Beschreibung:
Here, in this report carbon dots (C-dots) were fabricated by simple pyrolysis approach at 300oC for different time intervals of 1h, 2h and 3h using garlic (Allium Sativum) as carbon source for the decontamination of Rose Bengal (RB) dye. As-synthesized C-dots were characterized using X-ray diffraction (XRD), Fourier transform infrared (FT-IR), UV-visible, High-resolution transmission electron microscopic (HRTEM), Raman, X-ray photoelectron spectroscopy (XPS), Vibrating-sample magnetometry (VSM) techniques and Photoluminescence spectroscopy (PL). The as-synthesized C-dots were almost crystalline, nearly spherical with particle size ranging from 3.03 to 15.95 nm, paramagnetic, biocompatible and non-toxic in nature. The characteristics peaks in Raman spectrum helped in the confirmation of C-dots formation determination of their percentage purity. The reduction in the optical band gap values of the synthesized C-dots were observed with increasing pyrolysis time from 3.64 to 3.02 eV. Also, the synthesized C-dots showed excellent potential to be used as photocatalyst by degrading Rose Bengal dye from 74.47% to 91.12% under UV irradiation with increase in pyrolysis time and thus can be useful for wastewater remediation