Sulfonic Ion-Exchange Resins as Versatile Tools for the Oxidative Degradation of Chemical and Biological Hazardous Agents.

Stefano Econdi; Alessandro Caselli; Simona Tomaselli; Laura Ragona; Davide Mileto; Matteo Guidotti

doi:10.1002/cssc.71017

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Sulfonic Ion-Exchange Resins as Versatile Tools for the Oxidative Degradation of Chemical and Biological Hazardous Agents.

Stefano Econdi·Alessandro Caselli·Simona Tomaselli·Laura Ragona·Davide Mileto·Matteo Guidotti

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Abstract

Commercial sulfonic styrene-divinylbenzene ion-exchange resins are activated with aqueous H2O2 to generate metal-free decontamination systems that combine strong Brønsted acidity with immobilized oxidizing capability. Among five tested materials, Amberlyst 15 dry showed the best performance in terms of oxidant immobilization capacity and promoting the oxidative degradation of the sulfur mustard simulant (2-chloroethyl)ethyl sulfide, CEES, and the organophosphorus pesticide malathion under very mild conditions. Control experiments with K2CO3-exchanged resin demonstrate that efficient decontamination requires the synergy between surface acidity and peroxide functionality. The activated resins also display rapid biocidal activity, strongly reducing viable Escherichia coli and Staphylococcus aureus and completely suppressing the infectivity of HSV-1 and SARS-CoV-2 within min. These findings identify peroxide-activated sulfonic resins as simple, sustainable, regenerable, and versatile tools for efficient combined hazardous chemical and biological decontamination.

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Oxidation-Reduction Ion Exchange Resins Decontamination Sulfonic Acids Hydrogen Peroxide Mustard Gas chemical hazardous agents decontamination hydrogen peroxide ion‐exchange resins viruses and bacteria Journal Article Research Support, Non-U.S. Gov't

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Stefano Econdi, Alessandro Caselli, Simona Tomaselli, Laura Ragona, Davide Mileto, Matteo Guidotti. 2026-09-14. Sulfonic Ion-Exchange Resins as Versatile Tools for the Oxidative Degradation of Chemical and Biological Hazardous Agents.. https://doi.org/10.1002/cssc.71017

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Journal Article subject Journal Article; Research Support, Non-U.S. Gov't resource Oxidation-Reduction subject

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