A Simple and Rapid Colorimetric Sensor Based on Plasmonic Response Quenching of Phyto-synthesized Silver/Silver Chloride Nanoparticles for Determination of Fe3+ Ions
Paper ID : 1546-ICNS
Authors:
Atefeh Ebrahimi *
Department of Chemistry, faculty of Sciences, University of Hormozgan, Bandar Abbas
Abstract:
We report here a facile colorimetric sensor based on the decolorization of silver/silver chloride nanoparticles (Ag@AgCl NPs) for the detection of Fe3+ ions in aqueous solution. Ag@AgCl NPs were prepared by a green method using aqueous Syzygium cumini fruit extract that acts as a reducing and capping agent as well as halide source The phyto-synthesized Ag@AgCl NPs were characterized by UV-Vis, XRD, and TEM to verify the production, crystallinity, morphology, surface elemental analysis and surface bio-functionalities of the biosynthesized AgNPs. The as-prepared Ag@AgCl NPs, without any modifications, was used as a selective chemical sensor for the determination of Fe3+ ions in an aqueous medium. In the presence of Fe3+ ions, the yellowish solution of Ag@AgCl NPs was found to be colorless in a concentration-dependent manner. The quenching of the SPR peak at 412 nm was used to monitor the Fe3+ ions. This simple sensor has a wide linear range of 10.0-350.0 μM with detection limits of 1.2 μM under the optimized pH. The obtained results suggest the proposed sensor can provide a convenient method of sensing Fe3+ ions in ecosystems prone to industrial pollution.
Keywords:
“Silver/silver chloride nanoparticles”, “Syzygium cumini fruit extract”; “Colorimetric sensor”; “Fe3+ ions”.
Status : Abstract Accepted (Poster Presentation)