Abstract
AbstractPlatinum nanoparticles (Pt NPs) encapsulated in nitrogen‐doped mesoporous carbons (NMCs) are prepared by direct carbonization of zeolitic imidazolate framework‐8 (ZIF‐8)‐encapsulated Pt NPs, and used as a methanol‐tolerant oxygen reduction electrocatalyst. ZIF‐8 is used as the carbon and nitrogen precursors and as a matrix for Pt NPs. The obtained Pt NP–NMC hybrids are characterized in detail. The results show that the Pt NP–NMC hybrids possess high surface area (1226 m2 g−1), abundant mesopores with narrow pore size distribution (centered at 3.9 nm), nitrogen doping (5.13 at %), and small and well‐dispersed encapsulated Pt NPs (3.7 nm). Furthermore, the prepared Pt NP–NMC catalyst exhibits high electrocatalytic activity, high stability and excellent methanol tolerance in the oxygen reduction reaction.
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