Supported ultrafine NiPt–MoOx nanocomposites as highly efficient catalysts for complete dehydrogenation of hydrazine borane

Abstract

Chemical hydrogen storage materials such as hydrazine borane (HB) have aroused great interest when the tricky hydrogen storage is still a barrier on the way to sustainable hydrogen energy development. Many efforts have been dedicated to the dehydrogenation of HB, but the catalytic performance is still not sufficient enough. Herein, we develop the synthesis of NiPt–MoO_x nanoparticles supported on NH₂ functionalized N doped rGO (NiPt–MoO_x/NH₂–N-rGO) via a green and facile method. Unexpectedly, the supported Ni_0.9Pt_0.1–MoO_x ultrafine nanoparticles (UPs, ∼1.5 nm) show the highest activity by far with 100% selective conversion and a turnover frequency (TOF) of 4412 h⁻¹ at 323 K.