Synthesis, Purification, and Photocatalytic Evaluation of Nanostructured N 2 dopped Carbogenic Particles

Carbon dots (CDs) have brought in significant attention in material science due to their unique characteristics, such as exceptional biocompatibility, physiochemical stability, low toxicity, and photostability. This work aims to synthesize and purify nitrogen-doped carbon dots in a rapid and economical bottom-up (hydrothermal) method. The synthesized material characterization was carried out by utilizing UV spectroscopy, transmission electron microscopy (TEM), X-ray diffraction (XRD), Zeta sizer, Fourier transform infrared spectroscopy (FTIR), and scanning electron microscopy (SEM). The absorption potential of carbon dots, including dye content, pH, irradiation period, and oxidant concentration, was investigated in batch research. The measurement of parameters related to water quality, including total organic carbon (TOC), biological oxygen demand (BOD), and carbon oxygen demand (COD), was evaluated. Response surface methodology (RSM) was used to enhance operational parameters in wastewater treatment. Additionally, the substrate's (black pumice) reusability was examined for up to fourteen cycles.