Xanthan Gum-Mediated Silver Nanoparticles for Ultrasensitive Electrochemical Detection of Hg2+ Ions from Water

An environmentally safe, efficient, and economical microwave-assisted technique was selected for the production of silver nanoparticles (AgNPs). To prepare uniformly disseminated AgNPs, xanthan gum (XG) utilized as both a reducing capping agent. UV–Vis spectroscopy used to characterize formed XG-AgNPs, with absorption band regulated at 414 nm under optimized parameters. Atomic force microscopy reveal size shape XG-AgNPs. The interactions between XG agent AgNPs observed using Fourier transform infrared spectroscopy. XG-AgNPs were placed in glassy carbon electrode Nafion® surfaces then deployed sensors voltammetric evaluation mercury ions (Hg2+) square-wave voltammetry an analytical mode. Required quantities, behavior, electrolyte characteristics, pH, initial potentials, accumulation durations all comprehensively investigated. In addition, electrochemical mechanism oxidation Hg2+ postulated. With exceptional limit detection 0.18 ppb R2 value 0.981, sensors’ measured linear response range 0.0007–0.002 µM Hg2+. evaluations ultimately unaffected by presence many coexisting metal (Cd2+, Pb2+, Cr2O4, Co2+,Cu2+, CuSO4). Spiked water samples tested described approach, recoveries ranging from 97% 100%.