Abstract
Tungsten disulfide is an inorganic compound with layer structure. Nanoparticles of WS2 were found to be excellent candidates for reinforcing various polymer materials. However, long storage times in ambient conditions lead to sorption of water molecules and slow oxidation of defect sites. In the present study, the influence of various treatments on the surface composition and reactivity of several kinds of WS2 nanoparticles, were investigated. This study reveals some complex interplay between water and organic moieties desorption and the subsequent oxidation of “nascant” surfaces. Remarkably, simple immersion in HF solution seems to produce the ultimately cleanest surface of these particles.
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