Figure 2
Chronomperometric curves recorded in a solution of pure supporting electrolyte (curve 1), and in a Na 2 S 4 solution before (curve 2) and after (curve 3) acidification. After 60 s, the electrode potential was changed from −400 mV to −1000 mV as indicated. A given region of the curves 1 and 3 is shown magnified in the inset with visible spikes arising from S NPs impacts.