Hydrogen-Induced Reconstruction of Molybdenum Dioxide on Carbon Supports Triggers Strong Metal-Support Interactions to Enhance Pt Catalyst Stability and Activity

Abstract

Taking advantage of the reconstruction phenomenon of molybdenum dioxide (MoO2) under reducing conditions, the surface of carbon support was uniformly decorated with a layer of amorphous molybdenum oxide clusters (MoOx), onto which Pt nanoparticles were loaded. The strong metal-support interaction (SMSI) between Pt and MoOx modifies the electronic structure and coordination environment of Pt, enhancing both catalytic activity and stability under operational conditions.