Abstract
Hydrothermal method has been employed for the synthesis of carbon dots (CDs) nanoparticles at 180 °C. CDs were characterized by powder x-ray diffraction (XRD), FT-IR, electron microscopy, thermo-gravimetric analysis (TGA), UV–visible and fluorescence spectroscopy. XRD results reveal the formation of CDs. Electron microscopic studies show the spherical shape of CDs without apparent aggregation. Optical absorption measurements indicate a direct bandgap of 4.6ev. The electrochemical studies were conducted for the detection of ascorbic acid (A.A.) using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) measurements.
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