The Blue–Green Fluorescent Carbon Quantum Dots Synthesized by Chaff for Curcumin Detection
Abstract
The blue–green fluorescent carbon quantum dots (BG-CQDs) were successfully synthesized by one-step hydrothermal method using chaff as the only precursor. It is found that the BG-CQDs showed excellent photostability and emitted strong blue–green fluorescence under the excitation wavelength of 330nm. And this fluorescence could be effectively quenched by curcumin (CM) based on the static quenching mechanism and inner filter effects with a wider linear range of 2.50–40μM and a lower detection limit of 3.53nM. Consequently, a sensitive fluorescence probe of BG-CQDs was designed to detect trace CM in blood and urine samples of healthy adults with satisfactory recoveries in the range of 92.07–111.85%. The research extended the applications of biomass waste, especially in the fields of sensor and biomedical monitoring.
