Preparation and Characterization of WS_2 Floriated Nano-crystal
Tungstic trioxide sols were obtained from exchanging Na_2WO_4 with proton in cation resin using sol-gel method.The mixture of tungstic trioxide sols and sulfur powder were treated at 650~C for 2 h in high-pressure reactor. The specimen was investigated by scanning electron microscopy(SEM)and X-ray diffraction(XRD),the influence factors and the preparation of nano-crystal flower were preliminarily studied.The results show that the black products are confirmed as WS_2 floriated nano-crystal which is about 5 nm in thickness,and tens in length and width respectively.