Fe-doped carbon dots as a fluorescent peroxidase-like nanozyme for a dual-mode assay of ascorbic acid.
Reliable quantification of ascorbic acid (AA) is essential for pharmaceutical quality control. Herein, we report Fe-doped carbon dots (Fe-CDs) as a fluorescent nanozyme for the colorimetric/fluorometric dual-mode quantification of AA. Fe doping endows CDs with intrinsic peroxidase-like activity to catalyze H2O2-mediate...