The Mo3S132-/Bi2WO6 nanocomposites were facilely fabricated by depositing [Mo3S13](2-) clusters onto the hydrothermally prepared Bi2WO6 nanoparticles. This novel Mo3S132-/Bi2WO6 nanocomposite exhibited unprecedented visible light photocatalytic activities. The deposited [Mo3S13](2-) clusters enhanced the photocatalytic activity of Bi2WO6 by promoting the migration of photoinduced charges, which restrained the recombination of photogenerated hole-electron (h(+)/e(-)) pairs on the surface of Bi2WO6. Furthermore, the high photocatalytic stability and recyclability of Mo3S132-/Bi2WO6 nanocomposite enable it to be a promising candidate for the environmental remediation especially in wastewater treatment. In all, [Mo3S13](2-) clusters with advantages of low cost and earth-abundance are great potential as co-catalyst for photocatalysts. (C) 2016 Elsevier B.V. All rights reserved.