Highly-Efficient Sulfonated UiO-66(Zr) Optical Fiber for Rapid Detection of Trace Levels of Pb2+

Lead detection for biological environments, aqueous resources, and medicinal compounds, rely mainly on either utilizing bulky lab equipment such as ICP-OES or ready-made sensors, which are based colorimetry with some limitations including selectivity low interference. Remote, rapid efficient of heavy metals in solutions at ppm sub-ppm levels have faced significant challenges that requires novel compounds ability. Here, a UiO-66(Zr) metal-organic framework (MOF) functionalized SO3H group (SO3H-UiO-66(Zr)) is deposited the end-face an optical fiber to detect lead cations (Pb2+) water 25.2, 43.5 64.0 levels. The SO3H-UiO-66(Zr) system provides Fabry–Perot sensor by ions detected rapidly (milliseconds) 25.2 solution reflecting wavelength shifts interference spectrum. proposed removal mechanism adsorption [Pb(OH2)6]2+ due strong affinity between MOF lead. This first work advances multi-purpose fiber-coated functional on-site remote chemical extremely concentrations system.