Synergistic electronic modulation of Fe–Co active centers by MoC@C for enhanced H ₂ O ₂ activation and cascade colorimetric uric acid detection

FeCoO _x /MoC@C nanozyme integrates Fe–Co active centers with a conductive MoC@C framework for electronic regulation, promoting H ₂ O ₂ activation and peroxidase-like catalysis and enabling sensitive cascade colorimetric detection of uric acid.