Fig. 4

UV-vis diffuse reflectance spectra of TiO2 nanotubes and Pt/TiO2 nanotubes. The Pt deposition current density was 0.5 mA cm−2 and deposition time was 5 min
UV-vis diffuse reflectance spectra of TiO2 nanotubes and Pt/TiO2 nanotubes. The Pt deposition current density was 0.5 mA cm−2 and deposition time was 5 min