Figure 4: (A) Full scan XPS profiles of FePc(COOH)4/TiO2 and TiO2. (B) Ti 2p XPS profiles of FePc(COOH)4/TiO2 and TiO2. Fe 2p XPS profiles of (C) FePc(COOH)4 and (D) FePc(COOH)4/TiO2. O 1s XPS profiles of (E) FePc(COOH)4 and (F) FePc(COOH)4/TiO2. N 1s XPS profiles of (G) FePc(COOH)4 and (H) FePc(COOH)4/TiO2.