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- W2525720457 abstract "Drastic bacterial enhancement was observed when the Ag(3%)-TiO2 nanotubes were modified with FeOx (3%) magnetic oxide. On bare TiO2- nanotubes a reduction of 0.2log10CFU was observed within one hour under simulated low intensity solar light. Under similar conditions, a bacterial reduction of 2.5log10CFU was observed on Ag(3%)TiO2 increasing to 6.0log10CFU on Ag(3%)-TiO2-FeOx(3%) magnetic nanotubes. The bacterial inactivation kinetics is strongly influenced by the addition of FeOx. The fast inactivation induced by the composite catalyst seems to involve an increase in the interfacial charge transfer (IFCT) compared to a 2-oxide composite photocatalyst. Stable recycling of the photocatalyst was observed leading to bacterial oxidation. The unambiguous identification of the radical intermediates: OH-radicals, O-singlet and the valence holes vb(h + ) on the Ag-TiO2-FeOx interface showed that the valence band holes vb(h + ) were the main oxidative intermediates leading to bacterial inactivation. Nanotubes size, crystallinity and bulk composition of magnetite 1% (θ = 51.0°), anatase 5% (θ = 8.9°), goethite 37.3% (θ = 9.0°), silver 1% (θ = 2.7°) was obtained by the Rietveld refinement for the Ag(3%)-TiO2-FeOx(3%) nanotubes. The redox chemistry during bacterial inactivation was determined by X-ray photoelectron spectroscopy (XPS)." @default.
- W2525720457 created "2016-10-07" @default.
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- W2525720457 date "2017-03-01" @default.
- W2525720457 modified "2023-10-12" @default.
- W2525720457 title "FeOx magnetization enhancing E. coli inactivation by orders of magnitude on Ag-TiO2 nanotubes under sunlight" @default.
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- W2525720457 doi "https://doi.org/10.1016/j.apcatb.2016.09.064" @default.
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