Efficient hydrogen evolution activity of 1T-MoS2/Si-doped TiO2 nanotube hybrids

Catalytic hydrogen evolution is promising process used for production of clean fuel hydrogen and attracting many attentions. In this work, the synthesis and hydrogen evolution catalytic activity of MoS2/TiO2 nanotubes and MoS2/Si-doped TiO2 NTs hybrids were studied. The MoS2 in the hybrids exhibited 1T structure with high conductivity and catalytic activity for hydrogen evolution reaction. MoS2 decoration provided high light absorbance for the hybrids and highly efficient interface-induced effect between the nanotubes and MoS2. Thus, the hybrids showed photocatalytic and electrocatalytic activities remarkably greater than the nanotubes. Moreover, the Si-doping resulted in the increase in specific surface area and hydrophilicity and so further enhanced the catalytic activity.