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

ABSTRACT: Despite significant advances in nanozyme engineering, achieving high catalytic activity remains a critical challenge. In this work, a series of Mn-doped CeO₂ nanozymes with oxidase (OD)-like and ultra-high peroxidase (POD)-like activity were synthesized by MOF-derived strategy. The strong Mn-Ce interaction, originating from Mn²⁺ coordination in the Ce-MOF precursor, contributes to their superior catalytic performance. The TAC sensors constructed based on the dual enzyme-like activities of Mn_4.68/CeO₂ nanozyme demonstrated exceptional detection performance for antioxidants. Both sensor systems exhibited excellent linear correlations between absorbance and antioxidant concentration (R² = 0.9776-0.9978), along with high selectivity toward

SUBMITTER: Guo Z 

PROVIDER: S-EPMC12301790 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature