WO₃ Nanoplates Film: Formation and Photocatalytic Oxidation Studies

Figure 4

Raman spectra of anodic WO₃ nanostructure films anodized in an ethylene glycol containing different NH₄F: (a) 0.1 wt%, (b) 0.5 wt%, and (c) 0.7 wt% at 60 V for 1 h after applying heat treatment of 400°C for 4 h.