Fig. 2. (a) CVs of 1, CuSO4, and buffer-only solution at a 100 mV s–1 scan rate. (b) Normalized CVs of 0.50 mM 1 at different scan rates in mA cm–2 V–1/2 s1/2. (c) CVs of 1 at different concentrations. (d) Plot of catalytic peak current versus [1]. Conditions: FTO working electrode (S = 0.25 cm2), 0.10 M pH 7.0 phosphate buffer, and 20 °C.
