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Single-crystalline antimony trisulfide (Sb 2 S 3) nano materials with nano particle and rod-like morphologies were successfully synthesized via hydrothermal method by the reaction of antimony trichloride (SbCl 3) and carbon disulfide with high yield in 24h at 180 °C .The powder X-ray diffraction pattern shows the Sb 2 S 3 crystals belong to the orthorhombic phase with calculated lattice parameters a=1.120nm, b=1.128nm and c=0.383nm.The quantification of energy dispersive X-ray spectrometry analysis peaks give an atomic ratio of 2:3 for Sb:S. Scanning electron microscopy (SEM) images show that diameter of Sb 2 S 3 nano particles is around 80-150nm, and rod-like Sb 2 S 3 possess a diameter around 70-140nm and length up to 3µm, respectively. X-ray powder diffraction, scanning electron microscopy, atomic force microscopy, optical measurements, UV-Vis analyses were used to characterize the products. UV-Vis analysis and emission spectra indicates that band gap of Sb 2 S 3 is around 2.82ev, indicating a considerable blue shift relative to the bulk. The effects of reaction time and reaction temperature on the growth of nano materials with different morphologies were also investigated.

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