In this study, biogenic silver nanoparticles obtained from Murraya koenigii leaf extract were first employed as a prospective colorimetric sensor for the rapid identification of various ions including heavy and transition metallic ions in aqueous solutions. The colorimetric sensor was cost-effective and exhibited good selectivity. Transition and heavy metallic ions like Fe3+, Co2+, Ni2+, Cu2+, Cd2+, Pb2+, and Hg2+ were both qualitatively and quantitatively identified spectrophotometrically by means of the synthesized silver nanoparticles. The possible mechanism responsible for the colorimetric sensing of metal ions was evaluated in our study.
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Ghosh et al. (2024) studied this question.
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