Fig. 2From: Bi2Se3 Sensitized TiO2 Nanotube Films for Photogenerated Cathodic Protection of 304 Stainless Steel Under Visible LightSEM images for a pure TiO2, b Bi2Se3/TiO2-0.25, c Bi2Se3/TiO2-0.5 and d Bi2Se3/TiO2-1.0; e EDS spectrum for Bi2Se3/TiO2-0.5 filmsBack to article page