Figure 2: CO2 reduction performance of the bulk MoS2 catalyst in the EMIM-BF4 solution.
From: Robust carbon dioxide reduction on molybdenum disulphide edges
(a) Cyclic voltammetric (CV) curves for bulk MoS2, Ag nanoparticles (Ag NPs) and bulk Ag in CO2 environment. The experiments were performed in 96 mol% water and 4 mol% EMIM-BF4 solution by sweeping applied potential from +1 V to −0.764 V versus RHE. The vertical grey line indicates the low overpotential (~54 mV) for CO2 reduction at bulk MoS2. (b) CO and H2 Faradaic efficiency (FE) at different applied potentials. (c) The current density of CO2 reduction (measured by Chrono-Amperometry) at 0.764 V versus RHE as a function of water mole fraction in EMIM-BF4 electrolyte. The maximum current density was recorded in 96 mol% water - 4 mol% EMIM-BF4 electrolyte (inset). The pH value of the solutions was also monitored (Supplementary Table 1). (d) Chrono-Amperometry results of MoS2 catalyst in different solutions (96, 90 and 0 mol% water) showing negligible loss in current density even after 10 h.
