Fig. 7From: Highly Sensitive Ethanol Chemical Sensor Based on Novel Ag-Doped Mesoporous α–Fe2O3 Prepared by Modified Sol-Gel ProcessCyclic voltammograms measured in 0.1 M PBS (pH 7) at a scan rate 50 mVs− 1 in the presence of 5 mM ethanol on a bare GCE, b mesoporous Fe2O3-modified GCE ,and c mesoporous 1 wt.% Ag/Fe2O3-modified GCEBack to article page