Hydrothermal Synthesis and Characterization of Quasi‐1‐D Tungsten Disulfide Nanocrystal

Abstract

Quasi‐1‐D (one‐dimensional) tungsten disulfide (WS2) nanocrystal was synthesized through a two‐step hydrothermal process. Energy dispersive spectroscopy (EDS) identified that the chemical composition of the final product was WS2. The produced nanocrystal was further characterized with X‐ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). The results have shown that most of the products are quasi‐1‐D nanocrystals with the width around 140 nanometers and thickness about 30 nanometers. However, the length of the majority of nanocrystals could reach 1 micron. The selected area electron diffraction (SAED) pattern indicates that the nanocrystal is of a single crystal. N2 adsorption measurement revealed that the BET specific surface area of this sample is 97 m2g−1, which indicates that the as‐prepared product has better catalyzing and friction performance.