Fig. 3: Thiophene adsorption on MoS2-edges.
From: Site-dependent reactivity of MoS2 nanoparticles in hydrodesulfurization of thiophene
a Atom-resolved STM image of a r-MoS2 nanoparticle (Mo-6S edges), which was subsequently reacted with thiophene gas at room temperature (300 K). The superimposed arrows indicate the locations attributed to adsorbed thiophene. STM parameters: Vt=−0.22 V, It=−0.40 nA. Scale bar is 1 nm. b Statistical plot showing the variation of the VS fraction for each edge site position (M, A, and C) obtained by counting S vacancies in atom-resolved STM images, compiled from images with 4,5 and 6S atom positions on the Mo-edge. The data reflect a temperature series for the H2 activated sample (black bins), and where thiophene is dosed at 300 K (green), 400 K (yellow), and 650 K (blue), respectively. The orange bins show the restored VS vacancy distribution after post-reacting the thiophene-exposed sample in H2 at 673 K. A statistical breakdown for each edge length is provided in Supplementary Fig. 2. Error bars reflect the statistical uncertainty based on the standard error.
