Green synthesis of carbon quantum dots from sumac: characterization and investigation with cyclic voltammetry technique

Abstract

Carbon dots, due to their minimal size, non-toxicity, simple, cheap and easy synthesis; Among the studies on nanostructured materials that have attracted attention in recent years; has become a popular study topic for researchers. In this study, for the first time, Sumac was used as a source of carbon, and carbon dots were obtained by using the hydrothermal synthesis method in a one-pot reaction at 175 ° C for 8 hours without using any chemical reagents. The characterizations of the obtained carbon dots were illuminated by various analytical instruments (High-Resolution Transmission Electron Microscope (HR-TEM), X-ray Diffractometer (XRD), Raman, Photoluminescence, Infrared, and Uv-vis spectrometer). According to the TEM results, the average diameter of carbon dots was found as 10.48 nm. The maximum emission peak of the carbon dots was monitored at 428 nm when excited at 350 nm. In the next step, the electrochemical properties of the carbon dots were examined by cyclic voltammetry technique. According to cyclic voltammetry results, the substance transport on the electrode surface by diffusion controlled.