Green Synthesis of Nitrogen-Doped Carbon Dots from <i>Pueraria</i> Residues for Use as a Sensitive Fluorescent Probe for Sensing Cr(VI) in Water.

ABSTRACT: In this study, blue fluorescence carbon dots of high quantum yield (42.96%) were successfully synthesized via a one-step hydrothermal method using Pueraria residues as the precursor and urea as the nitrogen source. The preparation process was simple, was environmentally friendly, and did not use toxic chemicals, with the resulting nitrogen-doped Pueraria carbon dots (N-PCDs) exhibiting excellent dispersibility, regular morphology and stable fluorescence performance. Moreover, fluorescence quenching could be induced through electron transfer between N-PCDs and hexavalent chromium (Cr(VI)) in water, which enabled the application of N-PCDs as a fluorescent probe for sensing Cr(VI) in water, with a limit of detection (LOD) and limit of quantitation (LOQ) of 0.078 μM and 0.26 μM,

SUBMITTER: Zheng Z 

PROVIDER: S-EPMC12431478 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature