“…[32] The oxophilic components can facilitate the capture of hydroxyl species, thereby accelerating the Volmer step. Typical OH capturers include oxophilic PGMs (Ru, Ir), [21,54,55] transition metals(Mo, W, Ni), [56,57] metal oxides (MoO 2 , WO 3 , NiO), metal hydro(oxy)oxides (Ni(OH) 2 , Co(OH) 2 , NiOOH), [58][59][60][61] and oxygen-deficient compounds such as ceria. [62,63] The oxophilic values (θ) of common transition metals for realizing OH binding energy can be found from the calculations by Kopp et al, [64] where Mn (θ = 0.4), Fe (θ = 0.4), Co (θ = 0.4), Ru (θ = 0.4), W (θ = 0.8), Mo (θ = 0.6), Ce (θ = 0.9), etc.…”