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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).
