Iron detection and remediation with a functionalized porous polymer applied to environmental water samples

Chemical Science
Sumin LeeChristopher J Chang

Abstract

Iron is one of the most abundant elements in the environment and in the human body. As an essential nutrient, iron homeostasis is tightly regulated, and iron dysregulation is implicated in numerous pathologies, including neuro-degenerative diseases, atherosclerosis, and diabetes. Endogenous iron pool concentrations are directly linked to iron ion uptake from environmental sources such as drinking water, providing motivation for developing new technologies for assessing iron(ii) and iron(iii) levels in water. However, conventional methods for measuring aqueous iron pools remain laborious and costly and often require sophisticated equipment and/or additional processing steps to remove the iron ions from the original environmental source. We now report a simplified and accurate chemical platform for capturing and quantifying the iron present in aqueous samples through use of a post-synthetically modified porous aromatic framework (PAF). The ether/thioether-functionalized network polymer, PAF-1-ET, exhibits high selectivity for the uptake of iron(ii) and iron(iii) over other physiologically and environmentally relevant metal ions. Mössbauer spectroscopy, XANES, and EXAFS measurements provide evidence to support iron(iii) coordinati...Continue Reading

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Citations

Apr 17, 2021·Science·Adam A UlianaJeffrey R Long
Mar 19, 2020·Journal of the American Chemical Society·Martin RatschKarl Börjesson
Feb 27, 2020·Chemical Reviews·Yuyang Tian, Guangshan Zhu
Nov 9, 2021·The Journal of Physical Chemistry Letters·Enpeng XiGuangshan Zhu

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