Rapid and Low-Cost N-Doped Carbon Dots Synthesis Based on Orange Peels for Highly Sensitive Detection of Ferric and Mercury Ions
Abstract
Using orange peels as a biowaste, fluorescent N-CDs were prepared simply and rapidly through a one-step microwave-assisted method and urea as a nitrogen source. The synthesized N-CDs exhibited a high QY value of 47.12% compared to CDs prepared using different methods. Moreover, the N-CDs have good pH and thermal stability. N-CDs exhibited high sensitivity toward Fe(III), Hg(I), and Hg(II) ions with low LOD values of about 0.0555, 0.15379, and 0.02505 μM, respectively. This approach is hopeful for the large-scale formation of N-CDs and could encourage their utilization as fluorescent chemosensors due to their affordability, simplicity, high efficiency, and environmental friendliness.
Fields of Study & Subjects
Carbon and Quantum Dots Applications
Molecular Sensors and Ion Detection
Electrochemical sensors and biosensors
Publication details
- Journal / source
- Chemosensors
- Publisher
- MDPI AG
- Volume
- 14
- Issue
- 5
- Pages
- 112–112
- Publication date
- 9 May 2026
- Language
- EN