MoS nanotubes loaded with TiO nanoparticles for enhanced electrocatalytic hydrogen evolution.

Efficient and stable non-precious metal catalysts composed of earth-abundant elements are crucial to the hydrogen evolution reaction (HER) in high-energy conversion efficiency. Herein, TiO/MoS-NTs catalyst, in which the MoS nanotubes were loaded with TiO nanoparticles, have been synthesized a facile solvothermal and hydrothermal method. The as-prepared TiO/MoS-NTs electrocatalyst demonstrated enhanced electrocatalytic hydrogen evolution performance compared with MoS-NTs. Electrochemical measurements reveal the overpotential and Tafel slope of as-prepared TiO/MoS-NTs are -0.21 V and 42 mV dec. The HER improvement is proposed to be attributed to the increased edge sites results from the interfaces and synergic effect between TiO nanoparticles and MoS nanotubes.