Figure 6.

(a) Cyclic voltammetry response of bare glassy carbon electrodes (GCEs) and modified GCEs in 0.4 µM concentration dopamine (DA) containing 0.1 M phosphate-buffered saline (PBS) solution; (b) Cyclic voltammetry response of CeO₂/siloxene-modified GCE electrode at different scan rates in 0.4 µM concentration DA containing 0.1 M PBS; (c) Calibration curve of the anodic and cathodic peak current versus the scan rate of the CeO₂/siloxene-modified electrode; (d) The cyclic voltammetry peak current versus the different amounts of CeO₂/siloxene loading.