Fig. 2: Characterization of the electrochemical performance of the modified electrode.
From: An electrochemical biosensor for the detection of epithelial-mesenchymal transition
a–c Transmission electron microscopy images of AuNPs a, CNT b, and CNT-AuNPs c. Scale bar, 50 nm. d X-ray diffraction profiles of CNT-AuNPs. e Cyclic voltammetry curves of bare GCE, CNT/GCE, and CNT-AuNPs/GCE recorded in 10 mm K3[Fe(CN)6] at a scan rate of 50 mV s−1. f Kinetic analysis of CNT-AuNPs/GCE at scan rates ranging from 10 to 100 mV s−1 indicating that reaction of the modified electrode is a diffusion-controlled surface reaction. g Linear fits of the oxidized peak current (Ipa) and reduced peak current (Ipc) versus the square root of the scan rate (v1/2).
