In-situ surface-derivation of AgPdMo/MoS2 nanowires for synergistic hydrogen evolution catalysis in alkaline solution
Metallic sulfides have emerged as highly active, durable, and robust electrocatalysts for electrocatalytic hydrogen evolution reaction (HER) due to their intriguing electronic and catalytic properties. One of important strategies to further enhence HER performance is to building multimetallic nanostructure by tuning electronic state. Here we combine multimetallic structure and metal sulfide, reporting an efficient stratagy for in-situ surface-derivation of molybdenum sulfides nanosheets (MoS2 NSs) on Ag-Pd-Mo alloy nanowires (AgPdMo NWs) to form AgPdMo/MoS2 NWs. The heterostructure incorporates AgPdMo NWs with high conductivity and MoS2 NSs with abundant active sites, which cooperate synergistically in alkaline solution. The as-tuned AgPdMo/MoS2 NWs exhibit Pt-similar electrocatalytic performance on HER, with a small overpotential of 54 mV at a current density of 10 mA cm-2 and a low Tafel slope of 72 mV dec-1. The present work demonstrates a potential stratagy for designing multicomposition heterostructures by in-situ surface-derivation with enhanced performance in water splitting.