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α-Fe 2 O 3 /MoS 2 /rGO nanocomposites was prepared by a two-step hydrothermal method and characterized by XRD, FESEM, EDS, FTIR, and UV-vis absorption spectroscopy. The results confirmed the formation of α-Fe 2 O 3 /MoS 2 -rGO (10 wt%) nanocomposites were composed of hematite nanoparticles with particle size of 30 nm and MoS 2 /rGO composite nanosheets with maximum sheet thickness of∼10 nm. Upon addition of MoS 2 -rGO (8.0 wt%) nanosheets, the band gap of α-Fe 2 O 3 nanoparticles decreased from 2.3 to 1.7 eV that was accompanied by light absorption enhancement. Owing to synergetic effect between rGO and MoS 2 nanosheets leading to suppression of charge carrier recombination, prolongation of charge carrier lifetime, improvement of the interfacial charge transfer and increase in the number of active sites in α-Fe 2 O 3 nanoparticles, assynthesized α-Fe 2 O 3 /MoS 2 -rGO (10 wt%) nanocomposites nanocomposite showed highly enhanced photocatalytic performance for Rh B degradation under light irradiation so that complete degradation of Rh B organic dye was achieved within 30 min.