Hydrothermal synthesis of nitrogen- and sulfur-co-doped carbon quantum dots from rice straw for fluorescent detection of Hg 2+ in aqueous media

Key Points

• The research aims to develop a sustainable method for synthesizing carbon quantum dots to detect mercury ions in water.
• Hydrothermal synthesis of nitrogen and sulfur co-doped carbon quantum dots from rice straw.
• Fluorescent assays to evaluate selectivity and sensitivity towards Hg2+ in aqueous solutions.
• The synthesized carbon quantum dots demonstrated high fluorescence in the presence of Hg2+.
• The detection method showed high selectivity and sensitivity for mercury ions in water.