SINTESIS CARBON NANODOTS SULFUR (C-DOTS SULFUR) DENGAN METODE MICROWAVE

摘要: Synthesis of C-Dots using sulfur materials, urea and citric acid was successfully prepared by microwave methods. synthesized in conditions low (70 W). In each the are time variation different synthesis is 5 minutes, 15 25 35 45 minutes 55 minutes. The results with shows light yellow color shift to dark brown. emission observed UV yellowish green indicates luminiscence. Increasing length lead absorption resulting absorbance spectrum wider lower energy value range gapnya 2.1 eV 1.7 eV. This that effect affect optical properties C-Dots. FTIR transmittance spectra measurement can be structural unit There presence functional groups like OH, CH, CO, C = C, CN SH. Microwave process causing degraded intensity. Simply put, analysis group sulfur, through indicated strongly there a