▎ 摘　　要

An efficient strategy has been explored to immobilize PtNi nanoparticles (NPs) on diamine-alkalized reduced graphene oxide (rGO). By virtue of the alkalization of rGO with diamine, monodispersed PtNi NPs can be facilely anchored on the alkalized rGO, which shows excellent catalytic activity with 100% H-2 selectivity for dehydrogenation of hydrous hydrazine.