MOF derived Mn/CeO2 nanozymes with oxidase-like and ultra-high peroxidase-like activity for TAC detection in food samples

= 0.9776-0.9978), along with high selectivity toward various antioxidants. Notably, the POD-like activity-based sensor demonstrated comparable performance to the standard method in the analysis of food samples, with measured AA recoveries of 101.2 % (100 μM spike) and 97.0 % (700 μM spike). This work provides both a practical analytical platform and a generalizable strategy for high-activity bimetallic nanozyme design.