▎ 摘　　要

Platinum nanoparticles (Pt NPs) immobilized on a N-doped graphene@Al2O3 hybrid support (Al2O3@CNx) were synthesized and employed for low temperature CO oxidation. The superior catalytic activity was attributed to a strong metal-support interaction between Pt NPs and the N-doped graphene surface which was also confirmed in the direct dehydrogenation reaction.