 in the Cu-TiO2/GF photocatalyst
system for the disinfection of E. coli in aerosols under visible
light irradiation. The study also aimed to investigate the effect of
humidity on bioaerosol disinfection using the Cu-TiO2/GF photocatalytic
system because humidity plays a vital role in hydroxyl
radical production, which is a crucial factor affecting disinfection
efficiency.