Figure 4 | Scientific Reports

Figure 4

From: Nanohybrid-based immunosensor prepared for Helicobacter pylori BabA antigen detection through immobilized antibody assembly with @ Pdnano/rGO/PEDOT sensing platform

Figure 4

(A) CV curves of bare Au electrode, PEDOT/Au electrode, rGO/PEDOT/Au electrode, Pdnano/rGO/PEDOT/Au electrode and BabA Ab@ Pdnano/rGO/PEDOT/Au electrode obtained with 5 mM [Fe(CN)6]3−/4− electrolyte containing 0.5 mM sodium phosphate buffer (pH 7.5) at 20 mVs−1. (B) Electrochemical impedance plots (Nyquist plots) of the different electrodes bare Au electrode, PEDOT/Au electrde,  rGO/PEDOT/Au electrode, Pdnano/rGO/PEDOT/Au electrode and BabA Ab@Pdnano/rGO/PEDOT/Au electrode obtained with 5 mM [Fe(CN)6]3−/4− electrolyte containing 0.5 mM sodium phosphate buffer (pH 7.5). The frequency range is between 10 Hz to 100 kHz with amplitude of 5 mV.

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