Journal Of The Electrochemical Society, no.166508, ss.1-9, 2020 (SCI İndekslerine Giren Dergi)
This study presents for the first time the electrocatalytic behaviour of hexanediamine (HDA) monolayer electrografted at glassy
carbon (GC) electrodes that enhanced oxygen reduction reaction (ORR) in aqueous neutral media. HDA modified GC electrodes
gave a higher current density than platinum bare electrodes based on the cyclic voltammograms (CV), although a ∼0.21 V vs. Ag/
AgCl higher onset potential was observed at −0.1 mA cm-2. Electrochemical impedance spectra (EIS) showed that the
electrocatalytic reaction on HDA monolayer film towards dissolved oxygen molecules is controlled by diffusion and charge
transfer processes. From the scan rate studies and the Laviron equation, it was found that the ORR on this modified electrode
proceeded via a fast four-electrons transfer.