There are no differences at the resonant energies of Ti, O and Fe. Contrary to the spectra from the bulk regions, the surface ones show higher edge-jump values across the Ti L 2,3 absorption edge for both samples (Figure ). This suggests surface Ti-segregation, as we already shown in a previous study dedicated to the effect of Ti doping of hematite photoanodes. The S1 sample exhibits even higher edge jump (Figure ) than S2, related to a stronger Ti surface segregation. Thus, we can conclude that the annealing under Nitrogen atmosphere promotes Ti segregation toward the surface of the Ti-doped hematite photoanodes. Near-Edge X-ray Absorption Fine Structure (NEXAFS) spectroscopy can discriminate fine chemical coordination particularities. Spectral features in the resonant region of the X-ray absorption edges are related to the electronic structure of the probed ion. Figure presents three spectral regions of interest.