Precise Blood Glucose Sensing by Nitrogen-Doped Graphene Quantum Dots for Tight Control of Diabetes

Figure 5

(a) UV–vis absorption spectra and (b) direct calibration plots for the H₂O₂ area utilizing N-GQD peroxidase-like catalytic reaction. (c) UV–vis digestion spectra and (d) coordinate calibration plots for the glucose area utilizing glucose oxidase (GOx) and N-GQDs (inset: dose-response twists for H₂O₂ revelation utilizing N-GQD peroxidase-like catalytic reaction (a) and glucose disclosure utilizing GOx and N-GQDs (c); photographs for colorimetric revelation for H₂O₂ (b) and glucose (d), independently). Test conditions for H₂O₂ and glucose area: 500 mL N-GQDs 320 mg/mL, 200 mL TMB 5 mM, 5 mL GOx 40 mg/mL, and different volumes of H₂O₂ 50 mM or glucose 1 mM in 200 mL H₃PO₄–Na₂HPO₄ 100 mM buffer course of action (pH 3.0) at 35°C. Each point is an ordinary of three dynamic estimations. Bumble bars talk to the commonplace botch decided from three dynamic estimations [47].

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