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FTIR spectra (a) of the synthesized photoactive Fe-TiO2 nanoparticles along with the undoped TiO2 sample (0.00FeT) and (b) % difference of the integrated areas, ΔA: 3300 (OH), 2920–2850 (TTIP), 1630 (H2O), and 900–400 (TiO2) cm−1 compared with the 0.00FeT, according to Equation (2).
