Photoelectrochemical Properties of Fe_𝟐O_𝟑 Supported on TiO₂-Based Thin Films Converted from Self-Assembled Hydrogen Titanate Nanotube Powders

Figure 6

SEM surface images of Fe₂O₃ films with various amounts of (a) 25.84 wt%, (b) 65.48 wt%, (c) 71.58 wt%, and (d) 96.07 wt% supported on the H-TiNT/FTO film and finally heat-treated at 500°C for 10 min in air.