Synthesis of carbon quantum dots from natural precursors of Vitaseae using bottom-up Methods

In recent years, carbon quantum dots have been considered due to their suitable properties and have found many applications. Optimal properties of carbon quantum dots include low toxicity, long life, good optical properties, high stability and good solubility in water. Different methods and precursors have been introduced for the synthesis of carbon quantum dots. Among these, the use of natural precursors have an important place due to their low price, availability and environmental friendliness. In this study, the natural precursor Vitaseae was used to synthesize carbon quantum dots. There are two general methods of top-down synthesis and bottom-up synthesis for the synthesis of carbon quantum dots. In this study, two bottom-up synthesis methods (pyrolysis and hydrothermal) have been used. The most important advantages of the methods used are the ability to control the size of the product, the ability to mass produce and the ability to better control the chemical structure of synthesized carbon dots. First, the natural precursor of Vitaseae was prepared. Then synthesis was performed using two methods of pyrolysis and hydrothermal. Then the time and temperature required for the synthesis of carbon quantum dots from the Vitaseae precursor was optimized. Finally, the fluorescence intensity of the synthesized carbon quantum dots was measured. According to the obtained results, the carbon dots synthesized from Vitaseae natural precursor by pyrolysis and hydrothermal methods had high fluorescence intensity. Also, the synthesized carbon dots had high stability and good aqueous solubility. The desirable properties of synthesized carbon quantum dots make it possible to use these materials in a variety of biological applications.

کلیدواژه ها:

Carbon nanomaterials ، Green synthesis ، Pyrolysis ، Hydrothermal ، Fluorescent material