Hierarchical confinement of PtZn alloy nanoparticles and single-dispersed Zn atoms on COF@MOF-derived carbon towards efficient oxygen reduction reaction

A COF@MOF-derived catalyst has been synthesized for the first time. Pt–Zn intermetallic nanoparticles and atomic Zn distributions were supported on hollow carbons. The catalyst displayed high activity towards the oxygen reduction reaction.