▎ 摘　　要

An efficient strategy to downsize metal nanoparticles (NPs) and provide basic sites located nearby for optimizing the catalytic performance of reduced graphene oxide (rGO)-supported metal catalysts has been explored, for the first time, by potent alkalization of rGO with diamine. By virtue of the coordination effects between the metal ions and the amine groups ligated to rGO, monodispersed Pd nanoparticles (diameter