Method of preparing carbon quantum dots using amino acid s and method for detecting lead

摘要

The present invention relates to a method for producing carbon quantum dots and a method for detecting lead using amino acids as raw materials that exhibit excellent photoluminescence quenching against lead ions by subjecting the amino acids to high temperature and high pressure treatment. Carbon quantum dots using the amino acid of the present invention as a raw material has an amino group and a hydroxy group thiol group, so it is easy to form a complex with lead ions and thus exhibits excellent photoluminescence quenching for lead ions. In addition, the method for producing a carbon quantum dot using the amino acid of the present invention as a raw material is non-toxic, structurally stable, and is not only eco-friendly, but also economical because it uses not only an organic solvent or a reactant in the manufacturing process. In addition, in the present invention, since the lead measurement method uses carbon quantum dots based on amino acids having high photoluminescence and quenching efficiency compared to cationic metal ions such as chromium, manganese, nickel, copper, and iron, the sensitivity of lead concentration measurement is improved. Can be increased.