Oxidase-Like Catalytic Performance of Nano-MnO₂ and Its Potential Application for Metal Ions Detection in Water

Figure 2

Oxidase-like activity of nano-MnO₂ for catalyzing the chromogenic reaction of 2,6-DMP in C-PBS buffer at 25°C and pH 3.8. Reaction conditions: Nano-MnO₂ = 0.1 mg·mL⁻¹; 2,6-DMP = 1.0 mmol·L⁻¹. Error bars represent the standard deviation (n = 3).