Recycling Motorcycle Exhaust Soot into Fluorescent Graphene Oxide Quantum Dots for Sensing Ferrocyanide Ions and Bioimaging Cells: A Method for Waste Utilization.

ABSTRACT: Graphene oxide quantum dots (GOQDs) with a high quantum yield (50%) were synthesized using soot collected from a motorcycle (petroleum vehicle) exhaust pipe and applied as sensors for ferrocyanide ([Fe(CN)₆]^4-) ions and as bioimaging agents in a cancer cell line. X-ray photoelectron spectroscopy (XPS) data for the GOQDs revealed a C/O ratio of 2.49, which was close to that of graphene oxide (GO). The synthesized GOQDs exhibited strong blue fluorescence. High sensitivity to detect [Fe(CN)₆]^4- was reported in GOQDs with a detection limit of 0.46 nmol mL^-1, and a strong linear relationship was achieved in the concentration range of 100-1100 μg L^-1. The results demonstrate the utility of GOQDs for detecting [Fe(CN)₆]<

SUBMITTER: Das C 

PROVIDER: S-EPMC12004190 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature