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Fig. 5 | Nanoscale Research Letters

Fig. 5

From: Hot-Electron-Activated Peroxidase-Mimicking Activity of Ultrathin Pd Nanozymes

Fig. 5

a Schematic diagram of a sensor for H2O2 detection. b Dose-response curve of different hydrogen peroxide concentration. Experimental conditions: Pd nanozyme (25.2 μg/mL), phosphate buffer (0.1 M, pH 4), and TMB (0.7 mM) visible light illumination (λ ≥ 400 nm, 3 min). Inset: linear calibration plots. c Interference of other impurities on the absorbance of H2O2 colorimetric sensor at 652 nm. Experimental conditions: Pd nanozyme (25.2 μg/mL), phosphate buffer (0.1 M, pH 4), TMB (0.7 mM), visible light illumination (λ ≥ 400 nm, 15 min), and including 50 mM H2O2, 200 mM glucose, Na+, K+, Ca2+, and CO32−, and the inset shows the color changes of reaction solutions

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