fig6

From: Unveiling proton-regulated Mo=O/Mo-O^- centers in reconstructed Ni₂Mo-NiOOH/MoO_x interfaces toward accelerated proton-coupled electron transfer for urea oxidation reaction

Unveiling proton-regulated Mo=O/Mo-O<sup>-</sup> centers in reconstructed Ni<sub>2</sub>Mo-NiOOH/MoO<sub>x</sub> interfaces toward accelerated proton-coupled electron transfer for urea oxidation reaction

Figure 6. Concentration-dependent kinetic analysis of Ni₂Mo-NiOOH/MoO_x and Ni₂Mo/NF catalysts. (A and C) LSV curves of Ni₂Mo-NiOOH/MoO_x and Ni₂Mo/NF at different urea concentrations (0.0125-0.33 M); (B and D) Linear fitting relationships between j_1/2 and urea concentration for Ni₂Mo-NiOOH/MoO_x and Ni₂Mo/NF, respectively, reflecting the concentration dependence toward urea oxidation; (E and G) LSV curves of Ni₂Mo-NiOOH/MoO_x and Ni₂Mo/NF at different KOH concentrations (0.1-1 M); (F and H) Log(j)-Log[KOH] fitting curves for Ni₂Mo-NiOOH/MoO_x and Ni₂Mo/NF, respectively, used to determine the apparent reaction order with respect to OH^- concentration. RHE: Reversible hydrogen electrode; NF: nickel foam; KOH: potassium hydroxide; LSV: linear sweep voltammetry; j_1/2: half-wave current density.