The first couple
of peaks (at 0.25 V) showed a reversible procedure that we
assigned to the electrochemical transition
between PB and Prussian White (PW, K2FeII[FeII(CN)6]).
Furthermore, the other couple of peaks (at 0.85 V) were characteristic
of the transformation
of PB and Prussian yellow (PY, FeIII[FeIII(CN)6]) [30].