A sensitive MMP-2 biosensor was constructed based on specific cleavage of peptide.
Pt/Pd/mhCeO2NS was used as nanocarriers and electrocatalysts for the biosensor.
The transduction of peptide cleavage events was combined with the electrocatalysts.
The catalytic capacity of Pt/Pd/mhCeO2NS was optimal to the signal amplification.
The electrochemical analytical performance was significantly improved and enhanced.