This review aims at providing an overview of the interactions between Pt and supports from experimental and theoretical results, in the hope of correlating the metal–support interactions with the activity and durability of the catalysts in fuel cells.
For the first time, the growth behavior with size-dependent Fe occupancies at different sites of MgFe2O4 was examined. Hybrid catalysts of Pt/MgFe2O4 with a support size of 20.6 nm exhibited an optimal performance of CO oxidation.