Fig. 5. Chronopotentiometric study of FRR on a Cu-wire electrode in a 0.12 M PBS solution at pHinitial = 11.3, with the addition (black) of 0.5 M H3PO4 as titration solution. The following quantities are reported as a function of the electrolysis time: (a) electrochemical conversion; (b) Faradaic efficiency for FRR; (c) isomerisation degree; (d) pH in the cathodic compartment. Conditions: i = −20 mA (j = −5.3 mA cm−2), AMVN membrane separator, room temperature (21 °C).
