Development of Amperometric Laccase Biosensor through Immobilizing Enzyme in Magnesium-Containing Mesoporous Silica Sieve (Mg-MCM-41)/Polyvinyl Alcohol Matrix

Figure 4

Current versus the square root of scan rate plots of Mg-MCM-41/PVA/Lac/Au electrode in pH 4.8 acetate buffer solution with 0.05 mM catechol. Inset: CVs of the PVA/Lac/Au electrode in pH 4.8 acetate buffer solution with 0.05 mM catechol at different scan rates from inner to outer: 10, 30, 50, 70, and 90 mV*s⁻¹.