Dynamics of VOCs degradation and bacterial inactivation at the interface of AgxO/Ag/TiO2 prepared by HiPIMS under indoor light

AgxO/Ag/TiO2 photoactive thin films were produced by different modes of magnetron sputtering (namely, DCMS and HiPIMS). The spectral microstructural properties the Ag-AgxO/TiO2 studied Diffuse Reflection Spectroscopy (DRS) X-ray Photoemission (XPS). atomic deposition TiO2 Ag in sputtered film TEM. exhibited fast photocatalytic volatile organic compounds (VOCs) degradation bacterial inactivation under low visible light intensity. Langmuir Hinshelwood model was applied to highlight performance catalyst. oxidative states XPS. Deconvolution Ag3d peak showed presence AgO metallic Ag. It is suggested that mechanism involving VOCs on AgO/Ag/TiO2 catalysts due transfer holes from via heterojunction. electrostatic interaction between both semiconductors allows this charge transfer. In addition, contribution reactive oxygen species (ROS) at interface also examined. Light-induced interfacial (IFCT) leading pollutants oxidation appears require photons’ energy can oxidize even high concentrations. coatings have been for repetitive reuse, showing sustainable activity prepared materials.