Rapid and Efficient Colorimetric Detection of Mercury (II) Ion by Green Synthesized Silver/Silver Chloride Nanoparticles Using Syzygium Cumini L. Skeels Fruit Extract

Document Type : Research Article


Department of Chemistry, Faculty of Sciences, University of Hormozgan, Bandar Abbas, I.R. IRAN


Eco-friendly colorimetric sensors have wide applications in environmental science for simple, convenient, and fast detection of various analytes. In this work, a colorimetric sensor based on unmodified silver/silver chloride nanoparticles (Ag@AgCl NPs) was used for simple and fast detection of mercury (II) (Hg2+) ions. The fruit extract of Syzygium cumini was used as a reducing and capping agent for the biosynthesis of Ag@AgCl NPs. The synthesized nanoparticles were characterized by UV-Vis spectroscopy, Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FESEM), X-Ray Diffraction (XRD), and Fourier-Transform InfraRed (FT-IR) spectroscopy to verify the production, morphology, crystallinity, and surface functionalities of the synthesized Ag@AgCl NPs. The brown-yellow solution of the Ag@AgCl NPs synthesized by fruit extract of S. cumini became colorless in the presence of Hg2+ ions. In this procedure, the calibration curve had two linear range (first range from 1.0 to 5.0 μM with R2=0.9941 and second range from 7.0 to 111.0 μM with R2=0.9905). Also, the selectivity of the green synthesized Ag@AgCl NPs was studied to transition, alkali, and alkaline earth metal ions. The proposed method provides fast, simple, sensitive and selective detection and determination of mercury (II) in water samples.


Main Subjects

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