Electrochemical Biosensor Based on Boron-Doped Diamond Electrodes with Modified Surfaces

Figure 5

Cyclic voltammograms of 0.1 M PBS (pH 2.1) at the as-deposited (hydrogen-terminated) BDD (1), glassy carbon (2), and oxygen-terminated BDD (3) electrodes with (bold line) and without (thin line) the presence of 100 μM oxalic acid. The scan rate was 100 mV s⁻¹.