In this paper, we report a new g-C3N4/MoS2/TiO2 composite material as a high-performance photocatalyst for H-2 evolution. Without a noble-metal cocatalyst, the g-C3N4/MoS2/TiO2 composite reaches a high H-2 production rate of 125 mu molh(-1) when the content of the g-C3N4/MoS2 cocatalyst is 1.0 wt.% and the content of g-C3N4 in this cocatalyst is 10 wt.%. This unusual photocatalytic activity is attributed to the positive synergetic effect between the MoS2 and g-C3N4 components in this cocatalyst, which serve as an electron collector and a source of active adsorption sites, respectively. (C) 2015 Elsevier Ltd. All rights reserved.