A AuNPs modified Cu-g-C3N4 nanozyme: Improved peroxidase-like activity for amaranth dual-mode fluorescence-SERS sensors

Key Points

• The research aims to enhance the peroxidase-like activity of a Cu-g-C3N4 nanozyme modified with AuNPs for sensor applications.
• Synthesis of AuNPs and Cu-g-C3N4 composite
• Characterization of the nanozyme
• Evaluation of peroxidase-like activity
• Testing dual-mode fluorescence and SERS sensing capabilities
• Significant enhancement in peroxidase-like activity compared to unmodified Cu-g-C3N4
• Stable performance of the nanozyme under various conditions
• Effective dual-mode detection of amaranth via fluorescence and SERS techniques