Preparation of Visible Light-responsive TiO2 Thin Film Photocatalysts by an RF Magnetron Sputtering Deposition Method and Their Photocatalytic Reactivity
Visible light-responsive TiO2 (Vis-TiO2) thin films were
successfully developed by a radio-frequency (RF) magnetron
sputtering deposition method. These Vis-TiO2 thin films exhibited
a declined composition of the O/Ti ratio from the surface
(O/Ti ¼ 2:00) to bottom (O/Ti ¼ 1:93), enabling the absorption
of visible light. Pt-loaded Vis-TiO2 was, thus, found to decompose
water involving methanol or a 0.05M silver nitrate solution
under visible light irradiation.
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