In a typical test, different concentrations of inhibitor were introduced into 2.0 mL acetate buffer (pH, 4.0; 0.1 M) containing 90 µg mL -1 nanozymes, 60 µM of TMB, and 1.0 mM hydrogen peroxide. The mixture was incubated for about 5.0 min to complete the oxidation process. Afterward, the absorbance of the oxidation product was calculated at 663 nm. The residual activity of the nanozymes in the presence and the absence of the inhibitor molecules was calculated by dividing the activity of the nanozymes by the activity of control (i.e., activity in the absence of inhibitor).