Organothermal Synthesis and Characterization of Nanocrystalline ß‐Indium Sulfide

Uniform nanocrystalline β‐In 2 S 3 powders have been prepared by reacting the reagents at 140°C for 12 h using an organothermal process in nonaqueous solvents. XRD patterns and TEM images showed that the average particle sizes of the powders prepared in toluene and 1,2‐dimethoxyethane (DME) were 8 and 16 nm, respectively. The particle sizes of nanocrystalline β‐In 2 S 3 powders synthesized by the organothermal process can be controlled by choosing different solvents. The specific surface areas of the products obtained in toluene and DME, which were measured by the BET method, were 74.92 and 36.20 m 2 /g, respectively. The products were analyzed by XPS, atomic absorption, and IR. The formation process of the nanocrystalline β‐In 2 S 3 has been discussed.