Synthesizing sulphides by a temperature gradient method

Metal sulphides were synthesized with a temperature gradient method by using metal and S as starting materials. The relationship among the amount of evaporating sulphur, volume of quartz tube, synthesis temperature and pressure in the quartz tube was studied. The results showed that the maximum amount of evaporating sulphur is 1.15 g in the quartz tube under the experimental conditions, this confirming that the temperature gradient and heating-rate in the synthesis system were controlled. MgS, TiS2, ZrS2 and WS2 were synthesized safely and in large amount: 56.37, 112.00, 155.36 and 247.97 g, respectively.