Holey Reduced Graphene Oxide Coupled with an Mo 2 N–Mo 2 C Heterojunction for Efficient Hydrogen Evolution

Abstract An in situ catalytic etching strategy is developed to fabricate holey reduced graphene oxide along with simultaneous coupling with a small‐sized Mo 2 N–Mo 2 C heterojunction (Mo 2 N–Mo 2 C/HGr). The method includes the first immobilization of H 3 PMo 12 O 40 (PMo 12 ) clusters on graphite oxide (GO), followed by calcination in air and NH 3 to form Mo 2 N–Mo 2 C/HGr. PMo 12 not only acts as the Mo heterojunction source, but also provides the Mo species that can in situ catalyze the decomposition of adjacent reduced GO to form HGr, while the released gas (CO) and introduced NH 3 simultaneously react with the Mo species to form an Mo 2 N–Mo 2 C heterojunction on HGr. The hybrid exhibits superior activity…

• NN
  National Natural Science Foundation of China

  Awards: 21571054, 21401048, 21371053, 21631004