Enhanced Performance of Highly Activated Carbon and Surface-Treated Porous Polymers as Physical Adsorbents for Chemical Warfare Agents

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Détails bibliographiques
Auteurs principaux:	Park, Sanghyeon, Hong, Yuseung, Choi, Hyunseo
Format:	Preprint
Publié:	2025
Sujets:	Chemical Physics Materials Science
Accès en ligne:	Acceder al recurso
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author	Park, Sanghyeon Hong, Yuseung Choi, Hyunseo
author_facet	Park, Sanghyeon Hong, Yuseung Choi, Hyunseo
contents	The use of chemical warfare agents (CWAs) in modern warfare cannot be disregarded due to their ease of use and potential for large-scale incapacitation. An effective countermeasure involves the physical adsorption of these agents, preventing their entry through the respiratory tract by non-specific adsorption. In this study, we investigate the physical interaction between potential adsorbents and model gases mimicking CWAs, thereby identifying sufficient conditions for higher physical adsorption performance. Our findings reveal that the physical adsorption capacity is highly sensitive to the surface properties of the adsorbents, with uniform development of micropores, rather than solely high surface area, emerging as a critical factor. Additionally, we identified the potential of porous organic polymers as promising alternatives to conventional activated carbon-based adsorbents. Through a facile introduction of polar sulfone functional groups on the polymer surface, we demonstrated that these polar surface polymers exhibit physical adsorption capabilities for formaldehyde under ambient conditions comparable to high-performance activated carbons. Notably, the superior activated carbon possessed a high BET surface area of 2400 m^2/g and an exceptionally uniform micropore structure with an average pore size of approximately 11 Angstroms. This research paves the way for designing adsorbents with high physical adsorption capacities tailored for CWAs protection, offering a significant advancement in developing next-generation protective materials.
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spellingShingle	Enhanced Performance of Highly Activated Carbon and Surface-Treated Porous Polymers as Physical Adsorbents for Chemical Warfare Agents Park, Sanghyeon Hong, Yuseung Choi, Hyunseo Chemical Physics Materials Science The use of chemical warfare agents (CWAs) in modern warfare cannot be disregarded due to their ease of use and potential for large-scale incapacitation. An effective countermeasure involves the physical adsorption of these agents, preventing their entry through the respiratory tract by non-specific adsorption. In this study, we investigate the physical interaction between potential adsorbents and model gases mimicking CWAs, thereby identifying sufficient conditions for higher physical adsorption performance. Our findings reveal that the physical adsorption capacity is highly sensitive to the surface properties of the adsorbents, with uniform development of micropores, rather than solely high surface area, emerging as a critical factor. Additionally, we identified the potential of porous organic polymers as promising alternatives to conventional activated carbon-based adsorbents. Through a facile introduction of polar sulfone functional groups on the polymer surface, we demonstrated that these polar surface polymers exhibit physical adsorption capabilities for formaldehyde under ambient conditions comparable to high-performance activated carbons. Notably, the superior activated carbon possessed a high BET surface area of 2400 m^2/g and an exceptionally uniform micropore structure with an average pore size of approximately 11 Angstroms. This research paves the way for designing adsorbents with high physical adsorption capacities tailored for CWAs protection, offering a significant advancement in developing next-generation protective materials.
title	Enhanced Performance of Highly Activated Carbon and Surface-Treated Porous Polymers as Physical Adsorbents for Chemical Warfare Agents
topic	Chemical Physics Materials Science
url	https://arxiv.org/abs/2505.08802

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