Fluorescence and Phosphorescence of Carbon Quantum Dots from Wood Ash

Abstract

The synthesis of fluorescent carbon quantum dots (CQDs) has been developed by the Centrifugation of Burned wood ash sample which was considered as carbon source in the presence of distilled water. The concentration of wood ash was 10mg in 50ml of distilled water. Carbon quantum dots have not shown quality result of photo luminescence with distilled water under UV radiation, later which was used as control or reference. With the use of additives like amino acids and polymers, the carbon quantum dots showed better result of photoluminescence and phosphorescence under UV radiation. FESEM analysis revealed the size of carbon quantum dots which were around 10-12 nm in size. The excitation and emission spectrum was seen in the Spectrofluorimetry and it also showed 2θ values upon XRD analysis. These carbon quantum dots have excellent properties and are biocompatible in nature. More study and analysis can be done to get excellent results.