MoS(2) nanotubes loaded with TiO(2) 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(2)/MoS(2)-NTs catalyst, in which the MoS(2) nanotubes were loaded with TiO(2) nanoparticles, have been synthesized via a facile solvothermal and hydrothermal method. The as-prepared TiO(2)/MoS(2)-NTs electrocatalyst demonstrated enhanced electrocatalytic hydrogen evolution performance compared with MoS(2)-NTs. Electrochemical measurements reveal the overpotential and Tafel slope of as-prepared TiO(2)/MoS(2)-NTs are −0.21 V and 42 mV dec(−1). The HER improvement is proposed to be attributed to the increased edge sites results from the interfaces and synergic effect between TiO(2) nanoparticles and MoS(2) nanotubes.