TiO2 nanotubes (TNTs) with nickel sulfide (NiS) co-catalyst were prepared by a simple solvothermal method and characterized by X-ray diffraction,transmission electron microscope,N2-physisorption,UV-vis diffuse reflectance spectroscopy and photoluminescence spectroscopy.Loading NiS nano-clusters can significantly enhance the photocatalytic H2 evolution performance of TNTs.The optimum NiS loading content was found to be 8 wt% and the corresponding hydrogen production rate is ca.7486 μmol/h/g,being about 79 times higher than that of pure TNTs.This enhancement of photocatalytic H2 evolution was attributed to the synergistic effect between NiS and TNTs.