Abstract
Improving heteroatomic interactions via alloying or forming heterogeneous catalysts is of significance to the advancement towards electrocatalytic activity and stability. In this work, a class of trimetallic composition‐controlled PtPbRu nanoparticles is synthesized as the substitutes for precious Pt catalyst via utilizing the metal interfacial diffusion driven effect during high-temperature. Benefiting from the heteroatomic synergistic effect and the well-known Watanabe-Motoo bifunctional mechanism, the as-prepared trimetallic PtPbRu alloy exhibit composition-dependent activity and stability, and when optimized, the fabricated Pt1Pb0.5Ru0.5 trimetallic catalysts exhibit higher methanol oxidation reaction (MOR) activity and durability. These performance enhancements mainly attributed that the heteroatomic induced electro-synergistic effect which play a beneficial role in strengthening the rate of dehydrogenation of methanol and facilitating the removal of CO from the Pt sites. Our study truly provides a guidance for future design of functional catalyst in the field of catalysis and energy conversion.
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