How to prepare tungsten disulfide nanoparticles? At present, the flower-shaped WS2 nanoparticles are mainly prepared by hydrothermal method. While this method has the disadvantage of low yield, which is not conducive to mass production. So, some experts have proposed a simple process - high temperature vulcanization method - to prepare flower-shaped WS2 nano particles. The high purity WS2 nano particles are prepared by this method with low cost and high yield, so it is expected to be used in large-scale industrial production.
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Synthesis of Tungsten Disulfide Nanoparticles
The elemental sulfur powder, thiourea and WO3 are mixed in a molar ratio of 10: 10: 1-20: 20: 1 and then fully grinded. The ground powder is compressed into a wafer with diameter of 25-30 mm and thickness of 4-6 mm using a tablet machine under a pressure of 25-35 Mpa; place the pressed wafer into the crucible and push the crucible into the center of the tube furnace; Argon gas is introduced into the tube furnace, and the tube furnace is rapidly heated to 800-850 °C at a rate of 10-12 °C/min, and subjected to constant temperature treatment for 30-60 min to obtain tungsten disulfide nanoparticles.
