MoS₂@HKUST-1 Flower-Like Nanohybrids for Efficient Hydrogen Evolution Reactions

A novel MoS₂-based flower-like nanohybrid for hydrogen evolution was fabricated through coating the Cu-containing metal-organic framework (HKUST-1) onto MoS₂ nanosheets. It is the first time that MoS₂@HKUST-1 nanohybrids have been reported for the enhanced electrochemical performance of HER. The morphologies and components of the MoS₂@HKUST-1 flower-like nanohybrids were characterized by scanning electron microscopy, X-ray diffraction analysis and Fourier transform infrared spectroscopy. Compared with pure MoS₂, the MoS₂@HKUST-1 hybrids exhibit enhanced performance on hydrogen evolution reaction with an onset potential of −99 mV, a smaller Tafel slope of 69 mV dec⁻¹, and a Faradaic efficiency of nearly 100 %. The MoS₂@HKUST-1 flower-like nanohybrids exhibit excellent stability in acidic media. This design opens new possibilities to effectively synthesize non-noble metal catalysts with high performance for the hydrogen evolution reaction (HER).