Effect of the spectral properties of TiO2, Cu, TiO2/Cu sputtered films on the bacterial inactivation under low intensity actinic light
作者： O. Baghriche , S. Rtimi , C. Pulgarin , R. Sanjines , J. Kiwi
DOI: 10.1016/J.JPHOTOCHEM.2012.10.011
关键词:
摘要: Bacterial inactivation by TiO2, Cu and TiO2/Cu DC-magnetron sputtered thin films was systematically investigated in the dark under low intensity visible/actinic light. Low actinic light led to a fast 6log10 (complete) bacterial within minute range. The bifunctional composite fastest inactivation. on TiO2 enabled absorption of visible supported film triggered photo-induced IFCT effect from Cu/Cu-ions. Evidence for direct relation between optical obtained diffuse reflection spectroscopy (DRS) kinetics (CFU) is presented. microstructure characterized X-ray fluorescence (XRF) photoelectron (XPS). Tiand Cu-ions solution were followed inductive coupled plasma (ICPS). small amount determined ICPS provide evidence an oligodynamic during Cu-redox changes ratio oxidized C /reduced species XPS time.
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