We now turn our attention to the electronic structure of the oxidized configurations, aiming to further solidify the picture given by our previous analysis. Using the DFT calculations done to benchmark the MACE-MP-0 model, we computed d-band centers for the 31 oxidized configurations, a well-known descriptor used to predict the binding of simple adsorbate. Figure shows the average d-band center for platinum atoms lying on the surface of the nanoparticle for each configuration. As the oxygen content increases, the d-band center of the Pt atoms shifts to lower energies, indicating weaker binding. As the oxygen ratio surpasses 0.7, the d-band center begins to stabilize, suggesting that the effect of oxygen incorporation on the electronic structure of the outer shell is less pronounced at higher oxygen ratios.