Fig. 8From: Highly Sensitive Ethanol Chemical Sensor Based on Novel Ag-Doped Mesoporous α–Fe2O3 Prepared by Modified Sol-Gel ProcessEIS bode plots measured in 0.1 M PBS using bare GCE, α−Fe2O3, and 1%Ag/α−Fe2O3-modified GCEs at 5 mV potential amplitude, 0.0 V vs. Ag/AgCl in a frequency range of 0.1 Hz–100 kHzBack to article page