Synthesis of Pt–Ni Alloy Nanoparticles with Gamma Irradiation and Their Electrocatalytic Performances

Abstract

Pt–Ni alloy with highly efficient and durable property might be of great significance for hydrogen evolution reaction (HER). Herein we present an efficient one-pot gamma irradiation method to prepare alloyed PtNi, PtNi3 and Pt3Ni nanoparticles with inter-crossed network structure on a large scale. The electrochemical characterization evidenced that the catalytic activity and durability of Pt3Ni were comparable with those of commercial Pt/C for HER at the current density of 10[Formula: see text][Formula: see text] in 0.5[Formula: see text]M H2SO4. We believed that the convenient and scalable gamma irradiation technique might open a way for large-scale preparation of advanced water splitting catalysts.