Abstract
In this study, carbon dots doped with silver and nitrogen (Ag,N-CDs) were synthesized and their application in chemiluminescence (CL) was investigated using the potassium ferricyanide/hydrogen peroxide (K3Fe(CN)6/H2O2) reaction. Theoretical calculations reveal that Ag doping facilitates a lower excitation energy. The experimental conditions influencing the CL reaction were examined and optimized. The resulting Ag,N-CDs-based CL method demonstrated impressive capabilities in detection of Cu(II) within a linear calibration range of 40.0nM-8.0μM, with a commendable detection limit of 3.1nM. In extensive validation experiments, recoveries and relative standard deviations for water, plasma, and tea samples consistently fell within the range of 97.0-103.0% and 1.03-4.19%, respectively. These outcomes underscore that the CL method based Ag,N-CDs is an excellent tool for the detection of Cu(II).
Published Version
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