MoS2 with different morphologies was prepared by hydrothermal synthesis. The combined techniques of X-ray diffraction, energy dispersive X-ray spectrum, field emission scanning electron microscope, transmission electron microscope, Raman spectra and thermal analysis in air were used for characterization of the as-obtained MoS2. Effects of aging period on the morphology were investigated. The particles grew more spherical with aging period prolonging and flowers were obtained at much longer aging period. (c) 2007 Elsevier B.V. All rights reserved.