Enhanced peroxidase-like activity of palladium–iron bimetallic nanoparticles supported on N-doped mesoporous carbon for colorimetric detection of ascorbic acid and dopamine
Abstract
values of 0.156 mM for TMB and 0.088 mM for OPD. Mechanistic investigations identified hydroxyl radicals (˙OH) as the dominant reactive species driving the oxidation processes. Exploiting its robust and rapid catalytic performance, Fe-Pd@N-MC was further employed to construct a sensitive and selective colorimetric platform for the detection of dopamine and ascorbic acid, achieving limits of detection of 3.44 μM and 2.87 μM, respectively. The practical applicability of this nanozyme-based sensor was demonstrated through the accurate quantification of ascorbic acid in fresh fruit juice samples, highlighting its potential for application in biosensing, food analysis and clinical diagnostics.
Fields of Study & Subjects
Advanced Nanomaterials in Catalysis
Nanocluster Synthesis and Applications
Nanoplatforms for cancer theranostics
Publication details
- Journal / source
- Nanoscale
- Publisher
- Royal Society of Chemistry (RSC)
- Volume
- 18
- Issue
- 18
- Pages
- 9846–9858
- Publication date
- 1 January 2026
- Language
- EN