Improved HER activity of Ru nanoparticles decorated MoS2 with S defect
Tianzhao Lin, Ruixin Xu, Tingting Bo, Yugao Hu, Yanyu Liu, Wei Zhou
Abstract
Surface modification of 2H molybdenum disulfide (2H-MoS 2 ) has been found to be one of the most effective approaches for improving the catalytic performance in the hydrogen evolution reaction (HER) process. Here, the metal Ruthenium (Ru) nanoparticles (NPs) could realize synergistically structural and electronic modulations of MoS 2 with S-vacancy (SvMoS 2 ). The experiments and first-principles calculations demonstrated S-vacancy could optimize MoS 2 sites for the HER. While Ru NPs loaded on SvMoS 2 (Ru@SvMoS 2 ), the interaction between Ru and SvMoS 2 contribute to improved electrical conductivity of SvMoS 2 . Thus, Ru@SvMoS 2 possess robust electrocatalytic activity with good stability. Furthermore, this study opens a new venue for optimizing electrocatalytic materials with good performance.