Fig. 1.

WOC by Co-TDMImP and Co(NO₃)₂. (A) CVs of buffer background (black solid), 1 mM Co-TDMImP in H₂O (red) and in D₂O (blue), and clean buffer using the working electrode removed from 1 mM Co-TDMImP–containing solution after 20 CV scans (black dashed). (A, Inset) Plot of the catalytic current for Co-TDMImP at 1.40 V (Ag/AgCl) vs. [Co-TDMImP]. The red line represents the best linear fit. (B) CVs of 1 mM Co-TDMImP (red trace) and Co(NO₃)₂ (black traces) at concentrations (from top to bottom) of 0.01 mM, 0.05 mM, 0.1 mM, 0.13 mM, 0.17 mM, and 0.2 mM. Other conditions include glassy carbon working electrode, 0.2 M Na–Pi buffer, pH 7, 22 °C, and scan rate 100 mV⋅s⁻¹.