Journal of Nanomaterials / 2016 / Article / Fig 4

Research Article

TiO2-CdS Nanocomposites: Effect of CdS Oxidation on the Photocatalytic Activity

Figure 4

Luminescence time-resolved spectra at 77 K. The initial curve is obtained after laser pulse, and the following curves were obtained with different steps, as indicated: (a) undoped TiO2 excited at 337 nm, step of 20 ns; (b) TiO2-0.1CdS excited at 337 nm, step of 20 ns; (c) pure CdS excited at 337 nm, step of 100 ns; (d) TiO2-0.1CdS excited at 410 nm, step of 100 ns; (e) pure CdS excited at 410 nm, step of 100 ns; (f) superposition of the normalized emission spectra obtained immediately after the laser pulse for the TiO2-0.1CdS sample and pure CdS both excited at 410 nm.
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