Dual-Function Colorimetric Platform for Hg2+ Detection and Cys/Hcy Discrimination Based on the Peroxidase-Like Activity of CuAu Nanozymes

Key Points

• The aim is to develop a colorimetric method to detect Hg2+ and distinguish between cysteine and homocysteine.
• Utilized copper-gold nanoparticles (CuAuNPs) for detection based on peroxidase-like activity.
• Employed colorimetric assays to measure Hg2+ concentration and discriminate between Cys and Hcy.
• Successfully detected Hg2+ with a significant color change at specific concentrations.
• Achieved clear discrimination between cysteine and homocysteine based on the colorimetric response.