S doped Fe single atom as efficient peroxidase-like nanozymes for colorimetric detection of oxytetracycline

Key Points

• The central aim is to evaluate the effectiveness of S doped Fe single atom catalysts in colorimetric detection of oxytetracycline.
• Synthesis of Fe single atom supported on S, N co-doped graphite catalysts
• Characterization of micro- and meso-pores in the catalysts
• Assessment of catalytic properties in peroxidase-like reactions
• Fe1/SCN catalysts show high catalytic activity in POD-like reactions.
• Demonstrated effective colorimetric detection of oxytetracycline.
• Enhanced performance attributed to the presence of sulfur dopants.