Design of atomically precise Au2Pd6 nanoclusters for boosting electrocatalytic hydrogen evolution on MoS2

摘要: Atomically precise nanoclusters (NCs) have been widely used as catalysts in many reactions to investigate the structure–activity relationship due their ultrasmall sizes, well-defined structures and compositions, especially bimetallic NCs can further promote catalytic activity by synergistic effects of heteroatoms. For electrocatalytic hydrogen evolution reaction (HER) catalysts, a common method improve performance is coupling with nano-metal, but origin enhancement still unclear diversity complexity nanometal supported composites. Here, we take MoS2 (a star HER electrocatalyst) an example, report strategy boost give insight into it combining atomically NCs. The crystal structure this new NC determined X-ray crystallography, its composition identified Au2Pd6S4(PPh3)4(C6H4F2S)6 (Au2Pd6 for short). Au2Pd6/MoS2 show significantly improved robust durability compared single component Pd3 or Au2/MoS2 bare MoS2. This attributed appropriate adsorption behavior H atoms on electronic interactions between MoS2, according combination experiment theory. study presents 2D materials such sheds light promotion at atomic level.