Bandgap determination and charge separation in Ag@TiO2 core shell nanoparticle films

• Published in: Surface and interface analysis Vol. 42; no. 6-7; pp. 835 - 841
• Main Authors: Tunc, Ilknur, Bruns, Michael, Gliemann, Hartmut, Grunze, Michael, Koelsch, Patrick
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.06.2010
• Subjects: bandgap; charge separation; core-shell nanoparticles; photocatalytic activity; TiO2

The photocatalytic activity of TiO2 under sunlight irradiation depends on the bandgap energy. Due to the relatively low solar intensity in the UV region (<10%) and the fact that the bandgap of TiO2 is usually greater than 3 eV (below 400 nm), many attempts have been made to shift the bandgap towa...