Rational Design of Fe1–Co1/NC Diatomic Nanozyme-Based Electronic Tongues: Discriminating Active Substances in Licorice

). The collected absorbance variation data, i.e., the colorimetric fingerprint patterns, are analyzed by linear discriminant analysis, realizing the identification of the seven active substances with 100% accuracy. This work provides insights into the rational design of dual-atom catalysts with nanozyme activities for the discrimination of multiple targets.