Novel environmental applications of green tea: sensing and remediation of Ag⁺ in aqueous system.

ABSTRACT: The strong fluorescence of green tea was quenched with Fe³⁺ because of ligand-to-metal charge transfer and subsequent formation of magnetite (Fe₃O₄) nanoparticles (heavy metal effect). Ag⁺ restored the lost fluorescence by confining iron particles (capped with Cl^-) with the formation of AgCl. Thus, toxic Ag was sensed in the aqueous system with a linear detection range of 10^-4 M to 10^-7 M and a detection limit of 4.1 × 10^-9 M. The sensing protocol was applied for natural samples to detect Ag⁺. Gallic acid was found to be the pivotal component in the tea extract used to design a sensing platform. The company of the green tea were also varied and obtained comparable results.

SUBMITTER: Doi A 

PROVIDER: S-EPMC11443412 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature