Synthesis of Fluorescent Copper Nanoparticles and Ultrasensitive Free Label Detection of Ag+

In recent years, the application of fluorescent copper nanomaterials in environmental detection has attracted much attention. This paper mainly introduces the synthesis of copper nanomaterials and the detection of Ag+. A simple method for the determination of Ag+ in water was established by using fluorescent copper nanoparticles synthesized by using glucose (Glc) as a reducing agent as a fluorescent probe. The experimental mechanism of this experiment is that silver ions can rapidly and effectively quench the fluorescence of Glc-CuNPs. A good linear relationship was observed in the range of Ag+ at 100 mol/L–600 mol/L (R=0.9845); the color is gradually enhanced under visible light and visual colorimetric detection. Moreover, the Glc-CuNP sensor selectively selected Ag+, which was not affected by other metal ions, indicating that Glc-CuNPs had good selectivity for the detection of Ag+. Based on this, Glc-CuNP completes the detection of heavy metal silver ions and has a good application prospect in environmental detection