Solutions were prepared for copper and sulfur sources for required molarities. Then, solution of copper source wasadded to solution of sulfur source drop wise under sturdystirring condition. The mixed solution was then treated under microwave irradiation (2.45 GHz) at 160 and 320 Wfor 30 and 15 min by a domestic microwave oven. After the treatment of solution, CuS (black ppt) was formed which were collected, these CuS (black ppt) was washed by distilled water and ethanol several times and dried at 600
C in air. Effects of experimental conditions on syn-thesis of CuS are given in Table