458245.fig.003
Figure 3: CVs of Mg-MCM-41/PVA/Lac/Au (A), MCM-41/PVA/Lac/Au (B), and Mg-MCM-41/PVA (C) electrodes in pH 4.8 acetate buffer solution at room temperature in presence of 0.05 mM catechol, respectively (50 mV*s−1).