“…The peaks assigned to Mo 3d in Figure 3c verify the +6 oxidation state of Mo in D4H2 and H2. 30,32 The binding energy values at ∼1334.20 and ∼1296.05 eV, depicted in Figure 3d, correspond to Dy 3d 3/2 and Dy 3d 5/2 levels, respectively. The Dy 3d peaks confirm the +3 oxidation state of the Dy dopant.…”